The Apache Software Foundation
Apache Commons Daemon fails to drop capabilities (Apache Tomcat) 보안 취약점
뉴스/소식 | 2011. 8. 16. 17:52 |CVE-2011-2729: Commons Daemon fails to drop capabilities (Apache Tomcat)
Severity: Important
Vendor:
The Apache Software Foundation
Versions Affected:
Tomcat 7.0.0 to 7.0.19
Tomcat 6.0.30 to 6.0.32
Tomcat 5.5.32 to 5.5.33
Description:
Due to a bug in the capabilities code, jsvc (the service wrapper for Linux that is part of the Commons Daemon project) does not drop capabilities allowing the application to access files and directories owned by superuser. This vulnerability only applies if:
a) Tomcat is running on a Linux operating system
b) jsvc was compiled with libcap
c) -user parameter is used
The Tomcat versions above shipped with source files for jsvc that included this vulnerability.
Mitigation:
Affected users of all versions can mitigate these vulnerabilities by taking any of the following actions:
a) upgrade to jsvc 1.0.7 or later
b) do not use -user parameter to switch user
c) recompile the jsvc without libcap support
Updated jsvc source is included in Apache Tomcat 7.0.20 and will be included in the next releases of Tomcat 6.0.x and 5.5.x. Updated source can be obtained from the Apache Commons Daemon project.
Credit:
This issue was identified by Wilfried Weissmann.
Severity: Important
Vendor:
The Apache Software Foundation
Versions Affected:
Tomcat 7.0.0 to 7.0.19
Tomcat 6.0.30 to 6.0.32
Tomcat 5.5.32 to 5.5.33
Description:
Due to a bug in the capabilities code, jsvc (the service wrapper for Linux that is part of the Commons Daemon project) does not drop capabilities allowing the application to access files and directories owned by superuser. This vulnerability only applies if:
a) Tomcat is running on a Linux operating system
b) jsvc was compiled with libcap
c) -user parameter is used
The Tomcat versions above shipped with source files for jsvc that included this vulnerability.
Mitigation:
Affected users of all versions can mitigate these vulnerabilities by taking any of the following actions:
a) upgrade to jsvc 1.0.7 or later
b) do not use -user parameter to switch user
c) recompile the jsvc without libcap support
Updated jsvc source is included in Apache Tomcat 7.0.20 and will be included in the next releases of Tomcat 6.0.x and 5.5.x. Updated source can be obtained from the Apache Commons Daemon project.
Credit:
This issue was identified by Wilfried Weissmann.