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CVE-2016-4008

The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.8, when used...

5.9 MediumFix available

The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.8, when used without the ASN1_DECODE_FLAG_STRICT_DER flag, allows remote attackers to cause a denial of service (infinite recursion) via a crafted certificate.

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
None
Integrity
None
Availability
High

Exploit likelihood

29.4%Up 25.6 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 5.9

The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.8, when used without the ASN1_DECODE_FLAG_STRICT_DER flag, allows remote attackers to cause a denial of service (infinite recursion) via a crafted certificate.

Record
CVE-2016-4008
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness
CWE-399
Updated
2026-11-02
CVE List No score

The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.8, when used without the ASN1_DECODE_FLAG_STRICT_DER flag, allows remote attackers to cause a denial of service (infinite recursion) via a crafted certificate.

Record
CVE-2016-4008
Updated
2026-11-02
EUVDEUVD-2016-5015 No score

The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.8, when used without the ASN1_DECODE_FLAG_STRICT_DER flag, allows remote attackers to cause a denial of service (infinite recursion) via a crafted certificate.

Record
EUVD-2016-5015
Updated
2026-11-03
GitHub AdvisoriesGHSA-mr9j-58fj-gv7c 5.9

The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.8, when used...

The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.8, when used without the ASN1_DECODE_FLAG_STRICT_DER flag, allows remote attackers to cause a denial of service (infinite recursion) via a crafted certificate.

Record
GHSA-mr9j-58fj-gv7c
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVBELL-CVE-2016-4008 5.9

CVE-2016-4008 does not affect BellSoft software

Record
BELL-CVE-2016-4008
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSV 5.9

The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.8, when used without the ASN1_DECODE_FLAG_STRICT_DER flag, allows remote attackers to cause a denial of service (infinite recursion) via a crafted certificate.

Record
CVE-2016-4008
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 10 moreShow less
OSVDEBIAN-CVE-2016-4008 5.9

The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.8, when used without the ASN1_DECODE_FLAG_STRICT_DER flag, allows remote attackers to cause a denial of service (infinite recursion) via a crafted certificate.

Record
DEBIAN-CVE-2016-4008
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2016-4008 5.9

The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.8, when used without the ASN1_DECODE_FLAG_STRICT_DER flag, allows remote attackers to cause a denial of service (infinite recursion) via a crafted certificate.

Record
UBUNTU-CVE-2016-4008
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVMGASA-2016-0170 No score

Updated libtasn1 package fixes security vulnerability

Updated libtasn1 packages fix security vulnerability: Pascal Cuoq and Miod Vallat discovered that Libtasn1 incorrectly handled certain malformed DER certificates. A remote attacker could possibly use this issue to cause applications using Libtasn1 to hang, resulting in a denial of service (CVE-2016-4008).

Record
MGASA-2016-0170
Updated
2026-11-02
OSVopenSUSE-SU-2024:10414-1 No score

libtasn1-4.9-1.3 on GA media

These are all security issues fixed in the libtasn1-4.9-1.3 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10414-1
Updated
2026-11-02
OSVSUSE-SU-2016:1600-1 No score

Security update for libtasn1

This update for libtasn1 fixes the following issues:

  • Malformed asn1 definitions could have caused a segmentation fault in the asn1 definition parser (bsc#961491)
  • CVE-2015-3622: Fixed invalid read in octet string decoding (bsc#929414)
  • CVE-2016-4008: Fixed infinite loop while parsing DER certificates (bsc#982779)
Record
SUSE-SU-2016:1600-1
Updated
2026-11-02
OSVSUSE-SU-2016:1601-1 No score

Security update for libtasn1

This update for libtasn1 fixes the following issues:

  • Malformed asn1 definitions could have caused a segmentation fault in the asn1 definition parser (bsc#961491)
  • CVE-2015-3622: Fixed invalid read in octet string decoding (bsc#929414)
  • CVE-2016-4008: Fixed infinite loop while parsing DER certificates (bsc#982779)
Record
SUSE-SU-2016:1601-1
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-2957-1 No score

libtasn1-3, libtasn1-6 vulnerability

Pascal Cuoq and Miod Vallat discovered that Libtasn1 incorrectly handled certain malformed DER certificates. A remote attacker could possibly use this issue to cause applications using Libtasn1 to hang, resulting in a denial of service.

