Executive Summary

Summary
Title sharutils security update
Informations
Name RHSA-2005:377 First vendor Publication 2005-04-26
Vendor RedHat Last vendor Modification 2005-04-26
Severity (Vendor) Low Revision 01

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

An updated sharutils package is now available.

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

2. Problem description:

The sharutils package contains a set of tools for encoding and decoding packages of files in binary or text format.

A stack based overflow bug was found in the way shar handles the -o option. If a user can be tricked into running a specially crafted command, it could lead to arbitrary code execution. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-1772 to this issue. Please note that this issue does not affect Red Hat Enterprise Linux 4.

Two buffer overflow bugs were found in sharutils. If an attacker can place a malicious 'wc' command on a victim's machine, or trick a victim into running a specially crafted command, it could lead to arbitrary code execution. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-1773 to this issue.

A bug was found in the way unshar creates temporary files. A local user could use symlinks to overwrite arbitrary files the victim running unshar has write access to. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0990 to this issue.

All users of sharutils should upgrade to this updated package, which includes backported fixes to correct these issues.

3. 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/

4. Bug IDs fixed (http://bugzilla.redhat.com/):

152571 - CAN-2004-1772 buffer overflow with -o option 152573 - CAN-2004-1773 Buffer overflows in unshar 154049 - CAN-2005-0990 insecure temp file usage

5. RPMs required:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

SRPMS: ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/sharutils-4.2.1-8.9.x.src.rpm 4ff9ccec228d473e8983f60cec4f7bba sharutils-4.2.1-8.9.x.src.rpm

i386: a11c9f7ce6ec7e339554f88dd586ca53 sharutils-4.2.1-8.9.x.i386.rpm

ia64: c80d5a08b52b452b2c11cb7b0dffc59b sharutils-4.2.1-8.9.x.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS: ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/sharutils-4.2.1-8.9.x.src.rpm 4ff9ccec228d473e8983f60cec4f7bba sharutils-4.2.1-8.9.x.src.rpm

ia64: c80d5a08b52b452b2c11cb7b0dffc59b sharutils-4.2.1-8.9.x.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS: ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/sharutils-4.2.1-8.9.x.src.rpm 4ff9ccec228d473e8983f60cec4f7bba sharutils-4.2.1-8.9.x.src.rpm

i386: a11c9f7ce6ec7e339554f88dd586ca53 sharutils-4.2.1-8.9.x.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS: ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/sharutils-4.2.1-8.9.x.src.rpm 4ff9ccec228d473e8983f60cec4f7bba sharutils-4.2.1-8.9.x.src.rpm

i386: a11c9f7ce6ec7e339554f88dd586ca53 sharutils-4.2.1-8.9.x.i386.rpm

Red Hat Enterprise Linux AS version 3:

SRPMS: ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/sharutils-4.2.1-16.2.src.rpm 06a6b26786f3674b33280441417316c8 sharutils-4.2.1-16.2.src.rpm

i386: 3228571c5d375ff8ae96e6f7bf00a046 sharutils-4.2.1-16.2.i386.rpm

ia64: caa4872797cbb61cbb3d86c9bc6b9c17 sharutils-4.2.1-16.2.ia64.rpm

ppc: cf2564b18459cea9958c373396894ecc sharutils-4.2.1-16.2.ppc.rpm

s390: ee6bb67d0ea5d5d79539437f78f1128f sharutils-4.2.1-16.2.s390.rpm

s390x: 89114c0f739d46695fa787f3227a960c sharutils-4.2.1-16.2.s390x.rpm

x86_64: 337510c9c7925ed4e916b2733059d35d sharutils-4.2.1-16.2.x86_64.rpm

Red Hat Desktop version 3:

