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AUSCERT External Security Bulletin Redistribution
ESB-2020.0471
USN-4274-1: libxml2 vulnerabilities
11 February 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: libxml2
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-7595 CVE-2019-19956
Reference: ESB-2020.0025
Original Bulletin:
https://usn.ubuntu.com/4274-1/
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USN-4274-1: libxml2 vulnerabilities
10 February 2020
libxml2 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.10
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
o Ubuntu 14.04 ESM
o Ubuntu 12.04 ESM
Summary
Several security issues were fixed in libxml2.
Software Description
o libxml2 - GNOME XML library
Details
It was discovered that libxml2 incorrectly handled certain XML files. An
attacker could possibly use this issue to cause a denial of service.
(CVE-2019-19956, CVE-2020-7595)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.10
libxml2 - 2.9.4+dfsg1-7ubuntu3.1
libxml2-utils - 2.9.4+dfsg1-7ubuntu3.1
Ubuntu 18.04 LTS
libxml2 - 2.9.4+dfsg1-6.1ubuntu1.3
libxml2-utils - 2.9.4+dfsg1-6.1ubuntu1.3
Ubuntu 16.04 LTS
libxml2 - 2.9.3+dfsg1-1ubuntu0.7
libxml2-utils - 2.9.3+dfsg1-1ubuntu0.7
Ubuntu 14.04 ESM
libxml2 - 2.9.1+dfsg1-3ubuntu4.13+esm1
libxml2-utils - 2.9.1+dfsg1-3ubuntu4.13+esm1
Ubuntu 12.04 ESM
libxml2 - 2.7.8.dfsg-5.1ubuntu4.22
libxml2-utils - 2.7.8.dfsg-5.1ubuntu4.22
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
In general, a standard system update will make all the necessary changes.
References
o CVE-2019-19956
o CVE-2020-7595
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