Title: Sun Solaris and OpenSolaris Local IP Multicast Filter Integer Overflow Vulnerability
Severity: HIGH
Description:
Sun Solaris and OpenSolaris are UNIX-based operating systems.
The software is prone to a vulnerability in the IP Multicast Filter processing of sockets because it fails to adequately bounds-check user-supplied data.
An attacker can exploit this by creating a malicious SIOCSIPMSFILTER IOCTL request. This request is used to set the socket's mulicast filter in the IP module of the kernel. In the 'ip_multi.c' source file, an unsigned buffer is assigned to a signed buffer. Using a malicious request, the attacker can control the number in the unsigned buffer. This will cause the value to be interpreted as a negative number and can be used to bypass the bounds check, resulting in an integer overflow. This will corrupt kernel memory.
An attacker can exploit this vulnerability to execute arbitrary code with superuser privileges. Failed exploit attempts will likely cause denial-of-service conditions.
This issue affects Solaris 10 and OpenSolaris builds snv_13 through snv_91 for SPARC and x86 platforms.
Affected Products:
- Avaya Interactive Response 2.0
- Avaya Interactive Response 3.0
- Sun OpenSolaris
- Sun OpenSolaris build snv_13
- Sun OpenSolaris build snv_91
- Sun Solaris 10
- Sun Solaris 10.0_x86
References:
- Avaya: ASA-2008-262 A Security Vulnerability in IP Multicast Filter processing of Socke
- Tobias Klein: Sun Solaris SIOCSIPMSFILTER Kernel Integer Overflow
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