CVE-2008-0122

Description

From CVE.org

Off-by-one error in the inet_network function in libbind in ISC BIND 9.4.2 and earlier, as used in libc in FreeBSD 6.2 through 7.0-PRERELEASE, allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted input that triggers memory corruption.

Statement

This issue did not affect the versions of GNU libc as shipped with Red Hat Enterprise Linux 2.1, 3, 4, or 5.

This issue affects the versions of libbind as shipped with Red Hat Enterprise Linux 2.1, 3, 4, and 5, however the vulnerable function is not used by any shipped applications. The Red Hat Security Response Team has therefore rated this issue as having low security impact, a future update may address this flaw. https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2008-0122

Understanding the Weakness (CWE)

CWE-193

Availability

Technical Impact: DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Instability

This weakness will generally lead to undefined behavior and therefore crashes. In the case of overflows involving loop index variables, the likelihood of infinite loops is also high.

Integrity

Technical Impact: Modify Memory

If the value in question is important to data (as opposed to flow), simple data corruption has occurred. Also, if the wrap around results in other conditions such as buffer overflows, further memory corruption may occur.

Confidentiality,Availability,Access Control

Technical Impact: Execute Unauthorized Code or Commands; Bypass Protection Mechanism

This weakness can sometimes trigger buffer overflows which can be used to execute arbitrary code. This is usually outside the scope of a program's implicit security policy.

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