SRPMS: ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/sharutils-4.2.1-16.2.src.rpm 06a6b26786f3674b33280441417316c8 sharutils-4.2.1-16.2.src.rpm

i386: 3228571c5d375ff8ae96e6f7bf00a046 sharutils-4.2.1-16.2.i386.rpm

x86_64: 337510c9c7925ed4e916b2733059d35d sharutils-4.2.1-16.2.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS: ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/sharutils-4.2.1-16.2.src.rpm 06a6b26786f3674b33280441417316c8 sharutils-4.2.1-16.2.src.rpm

i386: 3228571c5d375ff8ae96e6f7bf00a046 sharutils-4.2.1-16.2.i386.rpm

ia64: caa4872797cbb61cbb3d86c9bc6b9c17 sharutils-4.2.1-16.2.ia64.rpm

x86_64: 337510c9c7925ed4e916b2733059d35d sharutils-4.2.1-16.2.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS: ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/sharutils-4.2.1-16.2.src.rpm 06a6b26786f3674b33280441417316c8 sharutils-4.2.1-16.2.src.rpm

i386: 3228571c5d375ff8ae96e6f7bf00a046 sharutils-4.2.1-16.2.i386.rpm

ia64: caa4872797cbb61cbb3d86c9bc6b9c17 sharutils-4.2.1-16.2.ia64.rpm

x86_64: 337510c9c7925ed4e916b2733059d35d sharutils-4.2.1-16.2.x86_64.rpm

Red Hat Enterprise Linux AS version 4:

SRPMS: ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/sharutils-4.2.1-22.2.src.rpm fb0f041f40c952667fa9e2415bb95481 sharutils-4.2.1-22.2.src.rpm

i386: 5528e7145b01b940474eed14da1a4bf5 sharutils-4.2.1-22.2.i386.rpm

ia64: 14609e1cd1f1d403ad562a27ff7090d0 sharutils-4.2.1-22.2.ia64.rpm

ppc: 83ae1ab7519ccd7905256da2319e006e sharutils-4.2.1-22.2.ppc.rpm

s390: f81531770bdd340cf5bd39ebed7c211b sharutils-4.2.1-22.2.s390.rpm

s390x: c68d22a3a01ad42d71b7d34b35a49896 sharutils-4.2.1-22.2.s390x.rpm

x86_64: 96fa0ac9f458ea3bed71aca056478e91 sharutils-4.2.1-22.2.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS: ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/sharutils-4.2.1-22.2.src.rpm fb0f041f40c952667fa9e2415bb95481 sharutils-4.2.1-22.2.src.rpm

i386: 5528e7145b01b940474eed14da1a4bf5 sharutils-4.2.1-22.2.i386.rpm

x86_64: 96fa0ac9f458ea3bed71aca056478e91 sharutils-4.2.1-22.2.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS: ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/sharutils-4.2.1-22.2.src.rpm fb0f041f40c952667fa9e2415bb95481 sharutils-4.2.1-22.2.src.rpm

i386: 5528e7145b01b940474eed14da1a4bf5 sharutils-4.2.1-22.2.i386.rpm

ia64: 14609e1cd1f1d403ad562a27ff7090d0 sharutils-4.2.1-22.2.ia64.rpm

x86_64: 96fa0ac9f458ea3bed71aca056478e91 sharutils-4.2.1-22.2.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS: ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/sharutils-4.2.1-22.2.src.rpm fb0f041f40c952667fa9e2415bb95481 sharutils-4.2.1-22.2.src.rpm

i386: 5528e7145b01b940474eed14da1a4bf5 sharutils-4.2.1-22.2.i386.rpm

ia64: 14609e1cd1f1d403ad562a27ff7090d0 sharutils-4.2.1-22.2.ia64.rpm

x86_64: 96fa0ac9f458ea3bed71aca056478e91 sharutils-4.2.1-22.2.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2005-377.html

