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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Update for glibc RHSA-2015:0327-01
Summary:The remote host is missing an update for the 'glibc'; package(s) announced via the referenced advisory.
The remote host is missing an update for the 'glibc'
package(s) announced via the referenced advisory.

Vulnerability Insight:
The glibc packages provide the standard C libraries (libc), POSIX thread
libraries (libpthread), standard math libraries (libm), and the Name Server
Caching Daemon (nscd) used by multiple programs on the system. Without
these libraries, the Linux system cannot function correctly.

An out-of-bounds read flaw was found in the way glibc's iconv() function
converted certain encoded data to UTF-8. An attacker able to make an
application call the iconv() function with a specially crafted argument
could use this flaw to crash that application. (CVE-2014-6040)

It was found that the files back end of Name Service Switch (NSS) did not
isolate iteration over an entire database from key-based look-up API calls.
An application performing look-ups on a database while iterating over it
could enter an infinite loop, leading to a denial of service.

This update also fixes the following bugs:

* Due to problems with buffer extension and reallocation, the nscd daemon
terminated unexpectedly with a segmentation fault when processing long
netgroup entries. With this update, the handling of long netgroup entries
has been corrected and nscd no longer crashes in the described scenario.

* If a file opened in append mode was truncated with the ftruncate()
function, a subsequent ftell() call could incorrectly modify the file
offset. This update ensures that ftell() modifies the stream state only
when it is in append mode and the buffer for the stream is not empty.

* A defect in the C library headers caused builds with older compilers to
generate incorrect code for the btowc() function in the older compatibility
C++ standard library. Applications calling btowc() in the compatibility C++
standard library became unresponsive. With this update, the C library
headers have been corrected, and the compatibility C++ standard library
shipped with Red Hat Enterprise Linux has been rebuilt. Applications that
rely on the compatibility C++ standard library no longer hang when calling
btowc(). (BZ#1120490)

* Previously, when using netgroups and the nscd daemon was set up to cache
netgroup information, the sudo utility denied access to valid users. The
bug in nscd has been fixed, and sudo now works in netgroups as
expected. (BZ#1080766)

Users of glibc are advised to upgrade to these updated packages, which fix
these issues.

Affected Software/OS:
glibc on Red Hat Enterprise Linux Server (v. 7)

Please Install the Updated Packages.

CVSS Score:

CVSS Vector:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2014-6040
BugTraq ID: 69472
Debian Security Information: DSA-3142 (Google Search)
Common Vulnerability Exposure (CVE) ID: CVE-2014-8121
BugTraq ID: 73038
Debian Security Information: DSA-3480 (Google Search)
RedHat Security Advisories: RHSA-2015:0327
SuSE Security Announcement: SUSE-SU-2015:1424 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:0470 (Google Search)
CopyrightCopyright (C) 2015 Greenbone Networks GmbH

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