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Vulnerability of libtiff: buffer overflow of gif2tiff

Synthesis of the vulnerability 

An attacker can generate a buffer overflow in gif2tiff of libtiff, in order to trigger a denial of service, and possibly to execute code.
Vulnerable products: Debian, Fedora, Junos Space, LibTIFF, openSUSE, Solaris, RHEL, Slackware, Ubuntu.
Severity of this weakness: 2/4.
Creation date: 27/08/2013.
Références of this bulletin: 996468, BID-62019, CVE-2013-4244, DSA-2744-1, FEDORA-2013-15673, FEDORA-2013-15679, FEDORA-2014-6831, FEDORA-2014-6837, JSA11023, MDVSA-2013:224, openSUSE-SU-2013:1482-1, openSUSE-SU-2013:1484-1, RHSA-2014:0222-01, RHSA-2014:0223-01, SSA:2013-290-01, USN-2205-1, VIGILANCE-VUL-13320.

Description of the vulnerability 

The gif2tiff tool of the libtiff suite converts a GIF image to a TIFF image.

However, if the size of GIF data is greater than the size of the storage array, an overflow occurs.

An attacker can therefore generate a buffer overflow in gif2tiff of libtiff, in order to trigger a denial of service, and possibly to execute code.
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This computer threat impacts software or systems such as Debian, Fedora, Junos Space, LibTIFF, openSUSE, Solaris, RHEL, Slackware, Ubuntu.

Our Vigil@nce team determined that the severity of this computer vulnerability alert is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this cybersecurity weakness.

Solutions for this threat 

libtiff: patch for gif2tiff.
A patch is available in information sources.

Debian: new tiff packages.
New packages are available:
  tiff 3.9.4-5+squeeze10
  tiff 4.0.2-6+deb7u2

Fedora: new libtiff packages.
New packages are available:
  libtiff-4.0.3-9.fc18
  libtiff-4.0.3-9.fc19

Fedora: new mingw-libtiff packages.
New packages are available:
  Fedora 19: mingw-libtiff 4.0.3-4.fc19
  Fedora 20: mingw-libtiff 4.0.3-4.fc20

Junos Space: version 20.1R1.
The version 20.1R1 is fixed:
  https://www.juniper.net/support/downloads/

Mandriva: new libtiff packages.
New packages are available:
  libtiff-4.0.1-3.4.mbs1

openSUSE: new tiff packages.
New packages are available:
  openSUSE 11.4 : tiff-3.9.4-42.1
  openSUSE 12.2 : tiff-4.0.2-1.20.1
  openSUSE 12.3 : tiff-4.0.3-2.8.1

RHEL 5: new libtiff packages.
New packages are available:
  RHEL 5: libtiff 3.8.2-19.el5_10

RHEL 6.5: new libtiff packages.
New packages are available:
  RHEL 6: libtiff 3.9.4-10.el6_5

Slackware: new libtiff packages.
New packages are available:
ftp://ftp.slackware.com/pub/slackware/slackware-12.1/patches/packages/libtiff-3.9.7-i486-1_slack12.1.tgz
ftp://ftp.slackware.com/pub/slackware/slackware-12.2/patches/packages/libtiff-3.9.7-i486-1_slack12.2.tgz
ftp://ftp.slackware.com/pub/slackware/slackware-13.0/patches/packages/libtiff-3.9.7-i486-1_slack13.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-13.0/patches/packages/libtiff-3.9.7-x86_64-1_slack13.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware-13.1/patches/packages/libtiff-3.9.7-i486-1_slack13.1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-13.1/patches/packages/libtiff-3.9.7-x86_64-1_slack13.1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-13.37/patches/packages/libtiff-3.9.7-i486-1_slack13.37.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-13.37/patches/packages/libtiff-3.9.7-x86_64-1_slack13.37.txz
ftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/libtiff-3.9.7-i486-1_slack14.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-14.0/patches/packages/libtiff-3.9.7-x86_64-1_slack14.0.txz

Solaris 11.2: patch for LibTIFF.
A patch is available:
  https://updates.oracle.com/download/19298012.html

Ubuntu: new libtiff packages.
New packages are available:
  Ubuntu 14.04 LTS: libtiff5 4.0.3-7ubuntu0.1
  Ubuntu 13.10: libtiff5 4.0.2-4ubuntu3.1
  Ubuntu 12.10: libtiff5 4.0.2-1ubuntu2.3
  Ubuntu 12.04 LTS: libtiff4 3.9.5-2ubuntu1.6
  Ubuntu 10.04 LTS: libtiff4 3.9.2-2ubuntu0.14
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