Scientific Linux Security Update : glibc on SL7.x x86_64

This script is Copyright (C) 2015 Tenable Network Security, Inc.

Synopsis :

The remote Scientific Linux host is missing one or more security

Description :

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.

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. (CVE-2014-8121)

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

- 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 Scientific Linux has been rebuilt.
Applications that rely on the compatibility C++ standard
library no longer hang when calling btowc().

- 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.

See also :

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 5.0

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 82250 ()

Bugtraq ID:

CVE ID: CVE-2014-6040

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