Critical severity9.8NVD Advisory· Published Apr 15, 2020· Updated Jun 17, 2026
CVE-2019-12519
CVE-2019-12519
Description
An issue was discovered in Squid through 4.7. When handling the tag esi:when when ESI is enabled, Squid calls ESIExpression::Evaluate. This function uses a fixed stack buffer to hold the expression while it's being evaluated. When processing the expression, it could either evaluate the top of the stack, or add a new member to the stack. When adding a new member, there is no check to ensure that the stack won't overflow.
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Affected products
38- Squid/Squiddescription
- osv-coords26 versionspkg:rpm/opensuse/squid&distro=openSUSE%20Tumbleweedpkg:rpm/suse/squid&distro=SUSE%20Enterprise%20Storage%205pkg: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%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/squid3&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/opensuse/squid&distro=openSUSE%20Leap%2015.1pkg:rpm/suse/squid3&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/almalinux/libecappkg:rpm/almalinux/libecap-devel
< 4.16-1.5+ 25 more
- (no CPE)range: < 4.16-1.5
- (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: < 3.5.21-26.23.1
- (no CPE)range: < 3.1.23-8.16.37.12.1
- (no CPE)range: < 4.11-lp151.2.15.2
- (no CPE)range: < 3.1.23-8.16.37.12.1
- (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
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
8- lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.htmlnvdMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2020/04/23/1nvdMailing ListThird Party Advisory
- gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12519.txtnvdThird 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-20210205-0006/nvdThird Party Advisory
- usn.ubuntu.com/4356-1/nvdThird Party Advisory
- www.debian.org/security/2020/dsa-4682nvdThird Party Advisory
News mentions
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