Vulnerability · Published Aug 29, 2023 · Assigned by mitre
CVE-2023-38802
High 7.5
In plain English
A high-severity security flaw in the frr package (AlmaLinux). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.8%top 21.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
FRRouting FRR 7.5.1 through 9.0 and Pica8 PICOS 4.3.3.2 allow a remote attacker to cause a denial of service via a crafted BGP update with a corrupted attribute 23 (Tunnel Encapsulation).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | frr | 7.5.1-7.el8_8.2.alma.1 | ALSA-2023:5219 |
| AlmaLinux:9 | frr | 8.3.1-5.el9_2.2.alma | ALSA-2023:5194 |
| AlmaLinux:8 | frr-selinux | 7.5.1-7.el8_8.2.alma.1 | ALSA-2023:5219 |
| AlmaLinux:9 | frr-selinux | 8.3.1-5.el9_2.2.alma | ALSA-2023:5194 |
| Debian:12 | frr | 8.4.4-1.1~deb12u1 | DEBIAN-CVE-2023-38802 |
| Debian:12 | frr | 8.4.4-1.1~deb12u1 | DSA-5495-1 |
| Debian:13 | frr | 8.4.4-1.1 | DEBIAN-CVE-2023-38802 |
| Debian:14 | frr | 8.4.4-1.1 | DEBIAN-CVE-2023-38802 |
| Ubuntu:22.04:LTS | frr | 8.1-1ubuntu1.5 | UBUNTU-CVE-2023-38802 |
| Ubuntu:22.04:LTS | frr | 8.1-1ubuntu1.5 | USN-6323-1 |
Affected products (as reported)
References
- https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handling
- https://news.ycombinator.com/item?id=37305800
- DSA-5495 vendor-advisory
- [debian-lts-announce] 20230919 [SECURITY] [DLA 3573-1] frr security update mailing-list
- FEDORA-2023-514db5339e vendor-advisory
- FEDORA-2023-ce436d56f8 vendor-advisory
- FEDORA-2023-61abba57d8 vendor-advisory