Bug 2100721 (CVE-2021-46784) - CVE-2021-46784 squid: DoS when processing gopher server responses
Summary: CVE-2021-46784 squid: DoS when processing gopher server responses
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-46784
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2100730 2100729 2100731 2100778 2100779 2100780 2100781 2100782 2100783 2100784 2100785
Blocks: 2100722
TreeView+ depends on / blocked
 
Reported: 2022-06-24 05:21 UTC by TEJ RATHI
Modified: 2022-08-29 19:33 UTC (History)
5 users (show)

Fixed In Version: squid 5.6
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in squid (Web proxy cache server). This issue occurs due to improper buffer management while processing Gopher server responses. This flaw leads to a remote denial of service or a crash if it receives specially crafted network traffic, either by mistake or a malicious actor.
Clone Of:
Environment:
Last Closed: 2022-08-29 19:33:15 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2022:5526 0 None None None 2022-07-07 11:52:27 UTC
Red Hat Product Errata RHSA-2022:5527 0 None None None 2022-07-07 11:29:05 UTC
Red Hat Product Errata RHSA-2022:5528 0 None None None 2022-07-07 11:47:27 UTC
Red Hat Product Errata RHSA-2022:5529 0 None None None 2022-07-07 11:42:33 UTC
Red Hat Product Errata RHSA-2022:5530 0 None None None 2022-07-07 10:57:56 UTC
Red Hat Product Errata RHSA-2022:5542 0 None None None 2022-07-11 11:15:19 UTC

Description TEJ RATHI 2022-06-24 05:21:56 UTC 
A vulnerability was found in squid. Due to improper buffer management Squid is vulnerable to a Denial of Service attack when processing Gopher server responses.

The issue is fixed upstream in 5.6.

References:
https://github.com/squid-cache/squid/security/advisories/GHSA-f5cp-6rh3-284w
Comment 1 Sandipan Roy 2022-06-24 05:59:12 UTC 
Created clustal-omega tracking bugs for this issue:

Affects: epel-all [bug 2100730]
Affects: fedora-all [bug 2100729]


Created squid tracking bugs for this issue:

Affects: fedora-all [bug 2100731]
Comment 2 Sandipan Roy 2022-06-24 09:07:59 UTC 
Upstream patch: https://github.com/squid-cache/squid/commit/780c4ea1b4c9d2fb41f6962aa6ed73ae57f74b2b
Comment 3 Sandipan Roy 2022-06-24 09:11:51 UTC 
https://github.com/squid-cache/squid/pull/1022
Comment 6 errata-xmlrpc 2022-07-07 10:57:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions

Via RHSA-2022:5530 https://access.redhat.com/errata/RHSA-2022:5530
Comment 7 errata-xmlrpc 2022-07-07 11:29:03 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2022:5527 https://access.redhat.com/errata/RHSA-2022:5527
Comment 8 errata-xmlrpc 2022-07-07 11:42:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2022:5529 https://access.redhat.com/errata/RHSA-2022:5529
Comment 9 errata-xmlrpc 2022-07-07 11:47:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Extended Update Support

Via RHSA-2022:5528 https://access.redhat.com/errata/RHSA-2022:5528
Comment 10 errata-xmlrpc 2022-07-07 11:52:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:5526 https://access.redhat.com/errata/RHSA-2022:5526
Comment 11 errata-xmlrpc 2022-07-11 11:15:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2022:5542 https://access.redhat.com/errata/RHSA-2022:5542
Comment 12 Product Security DevOps Team 2022-08-29 19:33:13 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-46784
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