Vulnerability Details CVE-2019-12527
An issue was discovered in Squid 4.0.23 through 4.7. When checking Basic Authentication with HttpHeader::getAuth, Squid uses a global buffer to store the decoded data. Squid does not check that the decoded length isn't greater than the buffer, leading to a heap-based buffer overflow with user controlled data.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.189
EPSS Ranking 95.1%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 6.8
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.securityfocus.com/bid/109143
- http://www.squid-cache.org/Versions/v4/changesets/
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patch
- https://access.redhat.com/errata/RHSA-2019:2593
- https://github.com/squid-cache/squid/commits/v4
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
- https://seclists.org/bugtraq/2019/Aug/42
- https://usn.ubuntu.com/4065-1/
- https://www.debian.org/security/2019/dsa-4507
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
- http://www.securityfocus.com/bid/109143
- http://www.squid-cache.org/Versions/v4/changesets/
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patch
- https://access.redhat.com/errata/RHSA-2019:2593
- https://github.com/squid-cache/squid/commits/v4
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
- https://seclists.org/bugtraq/2019/Aug/42
- https://usn.ubuntu.com/4065-1/
- https://www.debian.org/security/2019/dsa-4507
Products affected by CVE-2019-12527
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cpe:2.3:a:squid-cache:squid:4.0.23
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cpe:2.3:a:squid-cache:squid:4.0.24
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cpe:2.3:a:squid-cache:squid:4.0.25
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cpe:2.3:a:squid-cache:squid:4.3
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cpe:2.3:a:squid-cache:squid:4.4
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cpe:2.3:a:squid-cache:squid:4.6
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cpe:2.3:a:squid-cache:squid:4.7
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cpe:2.3:o:canonical:ubuntu_linux:16.04
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cpe:2.3:o:canonical:ubuntu_linux:18.04
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cpe:2.3:o:canonical:ubuntu_linux:19.04
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:fedoraproject:fedora:29
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cpe:2.3:o:redhat:enterprise_linux:8.0
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cpe:2.3:o:redhat:enterprise_linux_eus:8.1
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cpe:2.3:o:redhat:enterprise_linux_eus:8.2
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cpe:2.3:o:redhat:enterprise_linux_eus:8.4
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cpe:2.3:o:redhat:enterprise_linux_eus:8.6
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cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2
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cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4
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cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6
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cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2
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cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4
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cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6