critical
CVE-2019-12525
squid: parsing of header Proxy-Authentication leads to memory corruption
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat4.3CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by AlmaLinux (high), Amazon (high), Oracle (high), Rocky Linux (high), Red Hat (medium), Ubuntu (medium).
Description
An issue was discovered in Squid 3.3.9 through 3.5.28 and 4.x through 4.7. When Squid is configured to use Digest authentication, it parses the header Proxy-Authorization. It searches for certain tokens such as domain, uri, and qop. Squid checks if this token's value starts with a quote and ends with one. If so, it performs a memcpy of its length minus 2. Squid never checks whether the value is just a single quote (which would satisfy its requirements), leading to a memcpy of its length minus 1.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| alma 8 | squid:4::libecap, squid:4::libecap-devel | 1.0.1-2.module_el8.6.0+2741+01592ae8 |
| alpine 3.10 | squid | 4.8-r0 |
| alpine 3.9 | squid | 4.8-r0 |
| amazon linux 1 | squid, squid-debuginfo, squid-migration-script | 7:3.5.20-15.39.amzn1 |
| amazon linux 2 | squid, squid-debuginfo, squid-migration-script and 1 more | 7:3.5.20-15.amzn2.1 |
| debian 10 | squid | 4.6-1+deb10u1 |
| debian 11 | squid | 4.8-1 |
| debian 12 | squid | 4.8-1 |
| debian 13 | squid | 4.8-1 |
| debian 14 | squid | 4.8-1 |
| debian 8 | squid3 | 3.4.8-6+deb8u8 |
| debian 9 | squid3 | 3.5.23-5+deb9u2 |
Show all 33 entries from 22 sources
| Source | Package | Fixed in |
|---|---|---|
| alma 8 | squid:4::libecap | 1.0.1-2.module_el8.6.0+2741+01592ae8 |
| alma 8 | squid:4::libecap-devel | 1.0.1-2.module_el8.6.0+2741+01592ae8 |
| alpine 3.10 | squid | 4.8-r0 |
| alpine 3.9 | squid | 4.8-r0 |
| amazon linux 1 | squid | 7:3.5.20-15.39.amzn1 |
| amazon linux 1 | squid-debuginfo | 7:3.5.20-15.39.amzn1 |
| amazon linux 1 | squid-migration-script | 7:3.5.20-15.39.amzn1 |
| amazon linux 2 | squid | 7:3.5.20-15.amzn2.1 |
| amazon linux 2 | squid-debuginfo | 7:3.5.20-15.amzn2.1 |
| amazon linux 2 | squid-migration-script | 7:3.5.20-15.amzn2.1 |
| amazon linux 2 | squid-sysvinit | 7:3.5.20-15.amzn2.1 |
| debian 10 | squid | 4.6-1+deb10u1 |
| debian 11 | squid | 4.8-1 |
| debian 12 | squid | 4.8-1 |
| debian 13 | squid | 4.8-1 |
| debian 14 | squid | 4.8-1 |
| debian 8 | squid3 | 3.4.8-6+deb8u8 |
| debian 9 | squid3 | 3.5.23-5+deb9u2 |
| echo | squid | 4.8-1 |
| Oracle Linux 7 | squid | 7:3.5.20-15.el7_8.1 |
| Oracle Linux 7 | squid-migration-script | 7:3.5.20-15.el7_8.1 |
| Oracle Linux 7 | squid-sysvinit | 7:3.5.20-15.el7_8.1 |
| Oracle Linux 8 | libecap | 1.0.1-2.module+el8.1.0+5405+03b963f4 |
| Oracle Linux 8 | libecap-devel | 1.0.1-2.module+el8.1.0+5405+03b963f4 |
| Oracle Linux 8 | squid | 7:4.4-8.module+el8.2.0+7611+d512f060.1 |
| Red Hat | squid34 | no fix listed |
| rocky 8 | squid:4::libecap | 1.0.1-2.module+el8.4.0+404+316a0dc5 |
| rocky 8 | squid:4::libecap-devel | 1.0.1-2.module+el8.4.0+404+316a0dc5 |
| ubuntu 16.04 | squid3 | 3.5.12-1ubuntu7.8 |
| ubuntu 16.04-ESM | squid3 | 3.5.12-1ubuntu7.8 |
| ubuntu 18.04 | squid3 | 3.5.27-1ubuntu1.3 |
| ubuntu 18.04-ESM | squid3 | 3.5.27-1ubuntu1.3 |
| ubuntu 19.04 | squid | 4.4-1ubuntu2.2 |
References
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
- http://www.squid-cache.org/Advisories/SQUID-2019_3.txt
- http://www.squid-cache.org/Versions/v4/changesets/
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patch
- https://access.redhat.com/security/cve/CVE-2019-12525
- https://bugzilla.redhat.com/show_bug.cgi?id=1730535
- https://bugzilla.redhat.com/show_bug.cgi?id=1827552
All 28 references
- https://bugzilla.redhat.com/show_bug.cgi?id=1827563
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12519
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12525
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11945
- https://errata.almalinux.org/8/ALSA-2020-2041.html
- https://errata.rockylinux.org/RLSA-2020:2041
- https://github.com/squid-cache/squid/commits/v4
- https://linux.oracle.com/cve/CVE-2019-12525.html
- https://linux.oracle.com/errata/ELSA-2020-2041.html
- https://lists.debian.org/debian-lts-announce/2019/07/msg00018.html
- https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
- https://nvd.nist.gov/vuln/detail/CVE-2019-12525
- https://seclists.org/bugtraq/2019/Aug/42
- https://ubuntu.com/security/notices/USN-4065-1
- https://ubuntu.com/security/notices/USN-4065-2
- https://usn.ubuntu.com/4065-1/
- https://usn.ubuntu.com/4065-2/
- https://www.cve.org/CVERecord?id=CVE-2019-12525
- https://www.debian.org/security/2019/dsa-4507