Improper access control in Cumulus Linux - CVE-2023-25525
Published: September 11, 2023
Vulnerability identifier: #VU80577
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-25525
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper forwarding where a VxLAN-encapsulated IPv6 packet received on the SVI interface with DMAC/DIPv6 set to the link-local address of the SVI interface. A remote attacker can bypass implemented security restrictions and gain unauthorized access to sensitive information on the system.
Affected software
Cumulus Linux
How to mitigate CVE-2023-25525
Install updates from vendor's website.
Cumulus Linux - update to 5.6.0