UnZip "dot dot" directory traversal
| unzip-dotdot-directory-traversal (12004) |  Medium Risk |
Description:
UnZip could allow a remote attacker to overwrite or create files on the system, caused by improper filtering of file names. By creating a zip file in an archive with a file name containing a modified "dot dot" sequence that contains invalid characters between the dots, a remote attacker could traverse directories and create new files or overwrite any known file in any directory on the system, once the victim attempts to unzip the zipped file. An attacker could exploit this vulnerability by hosting the malicious file on a Web site or by sending it to the victim as an email attachment.
Platforms Affected:
- Conectiva, Linux 7.0
- Conectiva, Linux 8.0
- Conectiva, Linux 9.0
- Debian, Debian Linux 3.0
- FreeBSD, FreeBSD
- Gentoo, Linux
- Immunix, Immunix OS 7+-beta
- Info-ZIP, UnZip 5.50
- MandrakeSoft, Mandrake Linux 8.2 PPC
- MandrakeSoft, Mandrake Linux 8.2
- MandrakeSoft, Mandrake Linux 9.0
- MandrakeSoft, Mandrake Linux 9.1
- MandrakeSoft, Mandrake Linux 9.1 PPC
- MandrakeSoft, Mandrake Linux Corporate Server 2.1 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 2.1
- MandrakeSoft, Mandrake Multi Network Firewall 8.2
- OpenPKG, OpenPKG 1.1
- OpenPKG, OpenPKG 1.2
- OpenPKG, OpenPKG CURRENT
- RedHat, Enterprise Linux 2.1 ES
- RedHat, Enterprise Linux 2.1 AW
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Enterprise Linux 2.1 WS
- RedHat, Linux 7
- RedHat, Linux 7.1
- RedHat, Linux 7.1 for iSeries
- RedHat, Linux 7.1 for pSeries
- RedHat, Linux 7.2
- RedHat, Linux 7.3
- RedHat, Linux 8.0
- RedHat, Linux 9.0
- RedHat, Linux Advanced Workstation 2.1 Itanium
- SCO, Caldera OpenLinux Server 3.1.1
- SCO, Caldera OpenLinux Workstation 3.1.1
- Slackware, Slackware Linux 9.0
- Slackware, Slackware Linux current
- Turbolinux, Turbolinux 7 Server
- Turbolinux, Turbolinux 7 Workstation
- Turbolinux, Turbolinux 8 Server
- Turbolinux, Turbolinux 8 Workstation
- Turbolinux, Turbolinux Advanced Server 6
- Turbolinux, Turbolinux Server 6.1
- Turbolinux, Turbolinux Server 6.5
- Turbolinux, Turbolinux Workstation 6.0
Remedy:
For Red Hat Linux:
Upgrade to the latest unzip package, as listed below. Refer to RHSA-2003:199-14 for more information. See References.
Red Hat 7.1 for iSeries and pSeries, 7.2, and 7.3: 5.50-31 or later
Red Hat 8.0: 5.50-32 or later
Red Hat 9: 5.50-33 or later
For Red Hat Linux containing the unzip package:
Upgrade to the latest unzip package, as listed below. Refer to RHSA-2003:200-07 for more information. See References.
Red Hat Enterprise Linux AS (v. 2.1), ES (v. 2.1), WS (v. 2.1): 5.50-13 or later
Advanced Workstation 2.1 for the Itanium Processor: 5.50-13 or later
For Conectiva Linux:
Upgrade to the latest unzip package, as listed below. Refer to Conectiva Linux Security Announcement CLSA-2003:724 for more information. See References.
Conectiva Linux 7.0: 5.50-1U70_3cl or later
Conectiva Linux 8: 5.50-1-1U80_3cl or later
Conectiva Linux 9: 5.50-1386OU90_2cl or later
For Immunix 7+:
Upgrade to the latest version of unzip (5.50-11_imnx_1 or later), as listed in Immunix Secured OS Security Advisory IMNX-2003-7+-017-01. See References.
