Bug 1770360 (CVE-2019-18679)

Summary: CVE-2019-18679 squid: Information Disclosure issue in HTTP Digest Authentication
Product: [Other] Security Response Reporter: Pedro Sampaio <psampaio>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: anon.amish, code, jonathansteffan, luhliari, uwe.knop
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: squid 4.9 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-11-04 02:23:01 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1770361, 1771282, 1771283    
Bug Blocks: 1770363    

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.



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:


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

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.

Comment 7 Product Security DevOps Team 2020-11-04 02:23:01 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


Comment 8 errata-xmlrpc 2020-11-04 03:31:20 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:4743 https://access.redhat.com/errata/RHSA-2020:4743