Published: 11/07/2019 Updated: 07/11/2023

CVSS v2 Base Score: 6.8 | Impact Score: 6.4 | Exploitability Score: 8.6

CVSS v3 Base Score: 8.8 | Impact Score: 5.9 | Exploitability Score: 2.8

VMScore: 606

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

An issue exists in Squid 4.0.23 up to and including 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.

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squid-cache squid
fedoraproject fedora 29
debian debian linux 10.0
canonical ubuntu linux 18.04
canonical ubuntu linux 19.04
canonical ubuntu linux 16.04
redhat enterprise linux 8.0
redhat enterprise linux eus 8.1
redhat enterprise linux eus 8.2
redhat enterprise linux server tus 8.2
redhat enterprise linux server aus 8.2
redhat enterprise linux server tus 8.4
redhat enterprise linux eus 8.4
redhat enterprise linux server aus 8.4
redhat enterprise linux server aus 8.6
redhat enterprise linux server tus 8.6
redhat enterprise linux eus 8.6

Synopsis Important: squid:4 security update Type/Severity Security Advisory: Important Topic An update for the squid:4 module is now available for Red Hat Enterprise Linux 8Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVSS) ...

Several security issues were fixed in Squid ...

Several vulnerabilities were discovered in Squid, a fully featured web proxy cache The flaws in the HTTP Digest Authentication processing, the HTTP Basic Authentication processing and in the cachemgrcgi allowed remote attackers to perform denial of service and cross-site scripting attacks, and potentially the execution of arbitrary code For the ...

Impact: Moderate Public Date: 2019-07-12 CWE: CWE-122 Bugzilla: 1730533: CVE-2019-12527 squid: heap-bas ...

Due to incorrect buffer management Squid versions prior to 48 are vulnerable to a heap overflow and possible remote code execution attack when processing HTTP Authentication credentials ...

CWE-787 http://www.squid-cache.org/Versions/v4/changesets/http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patch https://github.com/squid-cache/squid/commits/v4 http://www.securityfocus.com/bid/109143 https://usn.ubuntu.com/4065-1/https://www.debian.org/security/2019/dsa-4507 https://seclists.org/bugtraq/2019/Aug/42 https://access.redhat.com/errata/RHSA-2019:2593 http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/https://access.redhat.com/errata/RHSA-2019:2593 https://usn.ubuntu.com/4065-1/https://nvd.nist.gov

CVE-2019-12527

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