Joined: 12 May 2004
|Posted: Wed Feb 17, 2016 4:26 pm Post subject: [ GLSA 201602-02 ] GNU C Library
|Gentoo Linux Security Advisory
Title: GNU C Library: Multiple vulnerabilities (GLSA 201602-02)
Exploitable: local, remote
Date: February 17, 2016
Bug(s): #516884, #517082, #521932, #529982, #532874, #538090, #538814, #540070, #541246, #541542, #547296, #552692, #574880
Multiple vulnerabilities have been found in the GNU C library, the
worst allowing for remote execution of arbitrary code.
The GNU C library is the standard C library used by Gentoo Linux
Vulnerable: < 2.21-r2
Unaffected: >= 2.21-r2
Architectures: All supported architectures
Multiple vulnerabilities have been discovered in the GNU C Library:
Please review the CVEs referenced below for additional vulnerabilities
- The Google Security Team and Red Hat discovered a stack-based buffer
overflow in the send_dg() and send_vc() functions due to a buffer
mismanagement when getaddrinfo() is called with AF_UNSPEC
- The strftime() function access invalid memory when passed
out-of-range data, resulting in a crash (CVE-2015-8776).
- An integer overflow was found in the __hcreate_r() function
- Multiple unbounded stack allocations were found in the catopen()
that had already been fixed in previous versions of sys-libs/glibc, for
which we have not issued a GLSA before.
A remote attacker could exploit any application which performs host name
resolution using getaddrinfo() in order to execute arbitrary code or
crash the application. The other vulnerabilities can possibly be
exploited to cause a Denial of Service or leak information.
A number of mitigating factors for CVE-2015-7547 have been identified.
Please review the upstream advisory and references below.
All GNU C Library users should upgrade to the latest version:
It is important to ensure that no running process uses the old glibc
|# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-libs/glibc-2.21-r2"
anymore. The easiest way to achieve that is by rebooting the machine
after updating the sys-libs/glibc package.
Note: Should you run into compilation failures while updating, please
see bug 574948.
Google Online Security Blog: "CVE-2015-7547: glibc getaddrinfo
stack-based buffer overflow"
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum