Critical severity9.8NVD Advisory· Published Apr 23, 2020· Updated Jun 17, 2026
CVE-2020-11945
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).
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
39- Squid/Squiddescription
- osv-coords26 versionspkg:rpm/almalinux/libecappkg:rpm/almalinux/libecap-develpkg:rpm/opensuse/squid&distro=openSUSE%20Tumbleweedpkg:rpm/suse/squid&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP1pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/squid&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/squid&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/squid&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/squid&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/squid3&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/squid3&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/opensuse/squid&distro=openSUSE%20Leap%2015.1
< 1.0.1-2.module_el8.6.0+2741+01592ae8+ 25 more
- (no CPE)range: < 1.0.1-2.module_el8.6.0+2741+01592ae8
- (no CPE)range: < 1.0.1-2.module_el8.6.0+2741+01592ae8
- (no CPE)range: < 4.16-1.5
- (no CPE)range: < 3.5.21-26.23.1
- (no CPE)range: < 3.5.21-26.23.1
- (no CPE)range: < 4.11-5.17.2
- (no CPE)range: < 4.11-4.9.1
- (no CPE)range: < 4.11-4.9.1
- (no CPE)range: < 4.11-5.17.2
- (no CPE)range: < 4.11-5.17.2
- (no CPE)range: < 4.11-5.17.2
- (no CPE)range: < 4.11-5.17.2
- (no CPE)range: < 3.5.21-26.23.1
- (no CPE)range: < 3.5.21-26.23.1
- (no CPE)range: < 3.5.21-26.23.1
- (no CPE)range: < 3.5.21-26.23.1
- (no CPE)range: < 3.5.21-26.23.1
- (no CPE)range: < 3.5.21-26.23.1
- (no CPE)range: < 3.5.21-26.23.1
- (no CPE)range: < 3.5.21-26.23.1
- (no CPE)range: < 3.5.21-26.23.1
- (no CPE)range: < 3.5.21-26.23.1
- (no CPE)range: < 3.5.21-26.23.1
- (no CPE)range: < 3.1.23-8.16.37.12.1
- (no CPE)range: < 3.1.23-8.16.37.12.1
- (no CPE)range: < 4.11-lp151.2.15.2
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*+ 3 more
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
Patches
Vulnerability mechanics
References
15- www.squid-cache.org/Versions/v4/changesets/squid-4-eeebf0f37a72a2de08348e85ae34b02c34e9a811.patchnvdPatchVendor Advisory
- github.com/squid-cache/squid/commit/eeebf0f37a72a2de08348e85ae34b02c34e9a811nvdPatchThird Party Advisory
- github.com/squid-cache/squid/pull/585nvdPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.htmlnvdMailing ListThird Party Advisory
- master.squid-cache.org/Versions/v4/changesets/squid-4-eeebf0f37a72a2de08348e85ae34b02c34e9a811.patchnvdVendor Advisory
- www.openwall.com/lists/oss-security/2020/04/23/2nvdMailing ListThird Party Advisory
- bugzilla.suse.com/show_bug.cginvdIssue TrackingThird Party Advisory
- lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlnvdMailing ListThird Party Advisory
- security.gentoo.org/glsa/202005-05nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20210304-0004/nvdThird Party Advisory
- usn.ubuntu.com/4356-1/nvdThird Party Advisory
- www.debian.org/security/2020/dsa-4682nvdThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4FWQRYZJPHAZBLXJ56FPCHJN5X2FP3VA/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H4MWXEZAJSOGRJSS2JCJK4WBSND4IV46/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RV2VZWFJNO3B56IVN56HHKJASG5DYUIX/nvd
News mentions
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