<p>Upgrade <code>Ubuntu:18.04</code> <code>libxml2</code> to version 2.9.4+dfsg1-6.1ubuntu1.4 or higher.</p>

Out-of-bounds Write Affecting libxml2 package, versions <2.9.4+dfsg1-6.1ubuntu1.4

Threat Intelligence

1.69% (88^th percentile)

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Snyk ID SNYK-UBUNTU1804-LIBXML2-1278691
published 4 Jun 2021
disclosed 19 May 2021

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Introduced: 19 May 2021

CVE-2021-3517 Open this link in a new tab CWE-787 Open this link in a new tab

How to fix?

Upgrade Ubuntu:18.04 libxml2 to version 2.9.4+dfsg1-6.1ubuntu1.4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxml2 package and not the libxml2 package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Network
Attack Complexity (AC)

Low
Privileges Required (PR)

None
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

Low
Integrity (I)

Low
Availability (A)

High

Out-of-bounds Write Affecting libxml2 package, versions <2.9.4+dfsg1-6.1ubuntu1.4

Severity

Based on Ubuntu security rating