libvdpau (1.1-1ubuntu1) wily; urgency=medium
* SECURITY UPDATE: privilege escalation when used in setuid or setgid
applications
- debian/patches/CVE-2015-5xxx.patch: use secure_getenv and protect
against directory traversal in configure.ac, src/Makefile.am,
src/mesa_dri2.c, src/util.h, src/vdpau_wrapper.c,
trace/vdpau_trace.cpp.
- CVE-2015-5198
- CVE-2015-5199
- CVE-2015-5200
-- Marc Deslauriers <marc.deslauri...@ubuntu.com> Wed, 02 Sep 2015
08:38:06 -0400
** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2015-5198
** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2015-5199
** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2015-5200
** Changed in: libvdpau (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1490826
Title:
[CVE] NVIDIA's VDPAU Library Exposed To Security Issue
Status in libvdpau package in Ubuntu:
Fix Released
Bug description:
From a Phoronix post:
http://lists.x.org/archives/xorg-announce/2015-August/002630.html
http://anzwix.com/a/VDPAU/UseSecuregetenv3ToImproveSecurity
NVIDIA released the libvdpau 1.1.1 library today to fix three new CVE
security issues.
Aaron Plattner of NVIDIA announced today:
libvdpau versions 1.1 and earlier, when used in setuid or setgid
applications, contain vulnerabilities related to environment variable handling
that could allow an attacker to execute arbitrary code or overwrite arbitrary
files. See CVE-2015-5198, CVE-2015-5199, and CVE-2015-5200 for more details.
This release uses the secure_getenv() function, when available, to fix
these problems. On platforms where secure_getenv() is not available,
the VDPAU environment variables will not be honored by the library.
The secure_getenv() call is used now rather than getenv() for
obtaining the environment variable values of DRI_PRIME, VDPAU_DRIVER,
VDPAU_DRIVER_PATH, VDPAU_TRACE, and VDPAU_TRACE_FILE, per this commit.
The secure_getenv() call has been present since glibc 2.17 is GNU-
specific and will return null in cases where secure execution is
required, details via the man page.
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