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prionPRIOn knowledge basePRION:CVE-2022-40318
HistoryMay 03, 2023 - 12:16 p.m.

Out-of-bounds

2023-05-0312:16:00
PRIOn knowledge base
www.prio-n.com
9
bgpd
frrouting
bgp open
denial of service
assertion failure
out-of-bounds read
boundary checks
cve-2022-40302

6.4 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

26.2%

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.

6.4 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

26.2%