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AUSCERT External Security Bulletin Redistribution
ESB-2017.2209
FontForge vulnerabilities
5 September 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: fontforge
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2017-11577 CVE-2017-11576 CVE-2017-11575
CVE-2017-11574 CVE-2017-11572 CVE-2017-11571
CVE-2017-11569 CVE-2017-11568
Reference: ESB-2017.2154
Original Bulletin:
http://www.ubuntu.com/usn/usn-3409-1
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Ubuntu Security Notice USN-3409-1
September 04, 2017
fontforge vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in FontForge.
Software Description:
- - fontforge: font editor
Details:
It was discovered that FontForge was vulnerable to a heap-based buffer
over-read. A remote attacker could use a crafted file to DoS or execute
arbitrary code. (CVE-2017-11568, CVE-2017-11569, CVE-2017-11572)
It was discovered that FontForge was vulnerable to a stack-based buffer
overflow. A remote attacker could use a crafted file to DoS or execute
arbitrary code. (CVE-2017-11571)
It was discovered that FontForge was vulnerable to a heap-based buffer
overflow. A remote attacker could use a crafted file to DoS or execute
arbitrary code. (CVE-2017-11574)
It was discovered that FontForge was vulnerable to a buffer over-read.
A remote attacker could use a crafted file to DoS or execute arbitrary
code. (CVE-2017-11575, CVE-2017-11577)
It was discovered that FontForge wasn't correctly checking the sign of
a vector size. A remote attacker could use a crafted file to DoS.
(CVE-2017-11576)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
 fontforge 20120731.b-5ubuntu0.1
 fontforge-common 20120731.b-5ubuntu0.1
In general, a standard system update will make all the necessary
changes.
References:
 https://www.ubuntu.com/usn/usn-3409-1
 CVE-2017-11568, CVE-2017-11569, CVE-2017-11571, CVE-2017-11572,
 CVE-2017-11574, CVE-2017-11575, CVE-2017-11576, CVE-2017-11577
Package Information:
 https://launchpad.net/ubuntu/+source/fontforge/20120731.b-5ubuntu0.1
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