Vulnerability CVE-2019-12527
Published: 2019-07-11

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.

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Squid-cache -> Squid 

 References:
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://github.com/squid-cache/squid/commits/v4
https://usn.ubuntu.com/4065-1/
Copyright 2024, cxsecurity.com

 

Back to Top