CVEvulnerability
CVE-2020-8517
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-02-04
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-20, CWE-787
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 systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.
Affected configurations
• squid-cache squid (< 4.10)
• opensuse leap 15.1
• canonical ubuntu linux 16.04
• canonical ubuntu linux 18.04
• canonical ubuntu linux 19.10
Related
References
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.html Mailing List, Third Party Advisory
- http://www.squid-cache.org/Advisories/SQUID-2020_3.txt Vendor Advisory
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-6982f1187a26557e582172965e266f544ea562a5.patch Patch, Vendor Advisory
- https://security.gentoo.org/glsa/202003-34 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210304-0002/ Third Party Advisory
- https://usn.ubuntu.com/4289-1/ Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.html Mailing List, Third Party Advisory
- http://www.squid-cache.org/Advisories/SQUID-2020_3.txt Vendor Advisory
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-6982f1187a26557e582172965e266f544ea562a5.patch Patch, Vendor Advisory
- https://security.gentoo.org/glsa/202003-34 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210304-0002/ Third Party Advisory
- https://usn.ubuntu.com/4289-1/ Third Party Advisory