Information Exposure Affecting asterisk package, versions <1:1.8.8.0~dfsg-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
1.16% (86th percentile)

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  • Snyk IDSNYK-DEBIAN11-ASTERISK-530282
  • published15 Dec 2011
  • disclosed15 Dec 2011

Introduced: 15 Dec 2011

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

How to fix?

Upgrade Debian:11 asterisk to version 1:1.8.8.0~dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream asterisk package and not the asterisk package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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