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RHSA-2005:261

Vulnerability from csaf_redhat - Published: 2005-04-28 15:16 - Updated: 2025-11-21 17:28
Summary
Red Hat Security Advisory: glibc security update
Severity
Low
Notes
Topic: 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.
Details: 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.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2004-0968

The catchsegv script in glibc 2.3.2 and earlier allows local users to overwrite files via a symlink attack on temporary files.

Affected products
Product Identifier Version Remediation
Red Hat Enterprise Linux AS (Advanced Server) version 2.1
Red Hat / Red Hat Enterprise Linux
 cpe:/o:redhat:enterprise_linux:2.1::as —
Vendor Fix fix
Red Hat Enterprise Linux ES version 2.1
Red Hat / Red Hat Enterprise Linux
 cpe:/o:redhat:enterprise_linux:2.1::es —
Vendor Fix fix
Red Hat Enterprise Linux WS version 2.1
Red Hat / Red Hat Enterprise Linux
 cpe:/o:redhat:enterprise_linux:2.1::ws —
Vendor Fix fix
Red Hat Linux Advanced Workstation 2.1
Red Hat / Red Hat Enterprise Linux
 cpe:/o:redhat:enterprise_linux:2.1::aw —
Vendor Fix fix
Threats
Impact Low
CVE-2004-1382

The glibcbug script in glibc 2.3.4 and earlier allows local users to overwrite arbitrary files via a symlink attack on temporary files, a different vulnerability than CVE-2004-0968.

Affected products
Fixed 4 products, the same list as for CVE-2004-0968
Threats
Impact Low
CVE-2004-1453

GNU glibc 2.3.4 before 2.3.4.20040619, 2.3.3 before 2.3.3.20040420, and 2.3.2 before 2.3.2-r10 does not restrict the use of LD_DEBUG for a setuid program, which allows local users to gain sensitive information, such as the list of symbols used by the program.

Affected products
Fixed 4 products, the same list as for CVE-2004-0968
Threats
Impact Low
References
To clipboard 

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        "text": "The GNU libc packages (known as glibc) contain the standard C libraries\nused by applications.\n\nFlaws in the catchsegv and glibcbug scripts were discovered. A local user\ncould utilize these flaws to overwrite files via a symlink attack on\ntemporary files.  The Common Vulnerabilities and Exposures project\n(cve.mitre.org) has assigned the name CAN-2004-0968 and CAN-2004-1382 to\nthese issues.\n\nIt was discovered that the use of LD_DEBUG and LD_SHOW_AUXV were not\nrestricted for a setuid program.  A local user could utilize this flaw to\ngain information, such as the list of symbols used by the program.  The\nCommon Vulnerabilities and Exposures project (cve.mitre.org) has assigned\nthe name  CAN-2004-1453 to this issue.\n\nThis erratum also addresses the following bugs in the GNU C Library:\n- Now avoids calling sigaction (SIGPIPE, ...) in syslog implementation\n- Fixed poll on Itanium\n- Now allows setenv/putenv in shared library constructors\n\nUsers of glibc are advised to upgrade to these erratum packages that remove\nthe unecessary glibcbug script and contain backported patches to correct\nthese other issues.",
        "title": "Details"
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}



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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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