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debianDebianDEBIAN:DLA-2972-1:3A4A8
HistoryApr 08, 2022 - 9:17 p.m.

[SECURITY] [DLA 2972-1] libxml2 security update

2022-04-0821:17:19
lists.debian.org
98

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.011 Low

EPSS

Percentile

84.4%


Debian LTS Advisory DLA-2972-1 [email protected]
https://www.debian.org/lts/security/ Anton Gladky
April 08, 2022 https://wiki.debian.org/LTS


Package : libxml2
Version : 2.9.4+dfsg1-2.2+deb9u6
CVE ID : CVE-2016-9318 CVE-2017-5130 CVE-2017-5969 CVE-2017-16932
CVE-2022-23308

Five security issues have been discovered in libxml2: XML C parser and toolkit.

CVE-2016-9318

Vulnerable versions do not offer a flag directly indicating that the current
document may be read but other files may not be opened, which makes it
easier for remote attackers to conduct XML External Entity (XXE) attacks via
a crafted document.

CVE-2017-5130

Integer overflow in memory debug code, allowed a remote attacker to
potentially exploit heap corruption via a crafted XML file.

CVE-2017-5969

Parser in a recover mode allows remote attackers to cause a denial of service
(NULL pointer dereference) via a crafted XML document.

CVE-2017-16932

When expanding a parameter entity in a DTD, infinite recursion could lead to
an infinite loop or memory exhaustion.

CVE-2022-23308

the application that validates XML using xmlTextReaderRead() with
XML_PARSE_DTDATTR and XML_PARSE_DTDVALID  enabled becomes vulnerable to this
use-after-free bug. This issue can result in denial of service.

For Debian 9 stretch, these problems have been fixed in version
2.9.4+dfsg1-2.2+deb9u6.

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

OSVersionArchitecturePackageVersionFilename
Debian9alllibxml2<ย 2.9.4+dfsg1-2.2+deb9u6libxml2_2.9.4+dfsg1-2.2+deb9u6_all.deb

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.011 Low

EPSS

Percentile

84.4%