CVE-2024-20315 Auth bypass in Cisco IOS XR Software
Unauthenticated remote attackers can bypass configured Access Control Lists on MPLS interfaces, gaining unauthorized access to protected resources.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-20315?
CVE-2024-20315 is a medium-severity authentication bypass vulnerability in Cisco IOS XR Software, published on 13 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the access control list (ACL) processing on MPLS interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to improper assignment of lookup keys to internal interface contexts. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to access resources behind the affected device that were supposed to be protected by a configured ACL.
Weakness: CWE-284
Which versions are affected by CVE-2024-20315?
How do I fix CVE-2024-20315?
No fix has been published for CVE-2024-20315 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2024-20315 being exploited?
There is no known exploitation of CVE-2024-20315 in the wild and no public exploit code.
Sources
Also known as GHSA-v5qr-gm4v-2cgg.