CVE-2019-12527 Information
Share on:Description
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.
CVSS Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Reference
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/[email protected]/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/ https://seclists.org/bugtraq/2019/Aug/42 https://usn.ubuntu.com/4065-1/ https://www.debian.org/security/2019/dsa-4507
Attack Complexity
LOW
Privileges Required
NONE
User Interaction Required
NONE
Scope
REQUIRED
Confidentiality Impact
UNCHANGED
Integrity Impact
HIGH
Availability Impact
HIGH
Base Score
HIGH
Base Severity
8.8