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CVE-2016-5421

Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which...

8.1 HighFix available

Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

8.04%Up 5.4 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 8.1

Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.

Record
CVE-2016-5421
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-416
Updated
2026-11-02
CVE List No score

Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.

Record
CVE-2016-5421
Updated
2026-11-02
EUVDEUVD-2016-6366 No score

Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.

Record
EUVD-2016-6366
Updated
2026-11-03
GitHub AdvisoriesGHSA-89f8-gvcm-9g9g 8.1

Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which...

Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.

Record
GHSA-89f8-gvcm-9g9g
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-416
Updated
2026-11-02
OSVALPINE-CVE-2016-5421 8.1

Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.

Record
ALPINE-CVE-2016-5421
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVBELL-CVE-2016-5421 8.1

CVE-2016-5421 does not affect BellSoft software

Record
BELL-CVE-2016-5421
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 10 moreShow less
OSV 8.1

Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.

Record
CVE-2016-5421
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2016-5421 8.1

Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.

Record
DEBIAN-CVE-2016-5421
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2018:3558 8.1

Red Hat Security Advisory: httpd24 security, bug fix, and enhancement update

Record
RHSA-2018:3558
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2016-5421 8.1

Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.

Record
UBUNTU-CVE-2016-5421
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVCURL-CVE-2016-5421 No score

use of connection struct after free

libcurl is vulnerable to a use after free flaw.

libcurl works with easy handles using the type 'CURL *' that are objects the application creates using curl_easy_init(). They are the handles that are all each associated with a single transfer at a time. libcurl also has an internal struct that represents and holds most state that is related to a single connection. An easy handle can hold references to one or many such connection structs depending on the requested operations.

When using libcurl's multi interface, an application performs transfers by adding one or more easy handles to the multi handle and then it can drive all those transfers in parallel.

Due to a flaw, libcurl could leave a pointer to a freed connection struct dangling in an easy handle that was previously added to a multi handle when curl_multi_cleanup() is called with an easy handle still added to it. This does not seem to cause any notable harm if the handle is then closed properly.

However, if the easy handle would instead get used again with the easy interface and curl_easy_perform() to do another transfer, it would blindly use the connection struct pointer now pointing to freed memory.

An application could be made to allocate its own fake version of the connect struct, fill in some data and then have the curl_easy_perform() call do something that clearly was not intended by the original code.

For example, this could be an application using a component or library that uses libcurl to do something against fixed URLs or fixed hostnames or with a set of fixed options, but using this flaw the application can then make the component to do something completely different and unintended.

Pseudo code for a bad application

easy = curl_easy_init();
curl_easy_setopt(easy, CURLOPT_URL, "http://example.com/");

// --- start of code to confuse libcurl ---
multi = curl_multi_init();
curl_multi_add_handle(multi, easy);
curl_multi_perform(multi, &still_running);
curl_multi_cleanup(multi);

// --- attack code
allocate_fake_connection_struct()
fill_in_fake_connection_struct()

// ---- end of confusion code

// now this is called, it does not use example.com at all even if the
// option above asks for it...

curl_easy_perform(easy);

This flaw can also be exploited using libcurl bindings in other languages.

Record
CURL-CVE-2016-5421
Updated
2026-11-02
OSVMGASA-2016-0285 No score

Updated curl packages fix security vulnerability

libcurl before 7.50.1 would attempt to resume a TLS session even if the client certificate had changed. That is unacceptable since a server by specification is allowed to skip the client certificate check on resume, and may instead use the old identity which was established by the previous certificate (or no certificate) (CVE-2016-5419).

In libcurl before 7.50.1, when using a client certificate for a connection that was then put into the connection pool, that connection could then wrongly get reused in a subsequent request to that same server. This mistakenly using the wrong connection could lead to applications sending requests to the wrong realms of the server using authentication that it wasn't supposed to have for those operations (CVE-2016-5420).

libcurl before 7.50.1 is vulnerable to a use-after-free flaw in curl_easy_perform() (CVE-2016-5421).

