Bug 2235839 (CVE-2023-41358) - CVE-2023-41358 frr: processes invalid NLRIs if attribute length is zero
Summary: CVE-2023-41358 frr: processes invalid NLRIs if attribute length is zero
Keywords:
Status: NEW
Alias: CVE-2023-41358
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2235845 2235846 2235847 2235848 2236309 2236310 2236464
Blocks: 2230985
TreeView+ depends on / blocked
 
Reported: 2023-08-29 20:47 UTC by Anten Skrabec
Modified: 2024-04-30 09:42 UTC (History)
2 users (show)

Fixed In Version: frr 9.1, frr 8.5-stable
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in FRRouting, where it is susceptible to a denial of service vulnerability triggered by a NULL pointer dereference issue during the processing of Network Layer Reachability Information (NLRIs) with a zero attribute length. The vulnerability arises from inadequate validation of user-supplied input in bgpd/bgp_packet.c when handling NLRIs. This flaw allows attackers to send specially crafted input, causing a crash that leads to a denial of service attack.
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Last Closed:
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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2024:2156 0 None None None 2024-04-30 09:42:02 UTC

Description Anten Skrabec 2023-08-29 20:47:35 UTC 
An issue was discovered in FRRouting FRR through 9.0. bgpd/bgp_packet.c processes NLRIs if the attribute length is zero.

https://github.com/FRRouting/frr/pull/14260
Comment 3 msiddiqu 2023-08-31 10:37:43 UTC 
Created frr tracking bugs for this issue:

Affects: fedora-all [bug 2236464]
Comment 4 errata-xmlrpc 2024-04-30 09:42:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:2156 https://access.redhat.com/errata/RHSA-2024:2156
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