Unscored severity · published Jul 6, 2011
CVE-2011-2666
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,…
–
CVSS
1.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Asterisk · Digium
1.6.2.0; 1.6.2.0; 1.6.2.0; 1.6.2.0; 1.6.2.0; 1.6.2.0; +34 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2011-2666
CVE.org
https://www.cve.org/CVERecord?id=CVE-2011-2666
Vendor Advisory
http://downloads.asterisk.org/pub/security/AST-2011-011.html
exchange.xforce.ibmcloud.com
https://exchange.xforce.ibmcloud.com/vulnerabilities/68472
More from Asterisk
9.8
CVE-2022-26651
An issue was discovered in Asterisk through 19.x and Certified Asterisk through 16.8-cert13
9.8
CVE-2017-14100
In Asterisk 11.x before 11.25.2, 13.x before 13.17.1, and 14.x before 14.6.1 and Certified Asterisk 11.x before 11.6-cert17 and 13.x before 13.13-cert5, unauthorized command…
9.1
CVE-2022-26499
An SSRF issue was discovered in Asterisk through 19.x
8.8
CVE-2019-18610
An issue was discovered in manager.c in Sangoma Asterisk through 13.x, 16.x, 17.x and Certified Asterisk 13.21 through 13.21-cert4
8.8
CVE-2017-16671
A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7