CVE-2020-11945

Description

An issue was discovered in Squid before 5.0.2. A remote attacker can replay a sniffed Digest Authentication nonce to gain access to resources that are otherwise forbidden. This occurs because the attacker can overflow the nonce reference counter (a short integer). Remote code execution may occur if the pooled token credentials are freed (instead of replayed as valid credentials).

References

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

https://usn.ubuntu.com/4356-1/

https://security.netapp.com/advisory/ntap-20210304-0004/

https://security.gentoo.org/glsa/202005-05

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RV2VZWFJNO3B56IVN56HHKJASG5DYUIX/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H4MWXEZAJSOGRJSS2JCJK4WBSND4IV46/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4FWQRYZJPHAZBLXJ56FPCHJN5X2FP3VA/

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

https://github.com/squid-cache/squid/pull/585

https://github.com/squid-cache/squid/commit/eeebf0f37a72a2de08348e85ae34b02c34e9a811

https://bugzilla.suse.com/show_bug.cgi?id=1170313

http://www.squid-cache.org/Versions/v4/changesets/squid-4-eeebf0f37a72a2de08348e85ae34b02c34e9a811.patch

http://www.openwall.com/lists/oss-security/2020/04/23/2

http://master.squid-cache.org/Versions/v4/changesets/squid-4-eeebf0f37a72a2de08348e85ae34b02c34e9a811.patch

http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3