CVE-2023-47235 Denial of service in n/a

What is CVE-2023-47235?

CVE-2023-47235 is a medium-severity denial of service vulnerability in n/a, published on 3 Nov 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

An issue was discovered in FRRouting FRR through 9.0.1. A crash can occur when a malformed BGP UPDATE message with an EOR is processed, because the presence of EOR does not lead to a treat-as-withdraw outcome.

Which versions are affected by CVE-2023-47235?

It affects 1 product.

Products include Frrouting Frrouting.

How do I fix CVE-2023-47235?

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-2023-47235 being exploited?

There is no known exploitation of CVE-2023-47235 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-31785, AZL-34691, DEBIAN-CVE-2023-47235, GHSA-5682-2jc3-w5j4, UBUNTU-CVE-2023-47235.