CVE-2017-6312

Integer overflow in io-ico.c in gdk-pixbuf allows context-dependent attackers to cause a denial of service (segmentation fault and application crash) via a crafted image entry offset in an ICO file, which triggers an out-of-bounds read, related to compiler optimizations.

Integer overflow in io-ico.c in gdk-pixbuf allows context-dependent attackers to cause a denial of service (segmentation fault and application crash) via a crafted image entry offset in an ICO file, which triggers an out-of-bounds read, related to compiler optimizations.

Integer overflow in io-ico.c in gdk-pixbuf allows context-dependent attackers to cause a denial of service (segmentation fault and application crash) via a crafted image entry offset in an ICO file, which triggers an out-of-bounds read, related to compiler optimizations.

JPEG gdk_pixbuf__jpeg_image_load_increment Code Execution Vulnerability (CVE-2017-2862).

tiff_image_parse Code Execution Vulnerability (CVE-2017-2870).

Ariel Zelivansky discovered that the GDK-PixBuf library did not properly handle printing certain error messages. If an user or automated system were tricked into opening a specially crafted image file, a remote attacker could use this flaw to cause GDK-PixBuf to crash, resulting in a denial of service (CVE-2017-6311).

Out-of-bounds read on io-ico.c (CVE-2017-6312).

A dangerous integer underflow in io-icns.c (CVE-2017-6313).

Infinite loop in io-tiff.c (CVE-2017-6314).

Note, the CVE-2017-2862, CVE-2017-2870, and CVE-2017-6311 issues only affected Mageia 5.

These are all security issues fixed in the gdk-pixbuf-devel-2.42.6-3.2 package on the GA media of openSUSE Tumbleweed.

This update for gdk-pixbuf fixes the following issues:

• CVE-2017-2862: JPEG gdk_pixbuf__jpeg_image_load_increment Code Execution Vulnerability (bsc#1048289)
• CVE-2017-2870: tiff_image_parse Code Execution Vulnerability (bsc#1048544)
• CVE-2017-6313: A dangerous integer underflow in io-icns.c (bsc#1027024)
• CVE-2017-6314: Infinite loop in io-tiff.c (bsc#1027025)
• CVE-2017-6312: Out-of-bounds read on io-ico.c (bsc#1027026)

This update for gtk2 provides the following fixes:

These security issues were fixed:

• CVE-2017-6312: Prevent integer overflow that allowed context-dependent attackers to cause a denial of service (segmentation fault and application crash) via a crafted image entry offset in an ICO file (bsc#1027026).
• CVE-2017-6314: The make_available_at_least function allowed context-dependent attackers to cause a denial of service (infinite loop) via a large TIFF file (bsc#1027025).
• CVE-2017-6313: Prevent integer underflow in the load_resources function that allowed context-dependent attackers to cause a denial of service (out-of-bounds read and program crash) via a crafted image entry size in an ICO file (bsc#1027024).
• CVE-2017-2862: Prevent heap overflow in the gdk_pixbuf__jpeg_image_load_increment function. A specially crafted jpeg file could have caused a heap overflow resulting in remote code execution (bsc#1048289)
• CVE-2017-2870: Prevent integer overflow in the tiff_image_parse functionality. A specially crafted tiff file could have caused a heap-overflow resulting in remote code execution (bsc#1048544).

This non-security issue was fixed:

• Prevent an infinite loop when a window is destroyed while traversed (bsc#1039465).

It was discoreved that GDK-PixBuf incorrectly handled certain gif images. An attacker could use this to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-1000422)

Ariel Zelivansky discovered that GDK-PixBuf incorrectly handled certain images. An attacker could use this to cause a denial of service. (CVE-2017-6312, CVE-2017-6313)

Ariel Zelivansky discovered that GDK-PixBuf incorrectly handled large TIFF files. An attacker could use this to cause a denial of service. (CVE-2017-6314)