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Ubuntu Security Notice USN-3409-1

Ubuntu Security Notice USN-3409-1
Posted Sep 5, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3409-1 - 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. 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. 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. Various other issues were also addressed.

tags | advisory, remote, overflow, arbitrary
systems | linux, ubuntu
advisories | CVE-2017-11571, CVE-2017-11574, CVE-2017-11576
MD5 | 0f927569572bcdef45e5f4b5cfdeb1c3

Ubuntu Security Notice USN-3409-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3409-1
September 04, 2017

fontforge vulnerabilities
==========================================================================

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:
A fontforgeA A A A A A A A A A A A A A A A A A A A A A A 20120731.b-5ubuntu0.1
A fontforge-commonA A A A A A A A A A A A A A A A 20120731.b-5ubuntu0.1

In general, a standard system update will make all the necessary
changes.

References:
A https://www.ubuntu.com/usn/usn-3409-1
A CVE-2017-11568, CVE-2017-11569, CVE-2017-11571, CVE-2017-11572,
A CVE-2017-11574, CVE-2017-11575, CVE-2017-11576, CVE-2017-11577

Package Information:
A https://launchpad.net/ubuntu/+source/fontforge/20120731.b-5ubuntu0.1

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