CVE-2011-1781
First published: Mon Aug 29 2011(Updated: )
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).
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Systemtap-sdt-devel | =1.4 |
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Reference Links
- http://openwall.com/lists/oss-security/2011/05/20/2
- http://www.securityfocus.com/bid/47934
- https://bugzilla.redhat.com/show_bug.cgi?id=702687
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:155
- https://rhn.redhat.com/errata/RHSA-2011-0842.html
- http://secunia.com/advisories/44802
- http://sourceware.org/git/?p=systemtap.git%3Ba=commit%3Bh=fa2e3415185a28542d419a641ecd6cddd52e3cd9
Frequently Asked Questions
What is the severity of CVE-2011-1781?
CVE-2011-1781 has a severity rating of medium due to its potential to cause a denial of service.
How do I fix CVE-2011-1781?
To fix CVE-2011-1781, upgrade SystemTap to a version later than 1.4 where the vulnerability has been resolved.
Who is affected by CVE-2011-1781?
CVE-2011-1781 affects users running SystemTap version 1.4 with unprivileged mode enabled.
What type of attack does CVE-2011-1781 facilitate?
CVE-2011-1781 facilitates a local denial of service attack through crafted ELF programs.
What are the symptoms of CVE-2011-1781 exploitation?
Exploitation of CVE-2011-1781 may lead to a divide-by-zero error and OOPS in the affected system.
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