Unscored severity · published Dec 15, 2011
CVE-2011-4597
The SIP over UDP implementation in Asterisk Open Source 1.4.x before 1.4.43, 1.6.x before 1.6.2.21, and 1.8.x before 1.8.7.2 uses different port numbers for responses to invalid…
–
CVSS
3.2%
EPSS
No
On KEV
Description
The SIP over UDP implementation in Asterisk Open Source 1.4.x before 1.4.43, 1.6.x before 1.6.2.21, and 1.8.x before 1.8.7.2 uses different port numbers for responses to invalid requests depending on whether a SIP username exists, which allows remote attackers to enumerate usernames via a series of requests.
Exploitation
Is it being used?
Exploit prediction (EPSS)3.2% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Asterisk · Digium
1.8.0; 1.8.0; 1.8.0; 1.8.0; 1.8.0; 1.8.0; +34 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2011-4597
CVE.org
https://www.cve.org/CVERecord?id=CVE-2011-4597
archives.neohapsis.com
http://archives.neohapsis.com/archives/bugtraq/2011-12/0151.html
downloads.asterisk.org
http://downloads.asterisk.org/pub/security/AST-2011-013.html
lists.digium.com
http://lists.digium.com/pipermail/asterisk-dev/2011-November/052191.html
openwall.com
http://openwall.com/lists/oss-security/2011/12/09/3
openwall.com
http://openwall.com/lists/oss-security/2011/12/09/4
osvdb.org
http://osvdb.org/77597
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