CVE-2019-18679

Description

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.

References

https://www.debian.org/security/2020/dsa-4682

https://usn.ubuntu.com/4213-1/

https://security.gentoo.org/glsa/202003-34

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/

https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html

https://lists.debian.org/debian-lts-announce/2019/12/msg00011.html

https://github.com/squid-cache/squid/pull/491

https://bugzilla.suse.com/show_bug.cgi?id=1156324

http://www.squid-cache.org/Versions/v4/changesets/squid-4-671ba97abe929156dc4c717ee52ad22fba0f7443.patch

http://www.squid-cache.org/Advisories/SQUID-2019_11.txt

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3