Record
MGASA-2016-0285
Updated
2026-11-02
OSVSUSE-SU-2016:2330-1 No score

Security update for curl

This update for curl fixes the following issues:

Security issues fixed:

  • CVE-2016-5419: TLS session resumption client cert bypass (bsc#991389)
  • CVE-2016-5420: Re-using connections with wrong client cert (bsc#991390)
  • CVE-2016-5421: use of connection struct after free (bsc#991391)
  • CVE-2016-7141: Fixed incorrect reuse of client certificates with NSS (bsc#997420)

Also the following bug was fixed:

  • fixing a performance issue (bsc#991746)
Record
SUSE-SU-2016:2330-1
Updated
2026-11-02
OSVSUSE-SU-2017:2699-1 No score

Security update for SLES 12 Docker image

The SUSE Linux Enterprise Server 12 container image has been updated to include security and stability fixes.

The following issues related to building of the container images have been fixed:

  • Included krb5 package to avoid the inclusion of krb5-mini which gets selected as a dependency by the Build Service solver. (bsc#1056193)
  • Do not install recommended packages when building container images. (bsc#975726)

A number of security issues that have been already fixed by updates released for SUSE Linux Enterprise Server 12 are now included in the base image. A package/CVE cross-reference is available below.

pam:

  • CVE-2015-3238

libtasn1:

  • CVE-2015-3622
  • CVE-2016-4008

libidn:

  • CVE-2015-2059
  • CVE-2015-8948
  • CVE-2016-6261
  • CVE-2016-6262
  • CVE-2016-6263

zlib:

  • CVE-2016-9840
  • CVE-2016-9841
  • CVE-2016-9842
  • CVE-2016-9843

curl:

  • CVE-2016-5419
  • CVE-2016-5420
  • CVE-2016-5421
  • CVE-2016-7141
  • CVE-2016-7167
  • CVE-2016-8615
  • CVE-2016-8616
  • CVE-2016-8617
  • CVE-2016-8618
  • CVE-2016-8619
  • CVE-2016-8620
  • CVE-2016-8621
  • CVE-2016-8622
  • CVE-2016-8623
  • CVE-2016-8624
  • CVE-2016-9586
  • CVE-2017-1000100
  • CVE-2017-1000101
  • CVE-2017-7407

openssl:

  • CVE-2016-2105
  • CVE-2016-2106
  • CVE-2016-2107
  • CVE-2016-2108
  • CVE-2016-2109
  • CVE-2016-2177
  • CVE-2016-2178
  • CVE-2016-2179
  • CVE-2016-2180
  • CVE-2016-2181
  • CVE-2016-2182
  • CVE-2016-2183
  • CVE-2016-6302
  • CVE-2016-6303
  • CVE-2016-6304
  • CVE-2016-6306

libxml2:

  • CVE-2014-0191
  • CVE-2015-8806
  • CVE-2016-1762
  • CVE-2016-1833
  • CVE-2016-1834
  • CVE-2016-1835
  • CVE-2016-1837
  • CVE-2016-1838
  • CVE-2016-1839
  • CVE-2016-1840
  • CVE-2016-2073
  • CVE-2016-3627
  • CVE-2016-3705
  • CVE-2016-4447
  • CVE-2016-4448
  • CVE-2016-4449
  • CVE-2016-4483
  • CVE-2016-4658
  • CVE-2016-9318
  • CVE-2016-9597
  • CVE-2017-9047
  • CVE-2017-9048
  • CVE-2017-9049
  • CVE-2017-9050

util-linux:

  • CVE-2015-5218
  • CVE-2016-5011
  • CVE-2017-2616

cracklib:

  • CVE-2016-6318

systemd:

  • CVE-2014-9770
  • CVE-2015-8842
  • CVE-2016-7796

pcre:

