Out-of-bounds Read Affecting frr-selinux package, versions <0:8.3.1-11.el9_3


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.11% (46th percentile)

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  • Snyk IDSNYK-RHEL9-FRRSELINUX-5508826
  • published8 May 2023
  • disclosed3 May 2023

Introduced: 3 May 2023

CVE-2022-43681  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade RHEL:9 frr-selinux to version 0:8.3.1-11.el9_3 or higher.
This issue was patched in RHSA-2023:6434.

NVD Description

Note: Versions mentioned in the description apply only to the upstream frr-selinux package and not the frr-selinux package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

An out-of-bounds read exists in the BGP daemon of FRRouting FRR through 8.4. When sending a malformed BGP OPEN message that ends with the option length octet (or the option length word, in case of an extended OPEN message), the FRR code reads of out of the bounds of the packet, throwing a SIGABRT signal and exiting. This results in a bgpd daemon restart, causing a Denial-of-Service condition.

CVSS Scores

version 3.1