CVE-2023-38283

Name: CVE-2023-38283
Creator: NVD / NIST
Published: 2023-08-29T16:15:08.96+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.12%

Last modified Jun 17, 2026

CVE-2023-38283 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 1.12% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

1.12%

62.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-754

Affected Software

Vendor	Product	Versions
Openbgpd	Openbgpd	< 8.1

References

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

Timeline

Published: Aug 29, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-38283?

How severe is CVE-2023-38283?

CVE-2023-38283 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.

How do I fix CVE-2023-38283?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-38283?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST