CVE-2020-8517
An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On
02 Description
An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On
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
- 6.84% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 93.9% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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
- 2020-02-04 19:54Z6 YR AGO
- Last updated
- 2024-08-04 10:03Z2 YR AGO
- Reserved
- 2020-02-02
- 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
- 054b51e980ca977fee951daca0e053457c73a274df83754b5a19660f8761450a
05 Affected products
06 References
- www.squid-cache.orghttp://www.squid-cache.org/Advisories/SQUID-2020_3.txt
- www.squid-cache.orghttp://www.squid-cache.org/Versions/v4/changesets/squid-4-6982f1187a26557e582172965e266f544ea562a5.patch
- usn.ubuntu.comUSN-4289-1https://usn.ubuntu.com/4289-1/
- lists.opensuse.orgopenSUSE-SU-2020:0307http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.html
- security.gentoo.orgGLSA-202003-34https://security.gentoo.org/glsa/202003-34
- lists.opensuse.orgopenSUSE-SU-2020:0606http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.html
- lists.opensuse.orgopenSUSE-SU-2020:0623http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.html
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20210304-0002/
07 Fixed in
Debian 12
- squid Fixed in 4.10-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- squid Fixed in 4.10-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- squid Fixed in 4.10-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- squid3 Fixed in 3.5.12-1ubuntu7.10
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- squid3 Fixed in 3.5.27-1ubuntu1.5
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- squid Fixed in 4.9-2ubuntu4
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.