CVE-2023-42364

2023-11-2700:00:00

ubuntu.com

cve-2023-42364

busybox

denial of service

awk pattern

use-after-free vulnerability

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.5

Confidence

High

EPSS

Percentile

12.7%

JSON

A use-after-free vulnerability in BusyBox v.1.36.1 allows attackers to
cause a denial of service via a crafted awk pattern in the awk.c evaluate
function.

Bugs

<https://bugs.busybox.net/show_bug.cgi?id=15868>
<https://bugs.busybox.net/show_bug.cgi?id=15871 (bug for CVE-2023-42365)>

Notes

Author	Note
eslerm	CVE-2023-42364 and CVE-2023-42365 share a patch, see both bugs upstream’s patch contains a regression alpine has a patch for the regression upstream introduced
mdeslaur	looks like the third patch below fixes the regression

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchbusybox< anyUNKNOWN
ubuntu20.04noarchbusybox< anyUNKNOWN
ubuntu22.04noarchbusybox< anyUNKNOWN
ubuntu24.04noarchbusybox< anyUNKNOWN
ubuntu14.04noarchbusybox< anyUNKNOWN
ubuntu16.04noarchbusybox< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	busybox	< any	UNKNOWN
ubuntu	20.04	noarch	busybox	< any	UNKNOWN
ubuntu	22.04	noarch	busybox	< any	UNKNOWN
ubuntu	24.04	noarch	busybox	< any	UNKNOWN
ubuntu	14.04	noarch	busybox	< any	UNKNOWN
ubuntu	16.04	noarch	busybox	< any	UNKNOWN