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AUSCERT External Security Bulletin Redistribution
ESB-2018.2347
libxml2 vulnerabilities
15 August 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: libxml2
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-14567 CVE-2018-14404 CVE-2017-18258
CVE-2017-16932 CVE-2016-9318
Reference: ESB-2018.1777
ESB-2018.1054
ESB-2017.3204
ESB-2017.2550
Original Bulletin:
http://www.ubuntu.com/usn/usn-3739-1
http://www.ubuntu.com/usn/usn-3739-2
Comment: This bulletin contains two (2) Ubuntu security advisories.
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USN-3739-1: libxml2 vulnerabilities
14 August 2018
libxml2 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
o Ubuntu 14.04 LTS
Summary
Several security issues were fixed in libxml2.
Software Description
o libxml2 - GNOME XML library
Details
Matias Brutti discovered that libxml2 incorrectly handled certain XML files. An
attacker could possibly use this issue to expose sensitive information.
(CVE-2016-9318)
It was discovered that libxml2 incorrectly handled certain files. An attacker
could possibly use this issue to cause a denial of service. This issue only
affected Ubuntu 18.04 LTS. (CVE-2017-16932)
It was discovered that libxml2 incorrectly handled certain files. An attacker
could possibly use this issue to cause a denial of service. (CVE-2017-18258,
CVE-2018-14404, CVE-2018-14567)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 18.04 LTS
libxml2 - 2.9.4+dfsg1-6.1ubuntu1.2
libxml2-utils - 2.9.4+dfsg1-6.1ubuntu1.2
python-libxml2 - 2.9.4+dfsg1-6.1ubuntu1.2
python3-libxml2 - 2.9.4+dfsg1-6.1ubuntu1.2
Ubuntu 16.04 LTS
libxml2 - 2.9.3+dfsg1-1ubuntu0.6
libxml2-utils - 2.9.3+dfsg1-1ubuntu0.6
python-libxml2 - 2.9.3+dfsg1-1ubuntu0.6
Ubuntu 14.04 LTS
libxml2 - 2.9.1+dfsg1-3ubuntu4.13
libxml2-utils - 2.9.1+dfsg1-3ubuntu4.13
python-libxml2 - 2.9.1+dfsg1-3ubuntu4.13
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-2016-9318
o CVE-2017-16932
o CVE-2017-18258
o CVE-2018-14404
o CVE-2018-14567
(C) 2017 Canonical Ltd. Ubuntu and Canonical are registered trademarks of
Canonical Ltd.
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USN-3739-2: libxml2 vulnerabilities
14 August 2018
libxml2 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 12.04 ESM
Summary
Several security issues were fixed in libxml2.
Software Description
o libxml2 - GNOME XML library
Details
USN-3739-1 fixed a vulnerability in libxml2. This update provides the
corresponding update for Ubuntu 12.04.
Original advisory details:
Matias Brutti discovered that libxml2 incorrectly handled certain XML files. An
attacker could possibly use this issue to expose sensitive information.
(CVE-2016-9318)
It was discovered that libxml2 incorrectly handled certain files. An attacker
could possibly use this issue to cause a denial of service. (CVE-2018-14404)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 12.04 ESM
libxml2 - 2.7.8.dfsg-5.1ubuntu4.21
libxml2-utils - 2.7.8.dfsg-5.1ubuntu4.21
python-libxml2 - 2.7.8.dfsg-5.1ubuntu4.21
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 USN-3739-1
o CVE-2016-9318
o CVE-2018-14404
(C) 2017 Canonical Ltd. Ubuntu and Canonical are registered trademarks of
Canonical Ltd.
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