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debianDebianDEBIAN:DLA-3405-1:64B39
HistoryApr 30, 2023 - 11:00 a.m.

[SECURITY] [DLA 3405-1] libxml2 security update

2023-04-3011:00:47
lists.debian.org
11
debian; libxml2; security update; cve-2023-28484; cve-2023-29469; xml; html; denial of service; memory errors

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

8

Confidence

High

EPSS

0.001

Percentile

46.5%


Debian LTS Advisory DLA-3405-1 [email protected]
https://www.debian.org/lts/security/ Thorsten Alteholz
April 30, 2023 https://wiki.debian.org/LTS


Package : libxml2
Version : 2.9.4+dfsg1-7+deb10u6
CVE ID : CVE-2023-28484 CVE-2023-29469

Several vulnerabilities were discovered in libxml2, a library providing
support to read, modify and write XML and HTML files.

CVE-2023-28484

A NULL pointer dereference flaw when parsing invalid XML schemas may
result in denial of service.

CVE-2023-29469

It was reported that when hashing empty strings which aren't
null-terminated, xmlDictComputeFastKey could produce inconsistent
results, which may lead to various logic or memory errors.

For Debian 10 buster, these problems have been fixed in version
2.9.4+dfsg1-7+deb10u6.

We recommend that you upgrade your libxml2 packages.

For the detailed security status of libxml2 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libxml2

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

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

8

Confidence

High

EPSS

0.001

Percentile

46.5%