  • CVE-2014-8964
  • CVE-2015-2325
  • CVE-2015-2327
  • CVE-2015-2328
  • CVE-2015-3210
  • CVE-2015-3217
  • CVE-2015-5073
  • CVE-2015-8380
  • CVE-2015-8381
  • CVE-2015-8382
  • CVE-2015-8383
  • CVE-2015-8384
  • CVE-2015-8385
  • CVE-2015-8386
  • CVE-2015-8387
  • CVE-2015-8388
  • CVE-2015-8389
  • CVE-2015-8390
  • CVE-2015-8391
  • CVE-2015-8392
  • CVE-2015-8393
  • CVE-2015-8394
  • CVE-2015-8395
  • CVE-2016-1283
  • CVE-2016-3191

appamor:

  • CVE-2017-6507

bash:

  • CVE-2014-6277
  • CVE-2014-6278
  • CVE-2016-0634
  • CVE-2016-7543

cpio:

  • CVE-2016-2037

glibc:

  • CVE-2016-1234
  • CVE-2016-3075
  • CVE-2016-3706
  • CVE-2016-4429
  • CVE-2017-1000366

perl:

  • CVE-2015-8853
  • CVE-2016-1238
  • CVE-2016-2381
  • CVE-2016-6185

libssh2_org:

  • CVE-2016-0787

expat:

  • CVE-2012-6702
  • CVE-2015-1283
  • CVE-2016-0718
  • CVE-2016-5300
  • CVE-2016-9063
  • CVE-2017-9233

ncurses:

  • CVE-2017-10684
  • CVE-2017-10685
  • CVE-2017-11112
  • CVE-2017-11113

libksba:

  • CVE-2016-4574
  • CVE-2016-4579

libgcrypt:

  • CVE-2015-7511
  • CVE-2016-6313
  • CVE-2017-7526

dbus-1:

  • CVE-2014-7824
  • CVE-2015-0245

Finally, the following packages received non-security fixes:

  • augeas
  • bzip2
  • ca-certificates-mozilla
  • coreutils
  • cryptsetup
  • cyrus-sasl
  • dirmngr
  • e2fsprogs
  • findutils
  • gpg2
  • insserv-compat
  • kmod
  • libcap
  • libsolv
  • libzypp
  • openldap2
  • p11-kit
  • permissions
  • procps
  • rpm
  • sed
  • shadow
  • zypper
Record
SUSE-SU-2017:2699-1
Updated
2026-11-02
OSVSUSE-SU-2017:2700-1 No score

Security update for SLES 12-SP1 Docker image

The SUSE Linux Enterprise Server 12 SP1 container image has been updated to include security and stability fixes.

The following issues related to building of the container images have been fixed:

  • Included krb5 package to avoid the inclusion of krb5-mini which gets selected as a dependency by the Build Service solver. (bsc#1056193)
  • Do not install recommended packages when building container images. (bsc#975726)

A number of security issues that have been already fixed by updates released for SUSE Linux Enterprise Server 12 SP1 are now included in the base image. A package/CVE cross-reference is available below.

pam:

  • CVE-2015-3238

libtasn1:

  • CVE-2015-3622
  • CVE-2016-4008

expat:

expat:

  • CVE-2012-6702
  • CVE-2015-1283
  • CVE-2016-0718
  • CVE-2016-5300
  • CVE-2016-9063
  • CVE-2017-9233

libidn:

  • CVE-2015-2059
  • CVE-2015-8948
  • CVE-2016-6261
  • CVE-2016-6262
  • CVE-2016-6263

zlib:

  • CVE-2016-9840
  • CVE-2016-9841
  • CVE-2016-9842
  • CVE-2016-9843

curl:

  • CVE-2016-5419
  • CVE-2016-5420
  • CVE-2016-5421
  • CVE-2016-7141
  • CVE-2016-7167
  • CVE-2016-8615
  • CVE-2016-8616
  • CVE-2016-8617
  • CVE-2016-8618
  • CVE-2016-8619
  • CVE-2016-8620
  • CVE-2016-8621
  • CVE-2016-8622
  • CVE-2016-8623
  • CVE-2016-8624
  • CVE-2016-9586
  • CVE-2017-1000100
  • CVE-2017-1000101
  • CVE-2017-7407

openssl:

