main/acl.c in Asterisk Open Source 1.6.0.x before 1.6.0.25, 1.6.1.x before 1.6.1.17, and 1.6.2.x before 1.6.2.5 does not properly enforce remote host access controls when CIDR notation "/0" is used in permit= and deny= configuration rules, which causes an improper arithmetic shift and might allow remote attackers to bypass ACL rules and access services from unauthorized hosts.
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.
| Link | Tags |
|---|---|
| http://www.securityfocus.com/archive/1/509757/100/0/threaded | mailing list |
| http://downloads.asterisk.org/pub/security/AST-2010-003.html | |
| http://downloads.asterisk.org/pub/security/AST-2010-003-1.6.2.diff | patch |
| http://secunia.com/advisories/39096 | third party advisory |
| http://lists.fedoraproject.org/pipermail/package-announce/2010-March/037679.html | vendor advisory |
| http://downloads.asterisk.org/pub/security/AST-2010-003-1.6.0.diff | |
| http://www.vupen.com/english/advisories/2010/0475 | vdb entry vendor advisory |
| http://downloads.asterisk.org/pub/security/AST-2010-003-1.6.1.diff | |
| http://osvdb.org/62588 | vdb entry |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/56552 | vdb entry |
| http://www.securityfocus.com/bid/38424 | vdb entry |
| http://secunia.com/advisories/38752 | third party advisory vendor advisory |