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AUSCERT External Security Bulletin Redistribution
ESB-2017.2096
graphite2 vulnerabilities
22 August 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: libgraphite2-3
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Access Privileged Data -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-7778 CVE-2017-7777 CVE-2017-7776
CVE-2017-7775 CVE-2017-7774 CVE-2017-7773
CVE-2017-7772 CVE-2017-7771
Reference: ASB-2017.0091
ESB-2017.1825
ESB-2017.1807
ESB-2017.1683
Original Bulletin:
http://www.ubuntu.com/usn/usn-3398-1
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USN-3398-1: graphite2 vulnerabilities
Ubuntu Security Notice USN-3398-1
21st August, 2017
graphite2 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
Ubuntu 17.04
Ubuntu 16.04 LTS
Ubuntu 14.04 LTS
Summary
graphite2 could be made to crash or run programs if it opened a specially crafted font.
Software description
graphite2 - Font rendering engine for Complex Scripts
Details
Holger Fuhrmannek and Tyson Smith discovered that graphite2 incorrectly
handled certain malformed fonts. If a user or automated system were tricked
into opening a specially-crafted font file, a remote attacker could use
this issue to cause graphite2 to crash, resulting in a denial of service,
or possibly execute arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package version:
Ubuntu 17.04:
libgraphite2-3 1.3.10-0ubuntu0.17.04.1
Ubuntu 16.04 LTS:
libgraphite2-3 1.3.10-0ubuntu0.16.04.1
Ubuntu 14.04 LTS:
libgraphite2-3 1.3.10-0ubuntu0.14.04.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart applications
using graphite2, such as LibreOffice, to make all the necessary changes.
References
CVE-2017-7771, CVE-2017-7772, CVE-2017-7773, CVE-2017-7774, CVE-2017-7775, CVE-2017-7776, CVE-2017-7777, CVE-2017-7778
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