  • CVE-2016-2105
  • CVE-2016-2106
  • CVE-2016-2107
  • CVE-2016-2108
  • CVE-2016-2109
  • CVE-2016-2177
  • CVE-2016-2178
  • CVE-2016-2179
  • CVE-2016-2180
  • CVE-2016-2181
  • CVE-2016-2182
  • CVE-2016-2183
  • CVE-2016-6302
  • CVE-2016-6303
  • CVE-2016-6304
  • CVE-2016-6306
  • CVE-2016-7056
  • CVE-2016-8610
  • CVE-2017-3731

cracklib:

  • CVE-2016-6318

pcre:

  • CVE-2014-8964
  • CVE-2015-2325
  • CVE-2015-2327
  • CVE-2015-2328
  • CVE-2015-3210
  • CVE-2015-3217
  • CVE-2015-5073
  • CVE-2015-8380
  • CVE-2015-8381
  • CVE-2015-8382
  • CVE-2015-8383
  • CVE-2015-8384
  • CVE-2015-8385
  • CVE-2015-8386
  • CVE-2015-8387
  • CVE-2015-8388
  • CVE-2015-8389
  • CVE-2015-8390
  • CVE-2015-8391
  • CVE-2015-8392
  • CVE-2015-8393
  • CVE-2015-8394
  • CVE-2015-8395
  • CVE-2016-1283
  • CVE-2016-3191

appamor:

  • CVE-2017-6507

bash:

  • CVE-2014-6277
  • CVE-2014-6278
  • CVE-2016-0634
  • CVE-2016-7543

cpio:

  • CVE-2016-2037

glibc:

  • CVE-2016-1234
  • CVE-2016-3075
  • CVE-2016-3706
  • CVE-2016-4429
  • CVE-2017-1000366

perl:

  • CVE-2015-8853
  • CVE-2016-1238
  • CVE-2016-2381
  • CVE-2016-6185

libssh2_org:

  • CVE-2016-0787

util-linux:

  • CVE-2016-5011
  • CVE-2017-2616

ncurses:

  • CVE-2017-10684
  • CVE-2017-10685
  • CVE-2017-11112
  • CVE-2017-11113

libksba:

  • CVE-2016-4574
  • CVE-2016-4579

libxml2:

  • CVE-2014-0191
  • CVE-2015-8806
  • CVE-2016-1762
  • CVE-2016-1833
  • CVE-2016-1834
  • CVE-2016-1835
  • CVE-2016-1837
  • CVE-2016-1838
  • CVE-2016-1839
  • CVE-2016-1840
  • CVE-2016-2073
  • CVE-2016-3627
  • CVE-2016-3705
  • CVE-2016-4447
  • CVE-2016-4448
  • CVE-2016-4449
  • CVE-2016-4483
  • CVE-2016-4658
  • CVE-2016-9318
  • CVE-2016-9597
  • CVE-2017-9047
  • CVE-2017-9048
  • CVE-2017-9049
  • CVE-2017-9050

libgcrypt:

  • CVE-2015-7511
  • CVE-2016-6313
  • CVE-2017-7526

update-alternatives:

  • CVE-2015-0860

systemd:

  • CVE-2014-9770
  • CVE-2015-8842
  • CVE-2016-7796

dbus-1:

  • CVE-2014-7824
  • CVE-2015-0245

Finally, the following packages received non-security fixes:

  • augeas
  • bzip2
  • ca-certificates-mozilla
  • coreutils
  • cryptsetup
  • cyrus-sasl
  • dirmngr
  • e2fsprogs
  • findutils
  • gpg2
  • insserv-compat
  • kmod
  • libcap
  • libsolv
  • libzypp
  • lua51
  • lvm2
  • netcfg
  • p11-kit
  • permissions
  • procps
  • rpm
  • sed
  • sg3_utils
  • shadow
  • zypper
Record
SUSE-SU-2017:2700-1
Updated
2026-11-02
OSVUSN-3048-1 No score

curl vulnerabilities

Bru Rom discovered that curl incorrectly handled client certificates when resuming a TLS session. (CVE-2016-5419)