For Turbolinux:
Upgrade to the latest unzip package (5.50-4 or later), as listed in Turbolinux Security Advisory TLSA-2003-42. See References.
For Mandrake Linux:
Upgrade to the latest unzip package, as listed below. Refer to MandrakeSoft Security Advisory MDKSA-2003:073-1 : unzip for more information. See References.
Mandrake Linux 8.2, 9.0, 9.1, Multi Network Firewall 8.2, and Corporate Server 2.1: 5.50-4.2mdk or later
For Gentoo Linux:
Upgrade to the latest version of unzip (5.50-r2 or later), as listed in Gentoo Linux Security Announcement 200307-02. See References.
For OpenPKG:
Upgrade to the latest infozip package, as listed below. Refer to OpenPKG Security Advisory OpenPKG-SA-2003.033-infozip for more information. See References.
OpenPKG CURRENT: 20030710-20030710 or later
OpenPKG 1.2: 1.2.0-1.2.1 or later
OpenPKG 1.1: 1.1.0-1.1.1 or later
For Debian GNU/Linux 3.0 (alias woody):
Upgrade to the latest unzip package (5.50-1woody2 or later), as listed in DSA-344-2. See References.
For Slackware Linux:
Upgrade to the latest infozip package, as listed below. Refer to slackware-security Mailing List, Mon, 25 Aug 2003 20:39:27 -0700 (PDT) for more information. See References.
Slackware Linux 9.0 and -current: 5.50 or later
For Caldera OpenLinux Server and Workstation 3.1.1:
Upgrade to the latest version of unzip (5.40-6MR or later), as listed in SCO Security Advisory CSSA-2003-031.0. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
File Manipulation
References:
- BugTraq Mailing List, Fri May 09 2003 - 17:39:24 CDT , unzip directory traversal revisited at http://archives.neohapsis.com/archives/bugtraq/2003-05/0113.html.
- CIAC Information Bulletin N-111, Red Hat Updated unzip Packages Fix Trojan Vulnerability at http://www.ciac.org/ciac/bulletins/n-111.shtml.
- Conectiva Linux Security Announcement CLSA-2003:672, unzip at http://distro.conectiva.com/atualizacoes/?id=a&anuncio=000672.
- Conectiva Linux Security Announcement CLSA-2003:724, unzip at http://distro.conectiva.com/atualizacoes/index.php?id=a&anuncio=000724.
- Gentoo Linux Security Announcement 200307-02, unzip at http://www.linuxsecurity.com/content/view/105186/104/. (From LinuxSecurity archive)
- Immunix Secured OS Security Advisory IMNX-2003-7+-017-01, unzip at http://lwn.net/Alerts/32575/.
- SCO Security Advisory CSSA-2003-031.0, OpenLinux: unzip directory traversal at ftp://ftp.sco.com/pub/security/OpenLinux/CSSA-2003-031.0.txt.
- slackware-security Mailing List, Mon, 25 Aug 2003 20:39:27 -0700 (PDT), unzip vulnerability patched at http://www.slackware.com/security/viewer.php?l=slackware-security&y=2003&m=slackware-security.357639.
- BID-7550: Info-ZIP UnZip Encoded Character Hostile Destination Path Vulnerability
- CVE-2003-0282: Directory traversal vulnerability in UnZip 5.50 allows attackers to overwrite arbitrary files via invalid characters between two . (dot) characters, which are filtered and result in a .. sequence.
- DSA-344: unzip -- directory traversal
- MDKSA-2003:073: Updated unzip packages fix vulnerability
- MDKSA-2003:073-1: Updated unzip packages fix vulnerability
- OpenPKG-SA-2003.033: infozip
- RHSA-2003-199: Updated unzip packages fix trojan vulnerability
- RHSA-2003-200: unzip security update
- RHSA-2003-218: Updated unzip and tar packages that fix vulnerabilities are now available
Reported:
May 09, 2003
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