Several vulnerabilities were discovered in the Asterisk PBX and telephony toolkit:
Russell Bryant discovered a buffer overflow in the Milliwatt application.
David Woolley discovered a privilege escalation in the Asterisk manager interface.
Russell Bryant discovered a buffer overflow in the Skinny driver.
For the stable distribution (squeeze), this problem has been fixed in version 1:188.8.131.52-2+squeeze5.
For the unstable distribution (sid), this problem will be fixed soon.
We recommend that you upgrade your asterisk packages.