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CVE-2019-12529 Detail

Description

An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html Mailing List  Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html Mailing List  Third Party Advisory 
http://www.squid-cache.org/Versions/v4/changesets/ Vendor Advisory 
http://www.squid-cache.org/Versions/v4/changesets/squid-4-dd46b5417809647f561d8a5e0e74c3aacd235258.patch Patch  Vendor Advisory 
https://github.com/squid-cache/squid/commits/v4 Patch  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2019/07/msg00018.html Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
https://seclists.org/bugtraq/2019/Aug/42 Mailing List  Third Party Advisory 
https://usn.ubuntu.com/4065-1/ Third Party Advisory 
https://usn.ubuntu.com/4065-2/ Third Party Advisory 
https://www.debian.org/security/2019/dsa-4507 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read cwe source acceptance level NIST  

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Change History

13 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-12529
NVD Published Date:
07/11/2019
NVD Last Modified:
11/06/2023
Source:
MITRE