CVE-2022-40302

frr: denial of service by crafting a BGP OPEN message with an option of type 0xff

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Se descubrió un problema en bgpd en FRRouting (FRR) a través de 8.4. Al crear un mensaje BGP OPEN con una opción de tipo 0xff (longitud extendida de RFC 9072), los atacantes pueden provocar una denegación de servicio (error de aserción y reinicio del servicio, o lectura fuera de los límites). Esto es posible debido a comprobaciones de límites incoherentes que no tienen en cuenta la lectura de 3 bytes (en lugar de 2) en este caso 0xff.

A vulnerability was found in FRRouting. The issue occurs in bgpd in FRRouting (FRR). 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 flaw is possible due to inconsistent boundary checks that do not account for reading 3 bytes (instead of 2) in this 0xff case.

*Credits: N/A

CVSS Scores

NISTv3.1 6.5

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-09-09 CVE Reserved
2023-05-03 CVE Published
2024-06-04 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read
CWE-400: Uncontrolled Resource Consumption

CAPEC

References (5)

URL	Tag	Source
https://github.com/FRRouting/frr/releases	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.debian.org/security/2023/dsa-5495	2024-02-01
https://access.redhat.com/security/cve/CVE-2022-40302	2023-11-07
https://bugzilla.redhat.com/show_bug.cgi?id=2196090	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Frrouting Search vendor "Frrouting"		Frrouting Search vendor "Frrouting" for product "Frrouting"				<= 8.4 Search vendor "Frrouting" for product "Frrouting" and version " <= 8.4"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				12.0 Search vendor "Debian" for product "Debian Linux" and version "12.0"		-		Affected