Record
USN-2957-1
Updated
2026-11-02
OSVUSN-2957-2 No score

libtasn1-6 vulnerability

USN-2957-1 fixed a vulnerability in Libtasn1. This update provides the corresponding update for Ubuntu 16.04 LTS.

Original advisory details:

Pascal Cuoq and Miod Vallat discovered that Libtasn1 incorrectly handled certain malformed DER certificates. A remote attacker could possibly use this issue to cause applications using Libtasn1 to hang, resulting in a denial of service.

Record
USN-2957-2
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libtasn1-6
Debian:12
 before 4.8-1
4.8-1
libtasn1-6
Debian:13
 before 4.8-1
4.8-1
libtasn1-6
Debian:14
 before 4.8-1
4.8-1
libtasn1-3
Debian:7
 before 2.13-2+deb7u3, plus listed versions
2.13-22.13-2+deb7u12.13-2+deb7u2
2.13-2+deb7u3
libtasn1-6
Debian:8
 before 4.2-3+deb8u2, plus listed versions
4.2-34.2-3+deb8u1
4.2-3+deb8u2
libtasn1
Mageia:5
 before 4.2-4.1.mga5
4.2-4.1.mga5
libtasn1
SUSE:Linux Enterprise Software Development Kit 11 SP4
From an advisory covering 2 CVEs
 before 1.5-1.34.1
1.5-1.34.1
libtasn1
SUSE:Linux Enterprise Server 11 SP4
From an advisory covering 2 CVEs
 before 1.5-1.34.1
1.5-1.34.1
libtasn1
SUSE:Linux Enterprise Server for SAP Applications 11 SP4
From an advisory covering 2 CVEs
 before 1.5-1.34.1
1.5-1.34.1
libtasn1
SUSE:Linux Enterprise Desktop 12
From an advisory covering 2 CVEs
 before 3.7-11.1
3.7-11.1
Show 10 moreShow less
Affected packages
PackageAffectedFixed
libtasn1
SUSE:Linux Enterprise Desktop 12 SP1
From an advisory covering 2 CVEs
 before 3.7-11.1
3.7-11.1
libtasn1
SUSE:Linux Enterprise Software Development Kit 12
From an advisory covering 2 CVEs
 before 3.7-11.1
3.7-11.1
libtasn1
SUSE:Linux Enterprise Software Development Kit 12 SP1
From an advisory covering 2 CVEs
 before 3.7-11.1
3.7-11.1
libtasn1
SUSE:Linux Enterprise Server 12
From an advisory covering 2 CVEs
 before 3.7-11.1
3.7-11.1
libtasn1
SUSE:Linux Enterprise Server for SAP Applications 12
From an advisory covering 2 CVEs
 before 3.7-11.1
3.7-11.1
libtasn1
SUSE:Linux Enterprise Server 12 SP1
From an advisory covering 2 CVEs
 before 3.7-11.1
3.7-11.1
libtasn1
SUSE:Linux Enterprise Server for SAP Applications 12 SP1
From an advisory covering 2 CVEs
 before 3.7-11.1
3.7-11.1
libtasn1-6
Ubuntu:14.04:LTS
 before 3.4-3ubuntu0.4, plus listed versions
3.3-23.4-23.4-33.4-3ubuntu0.13.4-3ubuntu0.23.4-3ubuntu0.3
3.4-3ubuntu0.4
libtasn1-6
Ubuntu:16.04:LTS
 before 4.7-3ubuntu0.16.04.1, plus listed versions
4.5-24.7-24.7-3
4.7-3ubuntu0.16.04.1
libtasn1
openSUSE:Tumbleweed
From an advisory covering 6 CVEs
 before 4.9-1.3
4.9-1.3

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-2016-4008 is a medium vulnerability (CVSS 5.9) in Gnu Libtasn1, published April 14, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 29.4%, the 98th percentile. Fixed in libtasn1-6 4.8-1.

References

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