It was discovered that curl incorrectly handled client certificates when reusing TLS connections. (CVE-2016-5420)

Marcelo Echeverria and Fernando Muñoz discovered that curl incorrectly reused a connection struct, contrary to expectations. This issue only applied to Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-5421)

Record
USN-3048-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
curl
Alpine:v3.10
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.11
 before 7.50.1
7.50.1
curl
Alpine:v3.12
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.13
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.14
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.15
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.16
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.17
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.18
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.19
 before 7.50.1-r0
7.50.1-r0
Show 61 moreShow less
Affected packages
PackageAffectedFixed
curl
Alpine:v3.2
 before 7.49.1-r1
7.49.1-r1
curl
Alpine:v3.20
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.21
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.22
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.23
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.24
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.3
 before 7.49.1-r1
7.49.1-r1
curl
Alpine:v3.4
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.5
 before 7.50.1-r0
7.50.1-r0
curl
Alpine:v3.6
 before 7.50.1
7.50.1
curl
Alpine:v3.7
 before 7.50.1
7.50.1
curl
Alpine:v3.8
 before 7.50.1
7.50.1
curl
Alpine:v3.9
 before 7.50.1-r0
7.50.1-r0
curl
Debian:12
 before 7.50.1-1
7.50.1-1
curl
Debian:13
 before 7.50.1-1
7.50.1-1
curl
Debian:14
 before 7.50.1-1
7.50.1-1
curl
Debian:8
From an advisory covering 3 CVEs
 before 7.38.0-4+deb8u4, plus listed versions
7.38.0-47.38.0-4+deb8u17.38.0-4+deb8u27.38.0-4+deb8u3
7.38.0-4+deb8u4
curl
Mageia:5
From an advisory covering 3 CVEs
 before 7.40.0-3.4.mga5
7.40.0-3.4.mga5
httpd24-curl
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:7.61.1-1.el6
0:7.61.1-1.el6
httpd24-curl-debuginfo
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:7.61.1-1.el6
0:7.61.1-1.el6
httpd24-httpd
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el6
0:2.4.34-7.el6
httpd24-httpd-debuginfo
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el6
0:2.4.34-7.el6
httpd24-httpd-devel
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el6
0:2.4.34-7.el6
httpd24-httpd-manual
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el6
0:2.4.34-7.el6
httpd24-httpd-tools
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el6
0:2.4.34-7.el6
httpd24-libcurl
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:7.61.1-1.el6
0:7.61.1-1.el6
httpd24-libcurl-devel
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:7.61.1-1.el6
0:7.61.1-1.el6
httpd24-libnghttp2
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:1.7.1-7.el6
0:1.7.1-7.el6
httpd24-libnghttp2-devel
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:1.7.1-7.el6
0:1.7.1-7.el6
httpd24-mod_ldap
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el6
0:2.4.34-7.el6
httpd24-mod_proxy_html
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 1:2.4.34-7.el6
1:2.4.34-7.el6
httpd24-mod_session
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el6
0:2.4.34-7.el6
httpd24-mod_ssl
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 1:2.4.34-7.el6
1:2.4.34-7.el6
httpd24-nghttp2
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:1.7.1-7.el6
0:1.7.1-7.el6
httpd24-nghttp2-debuginfo
Red Hat:rhel_software_collections:3::el6
From an advisory covering 38 CVEs
 before 0:1.7.1-7.el6
