Bug 2184468 (CVE-2022-36440) - CVE-2022-36440 frr: Reachable assertion in peek_for_as4_capability function
Summary: CVE-2022-36440 frr: Reachable assertion in peek_for_as4_capability function
Keywords:
Status: NEW
Alias: CVE-2022-36440
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2184469 2184869 2184870
Blocks: 2184470
TreeView+ depends on / blocked
 
Reported: 2023-04-04 19:18 UTC by Pedro Sampaio
Modified: 2024-03-04 08:33 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A reachable assertion flaw was found in Frrouting frr-bgpd in the peek_for_as4_capability function. This flaw allows an attacker to maliciously construct BGP open packets and send them to BGP peers running frr-bgpd, resulting in a denial of service.
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Last Closed:
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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:6434 0 None None None 2023-11-07 08:16:40 UTC

Description Pedro Sampaio 2023-04-04 19:18:51 UTC 
A reachable assertion was found in Frrouting frr-bgpd 8.3.0 in the peek_for_as4_capability function. Attackers can maliciously construct BGP open packets and send them to BGP peers running frr-bgpd, resulting in DoS.

https://github.com/spwpun/pocs/blob/main/frr-bgpd.md
https://github.com/spwpun/pocs
https://github.com/FRRouting/frr/issues/13202
Comment 1 Pedro Sampaio 2023-04-04 19:19:05 UTC 
Created frr tracking bugs for this issue:

Affects: fedora-all [bug 2184469]
Comment 4 errata-xmlrpc 2023-11-07 08:16:39 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:6434 https://access.redhat.com/errata/RHSA-2023:6434
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