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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2023-45322
HistoryOct 06, 2023 - 10:15 p.m.

CVE-2023-45322

2023-10-0622:15:11
Debian Security Bug Tracker
security-tracker.debian.org
19
libxml2
use-after-free
vulnerability
memory allocation
xmlunlinknode
vendor's position
unix

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.5

Confidence

High

EPSS

0.001

Percentile

18.8%

libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor’s position is “I don’t think these issues are critical enough to warrant a CVE ID … because an attacker typically can’t control when memory allocations fail.”

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.5

Confidence

High

EPSS

0.001

Percentile

18.8%