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debianDebianDEBIAN:DSA-5391-1:AF418
HistoryApr 20, 2023 - 8:45 p.m.

[SECURITY] [DSA 5391-1] libxml2 security update

2023-04-2020:45:49
lists.debian.org
30
xml
cve-2023-28484
cve-2023-29469
memory errors
update
vulnerability
debian
hashing
libxml2
denial of service
html
null pointer

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 Security Advisory DSA-5391-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
April 20, 2023 https://www.debian.org/security/faq


Package : libxml2
CVE ID : CVE-2023-28484 CVE-2023-29469
Debian Bug : 1034436 1034437

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 the stable distribution (bullseye), these problems have been fixed in
version 2.9.10+dfsg-6.7+deb11u4.

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 Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]

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%