CVE-2020-8517
This leads to the Squid process also terminating and a denial of service for all clients using the proxy.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.85%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 6.85% probability · 94th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-787
- Affected
- squid-cache/squid · opensuse/leap · canonical/ubuntu linux
- Source
- cve@mitre.org
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.