[Full-disclosure] [SECURITY] [DSA 2276-1] asterisk security update



-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- -------------------------------------------------------------------------
Debian Security Advisory DSA-2276-1 security@xxxxxxxxxx
http://www.debian.org/security/ Luciano Bello
July 10, 2011 http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : asterisk
Vulnerability : multiple denial of service
Problem type : remote
Debian-specific: no
CVE ID : CVE-2011-2529 CVE-2011-2535
Debian Bug : 631445 631446 631448

Paul Belanger reported a vulnerability in Asterisk identified as AST-2011-008
(CVE-2011-2529) through which an unauthenticated attacker may crash an Asterisk
server remotely. A package containing a null char causes the SIP header parser
to alter unrelated memory structures.

Jared Mauch reported a vulnerability in Asterisk identified as AST-2011-009
through which an unauthenticated attacker may crash an Asterisk server remotely.
If a user sends a package with a Contact header with a missing left angle
bracket (<) the server will crash. A possible workaround is to disable chan_sip.

The vulnerability identified as AST-2011-010 (CVE-2011-2535) reported about an
input validation error in the IAX2 channel driver. An unauthenticated attacker
may crash an Asterisk server remotely by sending a crafted option control frame.


For the oldstable distribution (lenny), this problem has been fixed in
version 1.4.21.2~dfsg-3+lenny3.

For the stable distribution (squeeze), this problem has been fixed in
version 1.6.2.9-2+squeeze3.

For the testing distribution (wheezy), this problem has been fixed in
version 1:1.8.4.3-1.

For the unstable distribution (sid), this problem has been fixed in
version 1:1.8.4.3-1.

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: http://www.debian.org/security/

Mailing list: debian-security-announce@xxxxxxxxxxxxxxxx

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)

iEYEARECAAYFAk4Zwm8ACgkQHYflSXNkfP+G9QCgmlIDAuhXZSFFYspmaJkvt8uS
gwkAnRduatGpgQo19s7RuEOspPIgOtlE
=RXeA
-----END PGP SIGNATURE-----

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/



Relevant Pages