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veracodeVeracode Vulnerability DatabaseVERACODE:46817
HistoryMay 09, 2024 - 3:34 a.m.

Use After Free

2024-05-0903:34:43
Veracode Vulnerability Database
sca.analysiscenter.veracode.com
4
libvirt
use after free
vulnerability
race condition
virnetclientioeventloop
stack-allocated
structure
fine-grained access control
attacker
limited access
unprivileged user
virtproxyd
authenticating

6.2 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.7%

libvirt is vulnerable to Use After Free. The vulnerability is due to a race condition in the virNetClientIOEventLoop() method, where the data pointer to a stack-allocated structure is used after the stack frame is freed. If libvirt is configured with fine-grained access control, an attacker could potentially escape their limited access. Furthermore, a local unprivileged user can access virtproxyd without authenticating.

CPENameOperatorVersion
libvirt.sole0.10003.0
libvirt.sole0.10003.0

6.2 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.7%