Vulnerability Details : CVE-2011-1781
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).
Vulnerability category: Denial of service
Products affected by CVE-2011-1781
- cpe:2.3:a:systemtap:systemtap:1.4:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2011-1781
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2011-1781
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
1.2
|
LOW | AV:L/AC:H/Au:N/C:N/I:N/A:P |
1.9
|
2.9
|
NIST |
CWE ids for CVE-2011-1781
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2011-1781
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https://bugzilla.redhat.com/show_bug.cgi?id=702687
702687 – (CVE-2011-1769) CVE-2011-1769 systemtap: does not guard against DWARF operations div-by-zero errors, which can cause a kernel panic
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https://rhn.redhat.com/errata/RHSA-2011-0842.html
RHSA-2011:0842 - Security Advisory - Red Hat Customer Portal
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http://openwall.com/lists/oss-security/2011/05/20/2
oss-security - systemtap divide-by-zero issues (CVE-2011-1769, CVE-2011-1781)
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http://sourceware.org/git/?p=systemtap.git%3Ba=commit%3Bh=fa2e3415185a28542d419a641ecd6cddd52e3cd9
sourceware.org Git
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http://www.mandriva.com/security/advisories?name=MDVSA-2011:155
mandriva.com
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http://www.securityfocus.com/bid/47934
SystemTap DWARF Expression Handling Two Divide-By-Zero Denial of Service Vulnerabilities
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