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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2005:261

The remote host is missing updates announced in
advisory RHSA-2005:261.

The GNU libc packages (known as glibc) contain the standard C libraries
used by applications.

Flaws in the catchsegv and glibcbug scripts were discovered. A local user
could utilize these flaws to overwrite files via a symlink attack on
temporary files. The Common Vulnerabilities and Exposures project
( has assigned the name CVE-2004-0968 and CVE-2004-1382 to
these issues.

It was discovered that the use of LD_DEBUG and LD_SHOW_AUXV were not
restricted for a setuid program. A local user could utilize this flaw to
gain information, such as the list of symbols used by the program. The
Common Vulnerabilities and Exposures project ( has assigned
the name CVE-2004-1453 to this issue.

This erratum also addresses the following bugs in the GNU C Library:
- - Now avoids calling sigaction (SIGPIPE, ...) in syslog implementation
- - Fixed poll on Itanium
- - Now allows setenv/putenv in shared library constructors

Users of glibc are advised to upgrade to these erratum packages that remove
the unecessary glibcbug script and contain backported patches to correct
these other issues.

Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

Risk factor : Medium

CVSS Score:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2004-0968
BugTraq ID: 11286
Debian Security Information: DSA-636 (Google Search)
XForce ISS Database: script-temporary-file-overwrite(17583)
Common Vulnerability Exposure (CVE) ID: CVE-2004-1382
Bugtraq: 20041028 [USN-4-1] Standard C library script vulnerabilities (Google Search)
Common Vulnerability Exposure (CVE) ID: CVE-2004-1453
BugTraq ID: 10963
XForce ISS Database: glibc-suid-info-disclosure(17006)
CopyrightCopyright (c) 2005 E-Soft Inc.

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