Denial of service in Arista EOS with BGP Link State

1) Memory leak

EUVDB-ID: #VU109383

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-9135

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak on systems with configured BGP Link State. A remote BGP peer flap can force the BGP agent to leak memory and perform denial of service attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Arista Extensible Operating System (EOS): before

CPE2.3

• cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*

External links

https://www.arista.com/en/support/advisories-notices/security-advisory/21092-security-advisory-0110

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.