Bug 1770360 (CVE-2019-18679) - CVE-2019-18679 squid: Information Disclosure issue in HTTP Digest Authentication
Summary: CVE-2019-18679 squid: Information Disclosure issue in HTTP Digest Authentication
Keywords:
Status: NEW
Alias: CVE-2019-18679
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1770361 1771282 1771283
Blocks: 1770363
TreeView+ depends on / blocked
 
Reported: 2019-11-08 19:52 UTC by Pedro Sampaio
Modified: 2019-11-13 00:50 UTC (History)
4 users (show)

Fixed In Version: squid 4.9
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed:


Attachments (Terms of Use)

Description Pedro Sampaio 2019-11-08 19:52:57 UTC
Due to incorrect data management Squid is vulnerable to a information disclosure when processing HTTP Digest Authentication.

References:

http://www.squid-cache.org/Advisories/SQUID-2019_11.txt

Comment 1 Pedro Sampaio 2019-11-08 19:53:10 UTC
Created squid tracking bugs for this issue:

Affects: fedora-all [bug 1770361]

Comment 3 Huzaifa S. Sidhpurwala 2019-11-12 05:56:26 UTC
External References:

http://www.squid-cache.org/Advisories/SQUID-2019_11.txt

Comment 4 Huzaifa S. Sidhpurwala 2019-11-12 05:56:30 UTC
Mitigation:

Remove 'auth_param digest ...' configuration settings from squid.conf.

Comment 5 Huzaifa S. Sidhpurwala 2019-11-12 05:58:50 UTC
As per upstream:  Nonce tokens contain the raw byte value of a pointer which sits within heap memory allocation. This information reduces ASLR protections and may aid attackers isolating memory areas to target for remote code execution attacks.


Note You need to log in before you can comment on or make changes to this bug.