Red Hat Bugzilla – Bug 1043917
asterisk: asterisk manager user dialplan permission escalation
Last modified: 2015-08-22 12:47:53 EDT
External control protocols, such as the Asterisk Manager Interface, often have the ability to get and set channel variables; this allows the execution of dialplan functions.
Dialplan functions within Asterisk are incredibly powerful, which is wonderful for building applications using Asterisk. But during the read or write execution, certain diaplan functions do much more. For example, reading the SHELL() function can execute arbitrary commands on the system Asterisk is running on. Writing to the FILE() function can change any file that Asterisk has write access to.
When these functions are executed from an external protocol, that execution could result in a privilege escalation.
Created asterisk tracking bugs for this issue:
Affects: fedora-all [bug 1043921]
Affects: epel-6 [bug 1043923]
Looks like this will not get a CVE. Explanation in the following:
asterisk-11.7.0-1.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.
asterisk-11.7.0-1.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report.
asterisk-11.7.0-1.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.