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CVE-2011-2666

N/A
Published: July 6, 2011 at 07:00 PM UTC
Updated: June 16, 2026 at 11:31 PM UTC
1 product affected across 1 vendorAsterisk

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Severity
N/A
Exploit prediction
EPSS 1%

Description

The default configuration of the SIP channel driver in Asterisk Open Source 1.4.x through 1.4.41.2 and 1.6.2.x through 1.6.2.18.2 does not enable the alwaysauthreject option, which allows remote attackers to enumerate account names by making a series of invalid SIP requests and observing the differences in the responses for different usernames, a different vulnerability than CVE-2011-2536.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Asterisk· Digium
95%
1.4.01.4.0 beta11.4.0 beta21.4.0 beta31.4.0 beta41.4.11.4.101.4.10.11.4.111.4.121.4.12.11.4.131.4.141.4.151.4.161.4.16.11.4.16.21.4.171.4.181.4.191.4.19 rc11.4.19 rc21.4.19 rc31.4.19 rc41.4.19.11.4.19.21.4.21.4.201.4.20 rc11.4.20 rc21.4.20 rc31.4.20.11.4.211.4.21 rc11.4.21 rc21.4.21.11.4.21.21.4.221.4.22 rc11.4.22 rc21.4.22 rc31.4.22 rc41.4.22 rc51.4.22.11.4.22.21.4.231.4.23 rc11.4.23 rc21.4.23 rc31.4.23 rc41.4.23.11.4.23.21.4.241.4.24 rc11.4.24.11.4.251.4.25 rc11.4.25.11.4.261.4.26 rc11.4.26 rc21.4.26 rc31.4.26 rc41.4.26 rc51.4.26 rc61.4.26.11.4.26.21.4.26.31.4.271.4.27 rc11.4.27 rc21.4.27 rc31.4.27 rc41.4.27 rc51.4.27.11.4.281.4.28 rc11.4.291.4.29 rc11.4.29.11.4.31.4.301.4.30 rc21.4.30 rc31.4.311.4.31 rc11.4.31 rc21.4.321.4.32 rc11.4.331.4.33 rc11.4.33 rc21.4.33.11.4.341.4.34 rc11.4.34 rc21.4.351.4.35 rc11.4.361.4.36 rc11.4.371.4.37 rc11.4.381.4.38 rc11.4.391.4.39 rc11.4.39.11.4.39.21.4.41.4.401.4.40 rc11.4.40 rc21.4.40 rc31.4.40.11.4.40.21.4.411.4.41 rc11.4.41.11.4.41.21.4.51.4.61.4.71.4.7.11.4.81.4.91.6.2.01.6.2.0 rc21.6.2.0 rc31.6.2.0 rc41.6.2.0 rc51.6.2.0 rc61.6.2.0 rc71.6.2.0 rc81.6.2.11.6.2.1 rc11.6.2.15 rc11.6.2.161.6.2.16 rc11.6.2.16.11.6.2.16.21.6.2.171.6.2.17 rc11.6.2.17 rc21.6.2.17 rc31.6.2.17.11.6.2.17.21.6.2.17.31.6.2.181.6.2.18 rc11.6.2.18.11.6.2.18.21.6.2.21.6.2.3 rc21.6.2.41.6.2.51.6.2.61.6.2.6 rc11.6.2.6 rc2

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
http://downloads.asterisk.org/pub/security/AST-2011-011.html
VDB Entryx_refsource_XF
Source: [email protected]
https://exchange.xforce.ibmcloud.com/vulnerabilities/68472

CVSS

5MEDIUM[email protected]
Confidentiality
PARTIAL
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-16

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