Out-of-bounds Read in Frrouting
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.
Vulnerability class: Buffer Overflow
EPSS: 0.020 (78.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Frrouting
- Debian Debian_linux — versions 10.0, 11.0, 12.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-40302?
- CVE-2022-40302 is a medium-severity vulnerability in Frrouting, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2023-05-03.
- How severe is CVE-2022-40302?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2022-40302 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.