GNU C Library (glibc) process_envvars integer overflow
| glibc-envvars-overflow (35240) |  Medium Risk |
Description:
The GNU C Library (glibc) is vulnerable to an integer overflow in the process_envvars function. By setting a large LD_HWCAP_MASK environment variable, a local attacker could exploit this vulnerability to possibly execute arbitrary code on the system.
Platforms Affected:
- Gentoo, glibc 2.5 R3
- Gentoo, Linux
Remedy:
Apply the appropriate patch for your system. See References.
Consequences:
Gain Privileges
References:
- GNU C Library Web page, GNC C Library - GNU Project - Free Software Foundation (FSF) at http://www.gnu.org/software/libc/libc.html.
- BID-24758: GNU GLibC LD.SO Mask Dynamic Loader Integer Overflow Vulnerability
- CVE-2007-3508: ** DISPUTED ** Integer overflow in the process_envvars function in elf/rtld.c in glibc before 2.5-rc4 might allow local users to execute arbitrary code via a large LD_HWCAP_MASK environment variable value. NOTE: the glibc maintainers state that they do not believe that this issue is exploitable for code execution.
- GLSA-200707-04: GNU C Library: Integer overflow
- SECTRACK ID: 1018334: Glibc LD_HWCAP_MASK Integer Overflow Lets Local Users Execute Arbitrary Code
- VUPEN/ADV-2007-2418: GNU C Library (glibc) process_envvars() Function Local Integer Overflow Vulnerability
Reported:
Jul 03, 2007
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