Medium severity · published May 3, 2023
CVE-2022-40318
An issue was discovered in bgpd in FRRouting (FRR) through 8.4
6.5
CVSS
2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0; 11.0; 12.0 · source: NVD
FR
Frrouting · Frrouting
through 8.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-40318
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-40318
Third Party Advisory
https://github.com/FRRouting/frr/releases
Mailing List
https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html
Third Party Advisory
https://www.debian.org/security/2023/dsa-5495
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