=========================================================================Ubuntu Security Notice USN-3297-1
May 24, 2017
jbig2dec vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.04
- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in jbig2dec.
Software Description:
- jbig2dec: JBIG2 decoder library
Details:
Bingchang Liu discovered that jbig2dec incorrectly handled memory when
decoding malformed image files. If a user or automated system were tricked
into processing a specially crafted JBIG2 image file, a remote attacker
could cause jbig2dec to crash, resulting in a denial of service, or
possibly execute arbitrary code. This issue only applied to Ubuntu 14.04
LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-9601)
It was discovered that jbig2dec incorrectly handled memory when decoding
malformed image files. If a user or automated system were tricked into
processing a specially crafted JBIG2 image file, a remote attacker could
cause jbig2dec to crash, resulting in a denial of service, or possibly
disclose sensitive information. (CVE-2017-7885)
Jiaqi Peng discovered that jbig2dec incorrectly handled memory when
decoding malformed image files. If a user or automated system were tricked
into processing a specially crafted JBIG2 image file, a remote attacker
could cause jbig2dec to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2017-7975)
Dai Ge discovered that jbig2dec incorrectly handled memory when decoding
malformed image files. If a user or automated system were tricked into
processing a specially crafted JBIG2 image file, a remote attacker could
cause jbig2dec to crash, resulting in a denial of service, or possibly
disclose sensitive information. (CVE-2017-7976)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.04:
jbig2dec 0.13-4ubuntu0.1
libjbig2dec0 0.13-4ubuntu0.1
Ubuntu 16.10:
jbig2dec 0.13-2ubuntu0.1
libjbig2dec0 0.13-2ubuntu0.1
Ubuntu 16.04 LTS:
jbig2dec 0.12+20150918-1ubuntu0.1
libjbig2dec0 0.12+20150918-1ubuntu0.1
Ubuntu 14.04 LTS:
jbig2dec 0.11+20120125-1ubuntu1.1
libjbig2dec0 0.11+20120125-1ubuntu1.1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-3297-1
CVE-2016-9601, CVE-2017-7885, CVE-2017-7975, CVE-2017-7976
Package Information:
https://launchpad.net/ubuntu/+source/jbig2dec/0.13-4ubuntu0.1
https://launchpad.net/ubuntu/+source/jbig2dec/0.13-2ubuntu0.1
https://launchpad.net/ubuntu/+source/jbig2dec/0.12+20150918-1ubuntu0.1
https://launchpad.net/ubuntu/+source/jbig2dec/0.11+20120125-1ubuntu1.1