CVE Vulnerabilities

CVE-2013-1976

Improper Link Resolution Before File Access ('Link Following')

Published: Jul 09, 2013 | Modified: Nov 21, 2024
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
6.9 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C
RedHat/V2
6.9 IMPORTANT
AV:L/AC:M/Au:N/C:C/I:C/A:C
RedHat/V3
Ubuntu
MEDIUM

The (1) tomcat5, (2) tomcat6, and (3) tomcat7 init scripts, as used in the RPM distribution of Tomcat for JBoss Enterprise Web Server 1.0.2 and 2.0.0, and Red Hat Enterprise Linux 5 and 6, allow local users to change the ownership of arbitrary files via a symlink attack on (a) tomcat5-initd.log, (b) tomcat6-initd.log, (c) catalina.out, or (d) tomcat7-initd.log.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Name Vendor Start Version End Version
Jboss_enterprise_web_server Redhat 1.0.2 (including) 1.0.2 (including)
Jboss_enterprise_web_server Redhat 2.0.0 (including) 2.0.0 (including)
Enterprise_linux Redhat 5 (including) 5 (including)
Enterprise_linux Redhat 6.0 (including) 6.0 (including)
Red Hat Enterprise Linux 5 RedHat tomcat5-0:5.5.23-0jpp.40.el5_9 *
Red Hat Enterprise Linux 6 RedHat tomcat6-0:6.0.24-55.el6_4 *
Red Hat JBoss Enterprise Web Server 1 for RHEL 5 RedHat tomcat5-0:5.5.33-33_patch_09.ep5.el5 *
Red Hat JBoss Enterprise Web Server 1 for RHEL 5 RedHat tomcat6-0:6.0.32-32_patch_09.ep5.el5 *
Red Hat JBoss Enterprise Web Server 1 for RHEL 6 RedHat tomcat5-0:5.5.33-36_patch_09.ep5.el6 *
Red Hat JBoss Enterprise Web Server 1 for RHEL 6 RedHat tomcat6-0:6.0.32-35_patch_09.ep5.el6 *
Red Hat JBoss Enterprise Web Server 2 for RHEL 5 RedHat tomcat6-0:6.0.35-12_patch_07.ep6.el5 *
Red Hat JBoss Enterprise Web Server 2 for RHEL 5 RedHat tomcat7-0:7.0.30-5_patch_03.ep6.el5 *
Red Hat JBoss Enterprise Web Server 2 for RHEL 6 RedHat tomcat6-0:6.0.35-33_patch_07.ep6.el6 *
Red Hat JBoss Enterprise Web Server 2 for RHEL 6 RedHat tomcat7-0:7.0.30-7_patch_03.ep6.el6 *

Potential Mitigations

  • Follow the principle of least privilege when assigning access rights to entities in a software system.
  • Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

References