Secure testing team - Jun 2011 - Bug#629234: Vulnerable to the “billion laughs” denial-of-service attack

Package: prosody
Version: 0.8.0-1
Severity: important
Tags: security

Version 0.7 and 0.8 are vulnerable to a DoS attack:
  http://www.ibm.com/developerworks/xml/library/x-tipcfsx/index.html#N100F1

To fix the bug, lua-expat 1.2.0 is needed, and an update version of prosody

http://prosody.im/doc/release/0.8.1#backporting



-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, ''unstable''), (500,
''testing''), (150, ''experimental'')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.39-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages prosody depends on:
ii  adduser                       3.112+nmu2 add and remove users and groups
ii  libc6                         2.13-4     Embedded GNU C Library: Shared lib
ii  libidn11                      1.20-1     GNU Libidn library, implementation
ii  liblua5.1-0                   5.1.4-6    Simple, extensible, embeddable pro
ii  liblua5.1-expat0              1.2.0-1    libexpat bindings for the Lua lang
ii  liblua5.1-filesystem0         1.5.0-2    luafilesystem library for the Lua 
ii  liblua5.1-socket2             2.0.2-5    TCP/UDP socket library for Lua 5.1
ii  libssl1.0.0                   1.0.0d-2   SSL shared libraries
ii  lua5.1                        5.1.4-6    Simple, extensible, embeddable pro
ii  openssl                       1.0.0d-2   Secure Socket Layer (SSL) binary a

Versions of packages prosody recommends:
ii  liblua5.1-event0              0.1.1-3    asynchronous event notification li
ii  liblua5.1-sec1                0.4-4      SSL socket library for the Lua lan

prosody suggests no packages.

-- Configuration Files:
/etc/prosody/conf.avail/example.com.cfg.lua [Errno 13] Permission denied:
u''/etc/prosody/conf.avail/example.com.cfg.lua''
/etc/prosody/conf.avail/localhost.cfg.lua [Errno 13] Permission denied:
u''/etc/prosody/conf.avail/localhost.cfg.lua''
/etc/prosody/prosody.cfg.lua [Errno 13] Permission denied:
u''/etc/prosody/prosody.cfg.lua''

-- no debconf information