Security update for libXfont
SUSE Security Update: Security update for libXfont
LibXFont was updated to fix security problems.
Following security issues were fixed:
- CVE-2015-1802: The bdf parser reads a count for the number of properties
defined in a font from the font file, and allocates arrays with entries
for each property based on that count. It never checked to see if that
count was negative, or large enough to overflow when multiplied by the
size
of the structures being allocated, and could thus allocate the wrong
buffer size, leading to out of bounds writes.
- CVE-2015-1803: If the bdf parser failed to parse the data for the bitmap
for any character, it would proceed with an invalid pointer to the
bitmap data and later crash when trying to read the bitmap from that
pointer.
- CVE-2015-1804: The bdf parser read metrics values as 32-bit integers,
but stored them into 16-bit integers. Overflows could occur in various
operations leading to out-of-bounds memory access.
| Announcement ID: | SUSE-SU-2015:0702-1 |
| Rating: | important |
| References: | #921978 |
| Affected Products: |
An update that fixes three vulnerabilities is now available.
Description:
LibXFont was updated to fix security problems.
Following security issues were fixed:
- CVE-2015-1802: The bdf parser reads a count for the number of properties
defined in a font from the font file, and allocates arrays with entries
for each property based on that count. It never checked to see if that
count was negative, or large enough to overflow when multiplied by the
size
of the structures being allocated, and could thus allocate the wrong
buffer size, leading to out of bounds writes.
- CVE-2015-1803: If the bdf parser failed to parse the data for the bitmap
for any character, it would proceed with an invalid pointer to the
bitmap data and later crash when trying to read the bitmap from that
pointer.
- CVE-2015-1804: The bdf parser read metrics values as 32-bit integers,
but stored them into 16-bit integers. Overflows could occur in various
operations leading to out-of-bounds memory access.
Patch Instructions:
To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:
- SUSE Linux Enterprise Software Development Kit 12:
zypper in -t patch SUSE-SLE-SDK-12-2015-161=1 - SUSE Linux Enterprise Server 12:
zypper in -t patch SUSE-SLE-SERVER-12-2015-161=1 - SUSE Linux Enterprise Desktop 12:
zypper in -t patch SUSE-SLE-DESKTOP-12-2015-161=1
To bring your system up-to-date, use "zypper patch".
Package List:
- SUSE Linux Enterprise Software Development Kit 12 (ppc64le s390x x86_64):
- libXfont-debugsource-1.4.7-4.1
- libXfont-devel-1.4.7-4.1
- SUSE Linux Enterprise Server 12 (ppc64le s390x x86_64):
- libXfont-debugsource-1.4.7-4.1
- libXfont1-1.4.7-4.1
- libXfont1-debuginfo-1.4.7-4.1
- SUSE Linux Enterprise Desktop 12 (x86_64):
- libXfont-debugsource-1.4.7-4.1
- libXfont1-1.4.7-4.1
- libXfont1-debuginfo-1.4.7-4.1
References:
- https://www.suse.com/security/cve/CVE-2015-1802.html
- https://www.suse.com/security/cve/CVE-2015-1803.html
- https://www.suse.com/security/cve/CVE-2015-1804.html
- https://bugzilla.suse.com/921978