0:1.7.1-7.el6
httpd24-curl
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:7.61.1-1.el7
0:7.61.1-1.el7
httpd24-curl-debuginfo
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:7.61.1-1.el7
0:7.61.1-1.el7
httpd24-httpd
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el7
0:2.4.34-7.el7
httpd24-httpd-debuginfo
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el7
0:2.4.34-7.el7
httpd24-httpd-devel
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el7
0:2.4.34-7.el7
httpd24-httpd-manual
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el7
0:2.4.34-7.el7
httpd24-httpd-tools
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el7
0:2.4.34-7.el7
httpd24-libcurl
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:7.61.1-1.el7
0:7.61.1-1.el7
httpd24-libcurl-devel
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:7.61.1-1.el7
0:7.61.1-1.el7
httpd24-libnghttp2
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:1.7.1-7.el7
0:1.7.1-7.el7
httpd24-libnghttp2-devel
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:1.7.1-7.el7
0:1.7.1-7.el7
httpd24-mod_ldap
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el7
0:2.4.34-7.el7
httpd24-mod_md
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el7
0:2.4.34-7.el7
httpd24-mod_proxy_html
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 1:2.4.34-7.el7
1:2.4.34-7.el7
httpd24-mod_session
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:2.4.34-7.el7
0:2.4.34-7.el7
httpd24-mod_ssl
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 1:2.4.34-7.el7
1:2.4.34-7.el7
httpd24-nghttp2
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:1.7.1-7.el7
0:1.7.1-7.el7
httpd24-nghttp2-debuginfo
Red Hat:rhel_software_collections:3::el7
From an advisory covering 38 CVEs
 before 0:1.7.1-7.el7
0:1.7.1-7.el7
curl
SUSE:Linux Enterprise Desktop 12 SP1
From an advisory covering 4 CVEs
 before 7.37.0-28.1
7.37.0-28.1
curl
SUSE:Linux Enterprise Software Development Kit 12 SP1
From an advisory covering 4 CVEs
 before 7.37.0-28.1
7.37.0-28.1
curl
SUSE:Linux Enterprise Server 12 SP1
From an advisory covering 4 CVEs
 before 7.37.0-28.1
7.37.0-28.1
curl
SUSE:Linux Enterprise Server for SAP Applications 12 SP1
From an advisory covering 4 CVEs
 before 7.37.0-28.1
7.37.0-28.1
curl
Ubuntu:14.04:LTS
 before 7.35.0-1ubuntu2.8, plus listed versions
7.32.0-1ubuntu17.33.0-1ubuntu17.34.0-1ubuntu17.35.0-1ubuntu17.35.0-1ubuntu2
Show 6 moreShow less
7.35.0-1ubuntu2.17.35.0-1ubuntu2.27.35.0-1ubuntu2.37.35.0-1ubuntu2.57.35.0-1ubuntu2.67.35.0-1ubuntu2.7
7.35.0-1ubuntu2.8
curl
Ubuntu:16.04:LTS
 before 7.47.0-1ubuntu2.1, plus listed versions
7.43.0-1ubuntu27.45.0-1ubuntu17.46.0-1ubuntu17.47.0-1ubuntu17.47.0-1ubuntu2
7.47.0-1ubuntu2.1
curl
Ubuntu:14.04:LTS
From an advisory covering 3 CVEs
 before 7.35.0-1ubuntu2.8, plus listed versions
7.32.0-1ubuntu17.33.0-1ubuntu17.34.0-1ubuntu17.35.0-1ubuntu17.35.0-1ubuntu2
Show 6 moreShow less
7.35.0-1ubuntu2.17.35.0-1ubuntu2.27.35.0-1ubuntu2.37.35.0-1ubuntu2.57.35.0-1ubuntu2.67.35.0-1ubuntu2.7
7.35.0-1ubuntu2.8
curl
Ubuntu:16.04:LTS
From an advisory covering 3 CVEs
 before 7.47.0-1ubuntu2.1, plus listed versions
7.43.0-1ubuntu27.45.0-1ubuntu17.46.0-1ubuntu17.47.0-1ubuntu17.47.0-1ubuntu2
7.47.0-1ubuntu2.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-5421 is a high vulnerability (CVSS 8.1) in Haxx Libcurl, published August 3, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 8.04%, the 94th percentile. Fixed in curl 7.50.1-r0.

References

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This page doesn't list everything

Left out here: 175 references. The JSON record has them.

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