Information Exposure Affecting asterisk package, versions <1:1.8.4.4~dfsg-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.39% (75th percentile)

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  • Snyk IDSNYK-DEBIAN10-ASTERISK-428679
  • published6 Jul 2011
  • disclosed6 Jul 2011

Introduced: 6 Jul 2011

CVE-2011-2536  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Debian:10 asterisk to version 1:1.8.4.4~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:10 relevant fixed versions and status.

chan_sip.c in the SIP channel driver in Asterisk Open Source 1.4.x before 1.4.41.2, 1.6.2.x before 1.6.2.18.2, and 1.8.x before 1.8.4.4, and Asterisk Business Edition C.3.x before C.3.7.3, disregards the alwaysauthreject option and generates different responses for invalid SIP requests depending on whether the user account exists, which allows remote attackers to enumerate account names via a series of requests.

CVSS Scores

version 3.1