CVE-2013-2264

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-04-01 · updated 2026-06-16
Weakness: CWE-200

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.

Affected products

asterisk Business Edition: c.3.2.2, c.3.3, c.3.3.2
asterisk Certified Asterisk: 1.8.15-cert1, 1.8.15.0, 1.8.15.0-rc1
asterisk Digiumphones: 10.0.0, 10.0.0-beta1, 10.0.0-beta2, 10.0.0-rc1, 10.0.0-rc2, 10.0.0-rc3 (+38)
asterisk Open Source: 1.8.0, 1.8.0-beta1, 1.8.0-beta2, 1.8.0-beta3, 1.8.0-beta4, 1.8.0-beta5 (+176)

References

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