Frrouting · Frrouting · CVE-2023-31490
**Name of the Vulnerable Software and Affected Versions**
Frrouting bgpd version 8.4.2
**Description**
The issue is related to the `bgp attr psid sub()` function in FRRouting, which can be exploited by a remote attacker to cause a denial of service. This is due to the lack of neutralization of special elements. The exploitation of this issue may allow a remote attacker to cause a denial of service.
**Recommendations**
For version 8.4.2, consider disabling the `bgp attr psid sub()` function as a temporary workaround until a patch is available. Restrict access to the bgpd service to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.