SystemTap 1.4, when unprivileged (aka stapusr) mode is enabled, allows local users to cause a denial of service (divide-by-zero error and OOPS) via a crafted ELF program with DWARF expressions that are not properly handled by a stap script that performs stack unwinding (aka backtracing).
CVSS Severity (version 2.0):
Impact Subscore: 2.9
Exploitability Subscore: 1.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable; Victim must voluntarily interact with attack mechanism
Access Complexity: High
Authentication: Not required to exploit
Impact Type: Allows disruption of service
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[oss-security] 20110520 systemtap divide-by-zero issues (CVE-2011-1769, CVE-2011-1781)
Vulnerable software and versions