Out-of-bounds Read Affecting frr package, versions <7.5.1-1.1+deb11u2


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.11% (46th percentile)

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  • Snyk IDSNYK-DEBIAN11-FRR-5497436
  • published5 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 Debian:11 frr to version 7.5.1-1.1+deb11u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream frr package and not the frr package as distributed by Debian. See How to fix? for Debian:11 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