What’s Vulnerable › Vulnerabilities

CVE-2023-38802

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-08-29 · updated 2026-06-17
• Weakness: CWE-354

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 products

• Debian Linux: 10.0, 11.0, 12.0
• Fedoraproject Fedora: 37, 38, 39
• FRRouting: from 7.5.1 through 9.0
• Pica8 Picos: 4.3.3.2

References

• https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handling
• https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JLG64IF3FU7V76K4TKCCXVNEE6P2VUDO/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LMJNX44SMJM25JZO7XWHDQCOB4SNJPIE/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WXR6PIVY4SWO7HDT4EY733H4X32SCPM4/
• https://news.ycombinator.com/item?id=37305800
• https://www.debian.org/security/2023/dsa-5495
• https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handling
• https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JLG64IF3FU7V76K4TKCCXVNEE6P2VUDO/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LMJNX44SMJM25JZO7XWHDQCOB4SNJPIE/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WXR6PIVY4SWO7HDT4EY733H4X32SCPM4/

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