CVE-2021-33462

2022-07-2613:15:09

Debian Security Bug Tracker

security-tracker.debian.org

yasm

use-after-free

expr_traverse_nodes_post

libyasm/expr.c

cve-2021-33462

unix

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

EPSS

0.001

Percentile

23.8%

JSON

An issue was discovered in yasm version 1.3.0. There is a use-after-free in expr_traverse_nodes_post() in libyasm/expr.c.

OSVersionArchitecturePackageVersionFilename
Debian12allyasm<= 1.3.0-4yasm_1.3.0-4_all.deb
Debian11allyasm<= 1.3.0-2.1yasm_1.3.0-2.1_all.deb
Debian999allyasm<= 1.3.0-5yasm_1.3.0-5_all.deb
Debian13allyasm<= 1.3.0-5yasm_1.3.0-5_all.deb

OS	Version	Architecture	Package	Version	Filename
Debian	12	all	yasm	<= 1.3.0-4	yasm_1.3.0-4_all.deb
Debian	11	all	yasm	<= 1.3.0-2.1	yasm_1.3.0-2.1_all.deb
Debian	999	all	yasm	<= 1.3.0-5	yasm_1.3.0-5_all.deb
Debian	13	all	yasm	<= 1.3.0-5	yasm_1.3.0-5_all.deb