CVE-2019-18679

An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is vulnerable to information disclosure when processing HTTP Digest Authentication. Nonce tokens contain the raw byte value of a pointer that sits within heap memory allocation. This information reduces ASLR protections and may aid attackers isolating memory areas to target for remote code execution attacks.

Score

CVSS 3.1 7.5 High

Status

Modified - cve@mitre.org

Published

2019-11-26

Last modified

2024-08-05

Weaknesses

CWE-200

Affected products

• Ubuntu Linux (Canonical)
• Debian Linux (Debian)
• Fedora (Fedoraproject)
• Squid (Squid-cache)

References

• http://www.squid-cache.org/Advisories/SQUID-2019_11.txt
• http://www.squid-cache.org/Versions/v4/changesets/squid-4-671ba97abe929156dc4c717ee52ad22fba0f7443.patch
• https://bugzilla.suse.com/show_bug.cgi?id=1156324
• https://github.com/squid-cache/squid/pull/491
• https://lists.debian.org/debian-lts-announce/2019/12/msg00011.html
• https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTM74TU2BSLT5B3H4F3UDW…
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEMOYTMCCFWK5NOXSXEIH5…
• https://security.gentoo.org/glsa/202003-34
• https://usn.ubuntu.com/4213-1/
• https://www.debian.org/security/2020/dsa-4682