CVE-2022-37032 Denial of service in n/a

Critical 9.1 Published 19 Sep 2022 Updated 3 Aug 2024

An out-of-bounds read in the FRRouting BGP daemon allows attackers to cause a segmentation fault and denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2022-37032?

CVE-2022-37032 is a critical denial of service vulnerability in Debian Debian Linux, published on 19 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An out-of-bounds read in the BGP daemon of FRRouting FRR before 8.4 may lead to a segmentation fault and denial of service. This occurs in bgp_capability_msg_parse in bgpd/bgp_packet.c.

Weakness: CWE-125

Which versions are affected by CVE-2022-37032?

It affects 2 products.

Linux distribution packages (12)

`frr` AlmaLinux:8	All versions	`7.5.1-7.el8`
`frr-selinux` AlmaLinux:8	All versions	`7.5.1-7.el8`
`frr` AlmaLinux:9	All versions	`8.3.1-5.el9`
`frr-selinux` AlmaLinux:9	All versions	`8.3.1-5.el9`
`frr` Red Hat:enterprise_linux:8::appstream	All versions	`0:7.5.1-7.el8`
`frr-debuginfo` Red Hat:enterprise_linux:8::appstream	All versions	`0:7.5.1-7.el8`
`frr-debugsource` Red Hat:enterprise_linux:8::appstream	All versions	`0:7.5.1-7.el8`
`frr-selinux` Red Hat:enterprise_linux:8::appstream	All versions	`0:7.5.1-7.el8`
`frr` Red Hat:enterprise_linux:9::appstream	All versions	`0:8.3.1-5.el9`
`frr-debuginfo` Red Hat:enterprise_linux:9::appstream	All versions	`0:8.3.1-5.el9`
`frr-debugsource` Red Hat:enterprise_linux:9::appstream	All versions	`0:8.3.1-5.el9`
`frr-selinux` Red Hat:enterprise_linux:9::appstream	All versions	`0:8.3.1-5.el9`

Products include Debian Debian Linux, Frrouting Frrouting.

How do I fix CVE-2022-37032?

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-2022-37032 being exploited?

There is no known exploitation of CVE-2022-37032 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

All Debian Debian Linux vulnerabilities

Sources

Also known as ALSA-2023:2202, ALSA-2023:2801, DEBIAN-CVE-2022-37032, DLA-3211-1, DSA-5362-1, GHSA-mxrw-2vpr-fpwr and 3 more.