CVE-2023-47234 Denial of service in n/a

What is CVE-2023-47234?

CVE-2023-47234 is a high-severity denial of service vulnerability in n/a, published on 3 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in FRRouting FRR through 9.0.1. A crash can occur when processing a crafted BGP UPDATE message with a MP_UNREACH_NLRI attribute and additional NLRI data (that lacks mandatory path attributes).

Which versions are affected by CVE-2023-47234?

It affects 1 product.

Products include Frrouting Frrouting.

How do I fix CVE-2023-47234?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2023-47234 being exploited?

There is no known exploitation of CVE-2023-47234 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2024-44070 Denial of service in n/a Critical 9.8
• CVE-2023-38406 bgpd/bgp_flowspec.c in FRRouting (FRR) before 8.4.3 mishandles an nlri length of zero, aka a "flowspec overflow." Critical 9.8
• CVE-2022-37035 Use after free in n/a High 8.1
• CVE-2022-26127 Memory corruption in FRRouting High 7.8
• CVE-2022-26128 Memory corruption in FRRouting High 7.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-31784, AZL-34690, DEBIAN-CVE-2023-47234, GHSA-v9pv-vrqw-885r, UBUNTU-CVE-2023-47234.