Title: Asterisk IAX2 Channel Driver IAX2_Write Function Remote Stack Buffer Overflow Vulnerability
Severity: HIGH
Description:
Asterisk is a private branch exchange (PBX) application available for Linux, BSD, and Mac OS X platforms.
The application is prone to a stack-based buffer-overflow vulnerability because it fails to bounds-check user-supplied data before copying it into an insufficiently sized buffer. This issue occurs when a 4KB video or video frame is passed to the 'iax2_write()' function. This function calls the 'iax_frame_wrap()' function, which is used to copy data from the 'ast_frame' structure' into the 'iax_frame' structure. The 'iax_frame_wrap()' function fails to check the length of the data before copying data into a fixed-sized buffer, which could result in a stack overflow.
An attacker could exploit this issue by sending a specially crafted voice or video frame to the affected computer.
Successfully exploiting this issue will allow an attacker to execute arbitrary machine code to compromise an affected computer or to cause a denial-of-service condition.
Affected Products:
- Asterisk Asterisk 1.0.0
- Asterisk Asterisk 1.0.10
- Asterisk Asterisk 1.0.11
- Asterisk Asterisk 1.0.12
- Asterisk Asterisk 1.0.6
- Asterisk Asterisk 1.0.7
- Asterisk Asterisk 1.0.8
- Asterisk Asterisk 1.0.9
- Asterisk Asterisk 1.2.0 .0-beta1
- Asterisk Asterisk 1.2.0 .0-beta2
- Asterisk Asterisk 1.2.10
- Asterisk Asterisk 1.2.11
- Asterisk Asterisk 1.2.11
- Asterisk Asterisk 1.2.13
- Asterisk Asterisk 1.2.14
- Asterisk Asterisk 1.2.15
- Asterisk Asterisk 1.2.16
- Asterisk Asterisk 1.2.17
- Asterisk Asterisk 1.2.18
- Asterisk Asterisk 1.2.19
- Asterisk Asterisk 1.2.21
- Asterisk Asterisk 1.2.5
- Asterisk Asterisk 1.2.6
- Asterisk Asterisk 1.2.7
- Asterisk Asterisk 1.2.8
- Asterisk Asterisk 1.2.9
- Asterisk Asterisk 1.4 Beta
- Asterisk Asterisk 1.4.1
- Asterisk Asterisk 1.4.2
- Asterisk Asterisk 1.4.3
- Asterisk Asterisk 1.4.4
- Asterisk Asterisk 1.4.7
- Asterisk Asterisk Appliance Developer Kit 0.4.0
- Asterisk Asterisk Business Edition A
- Asterisk Asterisk Business Edition B.1.3.2
- Asterisk Asterisk Business Edition B.1.3.3
- Asterisk Asterisk Business Edition B.2.2.0
- Debian Linux 3.1.0
- Debian Linux 3.1.0 alpha
- Debian Linux 3.1.0 amd64
- Debian Linux 3.1.0 arm
- Debian Linux 3.1.0 hppa
- Debian Linux 3.1.0 ia-32
- Debian Linux 3.1.0 ia-64
- Debian Linux 3.1.0 m68k
- Debian Linux 3.1.0 mips
- Debian Linux 3.1.0 mipsel
- Debian Linux 3.1.0 ppc
- Debian Linux 3.1.0 s/390
- Debian Linux 3.1.0 sparc
- Debian Linux 4.0
- Debian Linux 4.0 alpha
- Debian Linux 4.0 amd64
- Debian Linux 4.0 arm
- Debian Linux 4.0 hppa
- Debian Linux 4.0 ia-32
- Debian Linux 4.0 ia-64
- Debian Linux 4.0 m68k
- Debian Linux 4.0 mips
- Debian Linux 4.0 mipsel
- Debian Linux 4.0 powerpc
- Debian Linux 4.0 s/390
- Debian Linux 4.0 sparc
- Gentoo Linux
- S.u.S.E. Linux 10.0 ppc
- S.u.S.E. Linux 10.0 x86
- S.u.S.E. Linux 10.0 x86-64
- S.u.S.E. Linux 10.1 ppc
- S.u.S.E. Linux 10.1 x86
- S.u.S.E. Linux 10.1 x86-64
- S.u.S.E. Linux Personal 10.0.0 OSS
- S.u.S.E. Linux Personal 10.1
- S.u.S.E. Linux Professional 10.0.0
- S.u.S.E. Linux Professional 10.0.0 OSS
- S.u.S.E. Linux Professional 10.1
- S.u.S.E. openSUSE 10.2
References:
- Asterisk: Asterisk Homepage
- Russell Bryant, Digium, Inc.: Asterisk Project Security Advisory - ASA-2007-014
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