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CVE-2023-38283

Good to know:

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Date: August 28, 2023

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.

Language: C

Severity Score

Related Resources (7)

https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handling
https://nvd.nist.gov/vuln/detail/CVE-2023-38283
https://www.openbsd.org/errata73.html
https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/006_bgpd.patch.sig
https://news.ycombinator.com/item?id=37305800
https://github.com/openbgpd-portable/openbgpd-portable/releases/tag/8.1
https://www.mend.io/vulnerability-database/CVE-2023-38283

Severity Score

Weakness Type (CWE)

Improper Check for Unusual or Exceptional Conditions

CWE-754

Top Fix

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Upgrade to version openbgpd-8.1

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): LOW
Availability (A): NONE

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