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.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.htmlMailing List, Third Party Advisory
- http://www.squid-cache.org/Advisories/SQUID-2020_3.txtVendor Advisory
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-6982f1187a26557e582172965e266f544ea562a5.patchPatch, Vendor Advisory
- https://security.gentoo.org/glsa/202003-34Third 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.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.htmlMailing List, Third Party Advisory
- http://www.squid-cache.org/Advisories/SQUID-2020_3.txtVendor Advisory
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-6982f1187a26557e582172965e266f544ea562a5.patchPatch, Vendor Advisory
- https://security.gentoo.org/glsa/202003-34Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210304-0002/Third Party Advisory
- https://usn.ubuntu.com/4289-1/Third Party Advisory
Timeline
- Published
- Feb 4, 2020
- Last modified
- Jun 17, 2026
- NVD status
- Modified