Debian: DSA-2493-1: asterisk security update
Debian: DSA-2493-1: asterisk security update
Several vulnerabilities were discovered in Asterisk, a PBX and telephony toolkit. CVE-2012-2947
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - ------------------------------------------------------------------------- Debian Security Advisory DSA-2493-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/security/ Florian Weimer June 12, 2012 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : asterisk Vulnerability : denial of service Problem type : remote Debian-specific: no CVE ID : CVE-2012-2947 CVE-2012-2948 Debian Bug : 675204 675210 Several vulnerabilities were discovered in Asterisk, a PBX and telephony toolkit. CVE-2012-2947 The IAX2 channel driver allows remote attackers to cause a denial of service (daemon crash) by placing a call on hold (when a certain mohinterpret setting is enabled). CVE-2012-2948 The Skinny channel driver allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) by closing a connection in off-hook mode. In addition, it was discovered that Asterisk does not set the alwaysauthreject option by default in the SIP channel driver. This allows remote attackers to observe a difference in response behavior and check for the presence of account names. (CVE-2011-2666) System administrators concerned by this user enumerating vulnerability should enable the alwaysauthreject option in the configuration. We do not plan to change the default setting in the stable version (Asterisk 1.6) in order to preserve backwards compatibility. For the stable distribution (squeeze), this problem has been fixed in version 1:1.6.2.9-2+squeeze6. For the testing distribution (wheezy) and the unstable distribution (sid), this problem has been fixed in version 1:1.8.13.0~dfsg-1. We recommend that you upgrade your asterisk packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.