Information Exposure Affecting asterisk package, versions [,1.4.43)[1.6.2.0,1.6.2.21)[1.8.7.0,1.8.7.2)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
1.16% (85th percentile)

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  • Snyk IDSNYK-UNMANAGED-ASTERISK-2371638
  • published26 Jan 2022
  • disclosed15 Dec 2011
  • creditUnknown

Introduced: 15 Dec 2011

CVE-2011-4597  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade asterisk to version 1.4.43, 1.6.2.21, 1.8.7.2 or higher.

Overview

Affected versions of this package are vulnerable to Information Exposure. 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.

CVSS Scores

version 3.1