CVE-2019-12525
An issue was discovered in Squid 3.3.9 through 3.5.28 and 4.x through 4.7.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 24.4%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
An issue was discovered in Squid 3.3.9 through 3.5.28 and 4.x through 4.7. When Squid is configured to use Digest authentication, it parses the header Proxy-Authorization. It searches for certain tokens such as domain, uri, and qop. Squid checks if this token's value starts with a quote and ends with one. If so, it performs a memcpy of its length minus 2. Squid never checks whether the value is just a single quote (which would satisfy its requirements), leading to a memcpy of its length minus 1.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 24.40% probability · 98th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- squid-cache/squid · debian/debian linux · opensuse/leap · fedoraproject/fedora · canonical/ubuntu linux
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.htmlMailing List, Third Party Advisory
- http://www.squid-cache.org/Versions/v4/changesets/Vendor Advisory
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patchPatch, Vendor Advisory
- https://github.com/squid-cache/squid/commits/v4Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/07/msg00018.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
- https://seclists.org/bugtraq/2019/Aug/42Mailing List, Third Party Advisory
- https://usn.ubuntu.com/4065-1/Third Party Advisory
- https://usn.ubuntu.com/4065-2/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4507Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.htmlMailing List, Third Party Advisory
- http://www.squid-cache.org/Versions/v4/changesets/Vendor Advisory
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patchPatch, Vendor Advisory
- https://github.com/squid-cache/squid/commits/v4Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/07/msg00018.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
- https://seclists.org/bugtraq/2019/Aug/42Mailing List, Third Party Advisory
- https://usn.ubuntu.com/4065-1/Third Party Advisory
- https://usn.ubuntu.com/4065-2/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4507Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.