Bug 2196091 (CVE-2022-40318) - CVE-2022-40318 frr: denial of service by crafting a BGP OPEN message with an option of type in bgp_open_option_parse in the bgp_open.c 0xff
Summary: CVE-2022-40318 frr: denial of service by crafting a BGP OPEN message with an ...
Keywords:
Status: NEW
Alias: CVE-2022-40318
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
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Depends On: 2196094 2196796
Blocks: 2193421
TreeView+ depends on / blocked
 
Reported: 2023-05-08 04:14 UTC by Sandipan Roy
Modified: 2023-11-07 08:16 UTC (History)
2 users (show)

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A vulnerability was found in FRRouting. The issue occurs in bgpd in FRRouting (FRR). By crafting a BGP OPEN message with an option of type 0xff (Extended Length from RFC 9072), attackers may cause a denial of service (assertion failure and daemon restart or out-of-bounds read). This flaw is possible due to inconsistent boundary checks that do not account for reading 3 bytes (instead of 2) in this 0xff case. This behavior occurs in the bgp_open_option_parse in the bgp_open.c file, a different location (with a different attack vector) relative to CVE-2022-40302.
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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 08:16:42 UTC

Description Sandipan Roy 2023-05-08 04:14:15 UTC 
An issue was discovered in bgpd in FRRouting (FRR) through 8.4. By crafting a BGP OPEN message with an option of type 0xff (Extended Length from RFC 9072), attackers may cause a denial of service (assertion failure and daemon restart, or out-of-bounds read). This is possible because of inconsistent boundary checks that do not account for reading 3 bytes (instead of 2) in this 0xff case. NOTE: this behavior occurs in bgp_open_option_parse in the bgp_open.c file, a different location (with a different attack vector) relative to CVE-2022-40302.

https://github.com/FRRouting/frr/releases
Comment 4 errata-xmlrpc 2023-11-07 08:16:40 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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