gzip -N command directory traversal

gzip-n-directory-traversal (20199)

Medium Risk

Description:

gzip (GNU zip) could allow a remote attacker to traverse directories on system. If an attacker could persuade a user to open a malicious compressed file using the 'gunzip -N' command, the attacker could traverse directories and create or overwrite files on the system with the privileges of the victim.

Platforms Affected:

• Canonical, Ubuntu 4.10
• Canonical, Ubuntu 5.04
• Conectiva, Linux 10
• Conectiva, Linux 9.0
• Debian, Debian Linux 3.0
• Debian, Debian Linux 3.1
• Gentoo, Linux
• GNU, gzip 1.2.4
• GNU, gzip 1.2.4a
• GNU, gzip 1.3
• GNU, gzip 1.3.3
• MandrakeSoft, Mandrake Linux 10.0
• MandrakeSoft, Mandrake Linux 10.0 AMD64
• MandrakeSoft, Mandrake Linux 10.1
• MandrakeSoft, Mandrake Linux 10.1 X86_64
• MandrakeSoft, Mandrake Linux LE2005
• MandrakeSoft, Mandrake Linux LE2005 X86_64
• MandrakeSoft, Mandrake Linux Corporate Server 2.1
• MandrakeSoft, Mandrake Linux Corporate Server 2.1 X86_64
• MandrakeSoft, Mandrake Linux Corporate Server 3.0
• MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
• OpenPKG, OpenPKG 2.2
• OpenPKG, OpenPKG 2.3
• OpenPKG, OpenPKG CURRENT
• RedHat, Enterprise Linux 2.1 WS
• RedHat, Enterprise Linux 2.1 AS
• RedHat, Enterprise Linux 2.1 ES
• RedHat, Enterprise Linux 3 ES
• RedHat, Enterprise Linux 3 WS
• RedHat, Enterprise Linux 3 Desktop
• RedHat, Enterprise Linux 3 AS
• RedHat, Enterprise Linux 4 ES
• RedHat, Enterprise Linux 4 WS
• RedHat, Enterprise Linux 4 Desktop
• RedHat, Enterprise Linux 4 AS
• RedHat, Linux Advanced Workstation 2.1 Itanium
• Sun, Solaris 10 SPARC
• Sun, Solaris 10 x86
• Sun, Solaris 8 x86
• Sun, Solaris 8 SPARC
• Sun, Solaris 9 SPARC
• Sun, Solaris 9 x86
• Turbolinux, Turbolinux 10 Desktop
• Turbolinux, Turbolinux 10 F...
• Turbolinux, Turbolinux 10 Server
• Turbolinux, Turbolinux 7 Server
• Turbolinux, Turbolinux 7 Workstation
• Turbolinux, Turbolinux 8 Server
• Turbolinux, Turbolinux 8 Workstation
• Turbolinux, Turbolinux Home
• Turbolinux, Turbolinux Appliance Server 1.0 Hosting Ed
• Turbolinux, Turbolinux Appliance Server 1.0 Workgroup Ed

Remedy:

Apply the patch for this vulnerability, available from the Debian Bug report 305255. See References.

For Debian GNU/Linux 3.1 (Sarge):
Upgrade to the latest version of gzip (1.3.5-10 or later), as listed in DSA-752-1. See References.

For Conectiva Linux:
Upgrade to the latest version of gzip, as listed below. Refer to Conectiva Linux Announcement CLSA-2005:974 for more information. See References.

Conectiva Linux: 10.0: 1.3.5 or later
Conectiva Linux: 9.0: 1.3.3 or later

For Red Hat Linux:
Refer to RHSA-2005:357-19 for patch, upgrade, or suggested workaround information. See References.

For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 2005-05-05 for patch, upgrade, or suggested workaround information. See References.

For OpenPKG:
Refer to OpenPKG Security Advisory OpenPKG-SA-2005.009 for patch, upgrade, or suggested workaround information. See References.

For Ubuntu Linux:
Refer to USN-116-1 for patch, upgrade, or suggested workaround information. See References.

For Apple Mac OS X:
Apply Apple Security Update 2006-004, available from the Apple Web site. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

Consequences:

File Manipulation

References:

• Apple Security Update 2006-004, About Security Update 2006-004 at http://docs.info.apple.com/article.html?artnum=304063.
• BugTraq Mailing List, Wed Apr 20 2005 - 14:24:42 CDT , gzip directory traversal vulnerability at http://archives.neohapsis.com/archives/bugtraq/2005-04/0305.html.
• Conectiva Linux Security Announcement CLSA-2005:974, Security fixes for gzip at http://distro.conectiva.com/atualizacoes/index.php?id=a&anuncio=000974.
• Debian Bug report 305255, gzip: dir traversal bug when using "gunzip -N" at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=305255.
• FreeBSD Security Advisory FreeBSD-SA-05:11.gzip, gzip directory traversal and permission race vulnerabilities at ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-05:11.gzip.asc.
• gzip Home page, The gzip home page at http://www.gzip.org/.
• Sun Alert ID: 101816, Security Vulnerabilities in the gzip(1) Command at http://sunsolve.sun.com/search/document.do?assetkey=1-26-101816-1.
• BID-13290: GNU GZip Filename Directory Traversal Vulnerability
• BID-19289: Apple Mac OS X Multiple Security Vulnerabilities
• CVE-2005-1228: Directory traversal vulnerability in gunzip -N in gzip 1.2.4 through 1.3.5 allows remote attackers to write to arbitrary directories via a .. (dot dot) in the original filename within a compressed file.
• DSA-752: gzip -- several vulnerabilities
• GLSA-200505-05: gzip: Multiple vulnerabilities
• MDKSA-2005:092: Updated gzip packages fix several vulnerabilities
• OpenPKG-SA-2005.009: gzip
• OpenPKG-SA-2005.010: OpenPKG
• OSVDB ID: 15721: gzip -N Option Traversal Arbitrary File Write
• RHSA-2005-357: gzip security update
• SA15047: gzip Directory Traversal Vulnerability
• SA21253: Mac OS X Security Update Fixes Multiple Vulnerabilities

Reported:

Apr 20, 2005

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For corrections or additions please email xforce@iss.net

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