Every CVE Search/ Get API key

CVE-2016-2390

The FwdState::connectedToPeer method in FwdState.cc in Squid before 3.5.14 and 4.0.x before 4.0.6...

5.9 MediumFix available

The FwdState::connectedToPeer method in FwdState.cc in Squid before 3.5.14 and 4.0.x before 4.0.6 does not properly handle SSL handshake errors when built with the --with-openssl option, which allows remote attackers to cause a denial of service (application crash) via a plaintext HTTP message.

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

25.6%Up 24.2 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 5.9

The FwdState::connectedToPeer method in FwdState.cc in Squid before 3.5.14 and 4.0.x before 4.0.6 does not properly handle SSL handshake errors when built with the --with-openssl option, which allows remote attackers to cause a denial of service (application crash) via a plaintext HTTP message.

Record
CVE-2016-2390
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-20
Updated
2026-11-02
CVE List No score

The FwdState::connectedToPeer method in FwdState.cc in Squid before 3.5.14 and 4.0.x before 4.0.6 does not properly handle SSL handshake errors when built with the --with-openssl option, which allows remote attackers to cause a denial of service (application crash) via a plaintext HTTP message.

Record
CVE-2016-2390
Updated
2026-11-02
EUVDEUVD-2016-3474 No score

The FwdState::connectedToPeer method in FwdState.cc in Squid before 3.5.14 and 4.0.x before 4.0.6 does not properly handle SSL handshake errors when built with the --with-openssl option, which allows remote attackers to cause a denial of service (application crash) via a plaintext HTTP message.

Record
EUVD-2016-3474
Updated
2026-11-03
GitHub AdvisoriesGHSA-qg6v-rjmq-c5vh 5.9

The FwdState::connectedToPeer method in FwdState.cc in Squid before 3.5.14 and 4.0.x before 4.0.6...

The FwdState::connectedToPeer method in FwdState.cc in Squid before 3.5.14 and 4.0.x before 4.0.6 does not properly handle SSL handshake errors when built with the --with-openssl option, which allows remote attackers to cause a denial of service (application crash) via a plaintext HTTP message.

Record
GHSA-qg6v-rjmq-c5vh
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-20
Updated
2026-11-02
OSV 5.9

The FwdState::connectedToPeer method in FwdState.cc in Squid before 3.5.14 and 4.0.x before 4.0.6 does not properly handle SSL handshake errors when built with the --with-openssl option, which allows remote attackers to cause a denial of service (application crash) via a plaintext HTTP message.

Record
CVE-2016-2390
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
OSVDEBIAN-CVE-2016-2390 5.9

The FwdState::connectedToPeer method in FwdState.cc in Squid before 3.5.14 and 4.0.x before 4.0.6 does not properly handle SSL handshake errors when built with the --with-openssl option, which allows remote attackers to cause a denial of service (application crash) via a plaintext HTTP message.

Record
DEBIAN-CVE-2016-2390
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
OSVSUSE-SU-2016:2089-1 No score

Security update for squid3

This update for squid3 fixes the following issues:

  • Multiple issues in pinger ICMP processing. (CVE-2014-7141, CVE-2014-7142)

  • CVE-2016-3947: Buffer overrun issue in pinger ICMPv6 processing. (bsc#973782)

  • CVE-2016-4554: fix header smuggling issue in HTTP Request processing (bsc#979010)

  • Fix multiple Denial of Service issues in HTTP Response processing. (CVE-2016-2569, CVE-2016-2570, CVE-2016-2571, CVE-2016-2572, bsc#968392, bsc#968393, bsc#968394, bsc#968395)

  • Regression caused by the DoS fixes above (bsc#993299)

  • CVE-2016-3948: Fix denial of service in HTTP Response processing (bsc#973783)

  • CVE-2016-4051: fixes buffer overflow in cachemgr.cgi (bsc#976553)

  • CVE-2016-4052, CVE-2016-4053, CVE-2016-4054:

    • fixes multiple issues in ESI processing (bsc#976556)

  • CVE-2016-4556: fixes double free vulnerability in Esi.cc (bsc#979008)

  • CVE-2015-5400: Improper Protection of Alternate Path (bsc#938715)

  • CVE-2014-6270: fix off-by-one in snmp subsystem (bsc#895773)

  • Memory leak in squid3 when using external_acl (bsc#976708)

Record
SUSE-SU-2016:2089-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
squid
Debian:12
 before 4.1-1
4.1-1
squid
Debian:13
 before 4.1-1
4.1-1
squid
Debian:14
 before 4.1-1
4.1-1
squid3
SUSE:Linux Enterprise Server 11 SP4
From an advisory covering 25 CVEs
 before 3.1.23-8.16.30.1
3.1.23-8.16.30.1
squid3
SUSE:Linux Enterprise Server for SAP Applications 11 SP4
From an advisory covering 25 CVEs
 before 3.1.23-8.16.30.1
3.1.23-8.16.30.1

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-2016-2390 is a medium vulnerability (CVSS 5.9) in Squid-cache Squid, published April 19, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 25.6%, the 97th percentile. Fixed in squid 4.1-1.

References

Show 49 moreShow less
Pages All vulnerabilities Browse Docs Sources Guide Get API key
MoveEnter Open