Critical severity9.8NVD Advisory· Published Nov 26, 2019· Updated Jun 17, 2026
CVE-2019-12526
CVE-2019-12526
Description
An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer. This leads to attacker controlled data overflowing in the heap.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
37- Squid/Squiddescription
- osv-coords24 versionspkg:rpm/opensuse/squid&distro=openSUSE%20Tumbleweedpkg:rpm/almalinux/libecappkg:rpm/almalinux/libecap-develpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP1pkg:rpm/opensuse/squid&distro=openSUSE%20Leap%2015.0pkg:rpm/opensuse/squid&distro=openSUSE%20Leap%2015.1pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-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-BCLpkg: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/squid&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/squid3&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/squid3&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS
< 4.16-1.5+ 23 more
- (no CPE)range: < 4.16-1.5
- (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: < 4.9-5.11.1
- (no CPE)range: < 4.9-4.3.2
- (no CPE)range: < 4.9-5.11.1
- (no CPE)range: < 4.9-lp150.13.1
- (no CPE)range: < 4.9-lp151.2.7.1
- (no CPE)range: < 4.9-4.3.2
- (no CPE)range: < 3.5.21-26.20.1
- (no CPE)range: < 3.5.21-26.20.1
- (no CPE)range: < 3.5.21-26.20.1
- (no CPE)range: < 3.5.21-26.20.1
- (no CPE)range: < 3.5.21-26.20.1
- (no CPE)range: < 3.5.21-26.20.1
- (no CPE)range: < 3.5.21-26.20.1
- (no CPE)range: < 3.5.21-26.20.1
- (no CPE)range: < 3.5.21-26.20.1
- (no CPE)range: < 3.5.21-26.20.1
- (no CPE)range: < 3.5.21-26.20.1
- (no CPE)range: < 3.5.21-26.20.1
- (no CPE)range: < 3.5.21-26.20.1
- (no CPE)range: < 3.1.23-8.16.37.12.1
- (no CPE)range: < 3.1.23-8.16.37.12.1
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
- 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:19.04:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
9- www.squid-cache.org/Advisories/SQUID-2019_7.txtnvdThird Party Advisory
- bugzilla.suse.com/show_bug.cginvdIssue TrackingThird Party Advisory
- lists.debian.org/debian-lts-announce/2019/12/msg00011.htmlnvdMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlnvdMailing ListThird Party Advisory
- security.gentoo.org/glsa/202003-34nvdThird Party Advisory
- usn.ubuntu.com/4213-1/nvdThird Party Advisory
- www.debian.org/security/2020/dsa-4682nvdThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/nvd
News mentions
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