The package ejabberd before version 14.07-2 allows clients to connect with an unencrypted connection even if starttls_required is set. . Arch Linux Security Advisory ASA-201410-13 ========================================= Severity: High Date : 2014-10-27 CVE-ID : CVE-2014-8760 Package : ejabberd Type : circumvention of encryption Remote : No Link : https://wiki.archlinux.org/title/CVE-2014 Summary ====== The package ejabberd before version 14.07-2 allows clients to connect with an unencrypted connection even if starttls_required is set. Resolution ========= Upgrade to 14.07-2. # pacman -Syu "ejabberd> =14.07-2" The problems have been fixed upstream [0] but no release version is available yet. Workaround ========= Disable compression ('zlib' in c2s configuration) and find affected users with: # ejabberdctl connected_users_info | grep 'c2s_compressed\s' You may kick affected user sessions and they should be able to reconnect with encryption and without compression. Description ========== It was discovered that ejabberd does not enforce the starttls_required setting when compression is used, which causes clients to unexpectedly establish connections without encryption. Impact ===== A local user can unexpectedly connect without any encryption and send sensitive information in plaintext to the server even if encryption was set as required. References ========= [0] https://github.com/processone/ejabberd/commit/7bdc115 https://www.cve.org/CVERecord?id=CVE-2014-8760 https://bugs.archlinux.org/task/42541 . Critical Arch Linux security notice regarding ejabberd improperly managing unencrypted connections despite configured encryption parameters.. ejabberd Security, Arch Linux Update, Encryption Issue. . LinuxSecurity.com Team
It was discovered that ejabberd, a Jabber/XMPP server, uses SSLv2 and weak ciphers for communication, which are considered insecure. The software offers no runtime configuration options to disable these. This update disables the use of SSLv2 and weak ciphers. . - ------------------------------------------------------------------------- Debian Security Advisory DSA-2775-1
Multiple vulnerabilities have been found in ejabberd, the worst of which allowing for remote Denial of Service.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201206-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: ejabberd: Multiple Denial of Service vulnerabilities Date: June 21, 2012 Bugs: #308047, #370201, #386075 ID: 201206-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= Multiple vulnerabilities have been found in ejabberd, the worst of which allowing for remote Denial of Service. Background ========= ejabberd is the Erlang jabber daemon. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-im/ejabberd < 2.1.9 > = 2.1.9 Description ========== Multiple vulnerabilities have been discovered in ejabberd. Please review the CVE identifiers referenced below for details. Impact ===== ejabberd allows remote attackers to cause a Denial of Service condition with the result of either crashing the daemon or the whole system by causing memory and CPU consumption. Workaround ========= There is no known workaround at this time. Resolution ========= All ejabberd users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =net-im/ejabberd-2.1.9" References ========= [ 1 ] CVE-2010-0305 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0305 [ 2 ] CVE-2011-1753 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1753 [ 3 ] CVE-2011-4320 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4320 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201206-10 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to
Wouter Coekaerts discovered that ejabberd, a distributed XMPP/Jabber server written in Erlang, is vulnerable to the so-called "billion laughs" attack because it does not prevent entity expansion on received data. This allows an attacker to perform denial of service attacks against the . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - ------------------------------------------------------------------------- Debian Security Advisory DSA-2248-1
It was discovered that in ejabberd, a distributed XMPP/Jabber server written in Erlang, a problem in ejabberd_c2s.erl allows remote authenticated users to cause a denial of service by sending a large number of c2s (client2server) messages; that triggers an overload of the . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - ------------------------------------------------------------------------ Debian Security Advisory DSA-2033-1
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