CVE-2016-3947
Heap-based buffer overflow in the Icmp6::Recv function in icmp/Icmp6.cc in the pinger utility in Squid before 3.5.16 and 4.x before 4.0.8 allows remote servers to cause a denial of service
02 Description
Heap-based buffer overflow in the Icmp6::Recv function in icmp/Icmp6.cc in the pinger utility in Squid before 3.5.16 and 4.x before 4.0.8 allows remote servers to cause a denial of service
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 14.62% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 96.4% of scored records. A rank, not a probability.
- NVD base score
- 8.2 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2016-04-07 18:00Z10 YR AGO
- Last updated
- 2024-08-06 00:10Z2 YR AGO
- Reserved
- 2016-04-01
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 377834ab999bff41ca0e17aa1be8b33919fb409ce77e166499b562a5d0ce6341
05 Affected products
06 References
- www.squid-cache.orghttp://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14015.patch
- security.gentoo.orgGLSA-201607-01https://security.gentoo.org/glsa/201607-01
- lists.opensuse.orgSUSE-SU-2016:1996http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
- www.squid-cache.orghttp://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11839.patch
- www.squid-cache.orghttp://www.squid-cache.org/Advisories/SQUID-2016_3.txt
- www.ubuntu.comUSN-2995-1http://www.ubuntu.com/usn/USN-2995-1
- www.squid-cache.orghttp://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10495.patch
- www.securitytracker.com1035457http://www.securitytracker.com/id/1035457
- lists.opensuse.orgopenSUSE-SU-2016:2081http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html
- lists.opensuse.orgSUSE-SU-2016:2089http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
- www.squid-cache.orghttp://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13232.patch
- www.squid-cache.orghttp://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12694.patch
07 Fixed in
Debian 12
- squid Fixed in 4.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- squid Fixed in 4.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- squid Fixed in 4.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- squid3 Fixed in 3.3.8-1ubuntu6.8
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- squid3 Fixed in 3.5.12-1ubuntu7.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.