CVE-2022-40302

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.

CVSS v3.1

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

2.00% chance of exploitation in the next 30 days, 79th percentile

Published

2023-05-03

Updated

2025-01-30

Proof-of-concept exploits (1)

• Forescout/bgp_boofuzzer65★ · 2025-02-19

References

• CVE Record
• NVD entry

Related

• CVE-2022-43681
• CVE-2022-40297
• CVE-2022-40305
• CVE-2022-40282
• CVE-2022-40306
• CVE-2022-40250