CVE-2023-38283

In OpenBGPD before 8.1, incorrect handling of BGP update data (length of path attributes) set by a potentially distant remote actor may cause the system to incorrectly reset a session. This is fixed in OpenBSD 7.3 errata 006.

• CWE-754

• https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handlingExploit, Third Party Advisory
• https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/006_bgpd.patch.sigPatch
• https://github.com/openbgpd-portable/openbgpd-portable/releases/tag/8.1Release Notes
• https://news.ycombinator.com/item?id=37305800Mailing List
• https://www.openbsd.org/errata73.htmlRelease Notes
• https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handlingExploit, Third Party Advisory
• https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/006_bgpd.patch.sigPatch
• https://github.com/openbgpd-portable/openbgpd-portable/releases/tag/8.1Release Notes
• https://news.ycombinator.com/item?id=37305800Mailing List
• https://www.openbsd.org/errata73.htmlRelease Notes

Published

Aug 29, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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