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:11093
 
Oval ID: oval:org.mitre.oval:def:11093
Title: Multiple buffer overflows in sharutils 4.2.1 and earlier may allow attackers to execute arbitrary code via (1) long output from wc to shar, or (2) unknown vectors in unshar.
Description: Multiple buffer overflows in sharutils 4.2.1 and earlier may allow attackers to execute arbitrary code via (1) long output from wc to shar, or (2) unknown vectors in unshar.
Family: unix Class: vulnerability
Reference(s): CVE-2004-1773
 Version: 5
Platform(s): Red Hat Enterprise Linux 3
CentOS Linux 3
Red Hat Enterprise Linux 4
CentOS Linux 4
Oracle Linux 4
 Product(s):
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:11722
 
Oval ID: oval:org.mitre.oval:def:11722
Title: Stack-based buffer overflow in shar in GNU sharutils 4.2.1 allows local users to execute arbitrary code via a long -o command line argument.
Description: Stack-based buffer overflow in shar in GNU sharutils 4.2.1 allows local users to execute arbitrary code via a long -o command line argument.
Family: unix Class: vulnerability
Reference(s): CVE-2004-1772
 Version: 5
Platform(s): Red Hat Enterprise Linux 3
CentOS Linux 3
Red Hat Enterprise Linux 4
CentOS Linux 4
Oracle Linux 4
 Product(s):
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:9613
 
Oval ID: oval:org.mitre.oval:def:9613
Title: unshar (unshar.c) in sharutils 4.2.1 allows local users to overwrite arbitrary files via a symlink attack on the unsh.X temporary file.
Description: unshar (unshar.c) in sharutils 4.2.1 allows local users to overwrite arbitrary files via a symlink attack on the unsh.X temporary file.
Family: unix Class: vulnerability
Reference(s): CVE-2005-0990
 Version: 5
Platform(s): Red Hat Enterprise Linux 3
CentOS Linux 3
Red Hat Enterprise Linux 4
CentOS Linux 4
Oracle Linux 4
 Product(s):
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 2

OpenVAS Exploits

Date Description
2008-09-24 Name : Gentoo Security Advisory GLSA 200410-01 (sharutils)
File : nvt/glsa_200410_01.nasl
2008-09-04 Name : FreeBSD Ports: sharutils
File : nvt/freebsd_sharutils.nasl
2008-09-04 Name : FreeBSD Ports: sharutils
File : nvt/freebsd_sharutils0.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
15376 GNU sharutils unshar Unspecified Overflow
15375 GNU sharutils shar Output Overflow

A local overflow exists in GNU sharutils shar command. GNU shar fails to check the length of data returned by the shar command resulting in a buffer overflow. With a specially crafted shar archive, an attacker can cause loss of integrity.
15260 GNU sharutils unshar Symlink Arbitrary File Overwrite
10231 GNU sharutils shar -o Option Local Overflow

A local overflow exists in GNU sharutils. The shar command from sharutils fails to correctly limit the size of the value passed in with the -o option resulting in a buffer overflow. With a specially crafted request, an attacker can cause a denial of service and possible code execution resulting in a loss of integrity.

Nessus® Vulnerability Scanner

Date Description
2009-04-23 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_26c9e8c61c9911d9814e0001020eed82.nasl - Type : ACT_GATHER_INFO
2006-07-03 Name : The remote CentOS host is missing a security update.
File : centos_RHSA-2005-377.nasl - Type : ACT_GATHER_INFO
2005-09-12 Name : The remote Fedora Core host is missing a security update.
File : fedora_2005-319.nasl - Type : ACT_GATHER_INFO
2005-07-13 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_5f003a08ba3c11d9837d000e0c2e438a.nasl - Type : ACT_GATHER_INFO
2005-05-19 Name : The remote Fedora Core host is missing a security update.
File : fedora_2005-280.nasl - Type : ACT_GATHER_INFO
2005-04-27 Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2005-377.nasl - Type : ACT_GATHER_INFO
2005-04-08 Name : The remote Mandrake Linux host is missing a security update.
File : mandrake_MDKSA-2005-067.nasl - Type : ACT_GATHER_INFO
2004-10-01 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200410-01.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:49:17
  • Multiple Updates