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Affected Component
Analysis
frr
Patched
Name
CVE-2022-40318
Description
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.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
https://github.com/FRRouting/frr/releasesThird Party Advisory
https://www.debian.org/security/2023/dsa-5495Third Party Advisory
https://github.com/FRRouting/frr/releasesThird Party Advisory
https://www.debian.org/security/2023/dsa-5495Third Party Advisory
Analysis#
Vulnerability Rating#
6.5
CVSSv31
Others affected components#
Resolved with patches#
frr (yocto:kirkstone)
#
Title
Author
Resolve
1
bgpd: Ensure FRR has enough data to read 2 bytes in
Donald Sharp <sharpd@nvidia.com>
CVE-2022-40318