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Security Advisory glibc security update

Advisory: RHSA-2005:261-06
Type: Security Advisory
Severity: Low
Issued on: 2005-04-28
Last updated on: 2005-04-28
Affected Products: Red Hat Enterprise Linux AS (v. 2.1)
Red Hat Enterprise Linux ES (v. 2.1)
Red Hat Enterprise Linux WS (v. 2.1)
Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor
CVEs (cve.mitre.org): CVE-2004-0968
CVE-2004-1382
CVE-2004-1453

Details

Updated glibc packages that address several bugs are now available.

This update has been rated as having low security impact by the Red Hat
Security Response Team.

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
(cve.mitre.org) has assigned the name CAN-2004-0968 and CAN-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 (cve.mitre.org) has assigned
the name CAN-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.


Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise/

Updated packages

Red Hat Enterprise Linux AS (v. 2.1)

SRPMS:
glibc-2.2.4-32.20.src.rpm
File outdated by:  RHEA-2006:0279
    MD5: 86c397f7614278f57b9b814d6adedace
 
IA-32:
glibc-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: 5b601e85eba293c52d9fe15d8e766a12
glibc-2.2.4-32.20.i686.rpm
File outdated by:  RHEA-2006:0279
    MD5: e1c21533e3d86da39390e93d4b93060e
glibc-common-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: b7eda3e6a3b7f24813415c692bde5cff
glibc-devel-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: 0b39ef1f661609a0346675b1877a6288
glibc-profile-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: 88ed7d4adfcf4627478367a253a65989
nscd-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: b3d6d4389676fc0652277f490d47dfec
 
IA-64:
glibc-2.2.4-32.20.ia64.rpm
File outdated by:  RHEA-2006:0279
    MD5: 158103afa78aec998e3db120d245cd37
glibc-common-2.2.4-32.20.ia64.rpm
File outdated by:  RHEA-2006:0279
    MD5: 321c25cf3605db040fef49a79c443618
glibc-devel-2.2.4-32.20.ia64.rpm
File outdated by:  RHEA-2006:0279
    MD5: a5eb76dc9b8dbcf8cfd6938d1a957977
glibc-profile-2.2.4-32.20.ia64.rpm
File outdated by:  RHEA-2006:0279
    MD5: b24148c15938f32f7a5f7df0773eb092
nscd-2.2.4-32.20.ia64.rpm
File outdated by:  RHEA-2006:0279
    MD5: 925478d53517e5cd62762f608b4e26f8
 
Red Hat Enterprise Linux ES (v. 2.1)

SRPMS:
glibc-2.2.4-32.20.src.rpm
File outdated by:  RHEA-2006:0279
    MD5: 86c397f7614278f57b9b814d6adedace
 
IA-32:
glibc-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: 5b601e85eba293c52d9fe15d8e766a12
glibc-2.2.4-32.20.i686.rpm
File outdated by:  RHEA-2006:0279
    MD5: e1c21533e3d86da39390e93d4b93060e
glibc-common-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: b7eda3e6a3b7f24813415c692bde5cff
glibc-devel-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: 0b39ef1f661609a0346675b1877a6288
glibc-profile-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: 88ed7d4adfcf4627478367a253a65989
nscd-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: b3d6d4389676fc0652277f490d47dfec
 
Red Hat Enterprise Linux WS (v. 2.1)

SRPMS:
glibc-2.2.4-32.20.src.rpm
File outdated by:  RHEA-2006:0279
    MD5: 86c397f7614278f57b9b814d6adedace
 
IA-32:
glibc-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: 5b601e85eba293c52d9fe15d8e766a12
glibc-2.2.4-32.20.i686.rpm
File outdated by:  RHEA-2006:0279
    MD5: e1c21533e3d86da39390e93d4b93060e
glibc-common-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: b7eda3e6a3b7f24813415c692bde5cff
glibc-devel-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: 0b39ef1f661609a0346675b1877a6288
glibc-profile-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: 88ed7d4adfcf4627478367a253a65989
nscd-2.2.4-32.20.i386.rpm
File outdated by:  RHEA-2006:0279
    MD5: b3d6d4389676fc0652277f490d47dfec
 
Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor

SRPMS:
glibc-2.2.4-32.20.src.rpm
File outdated by:  RHEA-2006:0279
    MD5: 86c397f7614278f57b9b814d6adedace
 
IA-64:
glibc-2.2.4-32.20.ia64.rpm
File outdated by:  RHEA-2006:0279
    MD5: 158103afa78aec998e3db120d245cd37
glibc-common-2.2.4-32.20.ia64.rpm
File outdated by:  RHEA-2006:0279
    MD5: 321c25cf3605db040fef49a79c443618
glibc-devel-2.2.4-32.20.ia64.rpm
File outdated by:  RHEA-2006:0279
    MD5: a5eb76dc9b8dbcf8cfd6938d1a957977
glibc-profile-2.2.4-32.20.ia64.rpm
File outdated by:  RHEA-2006:0279
    MD5: b24148c15938f32f7a5f7df0773eb092
nscd-2.2.4-32.20.ia64.rpm
File outdated by:  RHEA-2006:0279
    MD5: 925478d53517e5cd62762f608b4e26f8
 

Bugs fixed (see bugzilla for more information)

140068 - [RHAS2.1] CAN-2004-0968 temporary file vulnerabilities in catchsegv script
140487 - [RHAS2.1] Bad declaration of __syscall_poll can cause bogus values for timeout to be passed to the kernel
148800 - CAN-2004-1382 insecure temporary file usage
148814 - CAN-2004-1453 Information leak with LD_DEBUG


References


Keywords

catchsegv, glibc, glibcbug, LD_DEBUG


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