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CVE-2023-38283

MEDIUM
5.3
CVSS Score
Published: August 29, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 06:09 AM UTC
2 products affected across 2 vendorsOpenbgpdOpenbgpd· also runs on 1 platform

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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Openbgpd· Openbgpd
95%
v < 8.1
Affected range stops below 8.1, so it looks safe — our inference, not a vendor statement
openbsd-openbsd (environment)
Openbgpd· Bgp
60%
v < 8.1
Affected range stops below 8.1, so it looks safe — our inference, not a vendor statement

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

ExploitThird Party Advisory
Source: [email protected]
https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handling
Patch
Source: [email protected]
https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/006_bgpd.patch.sig
Release Notes
Source: [email protected]
https://github.com/openbgpd-portable/openbgpd-portable/releases/tag/8.1
Mailing List
Source: [email protected]
https://news.ycombinator.com/item?id=37305800
Release Notes
Source: [email protected]
https://www.openbsd.org/errata73.html

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-754

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