CVE-2013-2264

Description

The SIP channel driver in Asterisk Open Source 1.8.x before 1.8.20.2, 10.x before 10.12.2, and 11.x before 11.2.2; Certified Asterisk 1.8.15 before 1.8.15-cert2; Asterisk Business Edition (BE) C.3.x before C.3.8.1; and Asterisk Digiumphones 10.x-digiumphones before 10.12.2-digiumphones exhibits different behavior for invalid INVITE, SUBSCRIBE, and REGISTER transactions depending on whether the user account exists, which allows remote attackers to enumerate account names by (1) reading HTTP status codes, (2) reading additional text in a 403 (aka Forbidden) response, or (3) observing whether certain retransmissions occur.

References

Link	Tags
http://downloads.asterisk.org/pub/security/AST-2013-003.html	vendor advisory
https://issues.asterisk.org/jira/browse/ASTERISK-21013	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2013-2264?: CVE-2013-2264 has been scored as a medium severity vulnerability.
How to fix CVE-2013-2264?: To fix CVE-2013-2264, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-2264 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2013-2264 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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Description

Category

CWE-200 – Exposure of Sensitive Information to an Unauthorized Actor

References

Frequently Asked Questions