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ubuntucveUbuntu.comUB:CVE-2023-42364
HistoryNov 27, 2023 - 12:00 a.m.

CVE-2023-42364

2023-11-2700:00:00
ubuntu.com
ubuntu.com
17
cve-2023-42364
busybox
denial of service
awk pattern
use-after-free vulnerability

5.5 Medium

CVSS3

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

5.5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.9%

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

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 as of 2024-06-17, there is no fix from upstream for the regression, deferring for now

5.5 Medium

CVSS3

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

5.5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.9%