Vulnerability · Published Nov 6, 2023 · Assigned by mitre
CVE-2023-38406
Critical 9.8
In plain English
A critical-severity security flaw in the frr package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)0.9%top 38.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
bgpd/bgp_flowspec.c in FRRouting (FRR) before 8.4.3 mishandles an nlri length of zero, aka a "flowspec overflow."
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | frr | 7.5.1-13.el8_9.3.alma.1 | ALSA-2024:0130 |
| AlmaLinux:9 | frr | 8.3.1-11.el9_3.2.alma.1 | ALSA-2024:0477 |
| AlmaLinux:8 | frr-selinux | 7.5.1-13.el8_9.3.alma.1 | ALSA-2024:0130 |
| AlmaLinux:9 | frr-selinux | 8.3.1-11.el9_3.2.alma.1 | ALSA-2024:0477 |
| Debian:12 | frr | 8.4.4-1.1~deb12u1 | DEBIAN-CVE-2023-38406 |
| Debian:13 | frr | 8.4.4-1 | DEBIAN-CVE-2023-38406 |
| Debian:14 | frr | 8.4.4-1 | DEBIAN-CVE-2023-38406 |
| Rocky Linux:8 | frr | 0:7.5.1-13.el8_9.3 | RLSA-2024:0130 |
| Ubuntu:22.04:LTS | frr | 8.1-1ubuntu1.8 | UBUNTU-CVE-2023-38406 |
| Ubuntu:22.04:LTS | frr | 8.1-1ubuntu1.8 | USN-6498-1 |