SB2011083002 - Input validation error in SystemTap
Published: August 30, 2011 Updated: August 11, 2020
Security Bulletin ID
SB2011083002
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2011-1781)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
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).
Remediation
Install update from vendor's website.
References
- http://openwall.com/lists/oss-security/2011/05/20/2
- http://secunia.com/advisories/44802
- http://sourceware.org/git/?p=systemtap.git;a=commit;h=fa2e3415185a28542d419a641ecd6cddd52e3cd9
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:155
- http://www.securityfocus.com/bid/47934
- https://bugzilla.redhat.com/show_bug.cgi?id=702687
- https://rhn.redhat.com/errata/RHSA-2011-0842.html