Bug 2235835 (CVE-2023-38283) - CVE-2023-38283 openbgpd: session reset when handling unknown update packet
Summary: CVE-2023-38283 openbgpd: session reset when handling unknown update packet
Keywords:
Status: NEW
Alias: CVE-2023-38283
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 2235838
TreeView+ depends on / blocked
 
Reported: 2023-08-29 20:39 UTC by Anten Skrabec
Modified: 2023-09-14 19:52 UTC (History)
0 users

Fixed In Version: openbgpd 8.1, openbgpd 7.3
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description Anten Skrabec 2023-08-29 20:39:13 UTC 
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.

https://news.ycombinator.com/item?id=37305800
https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/006_bgpd.patch.sig
https://www.openbsd.org/errata73.html
https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handling
https://github.com/openbgpd-portable/openbgpd-portable/releases/tag/8.1
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