Input validation error in SystemTap - CVE-2011-2503
Published: July 26, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU43778
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2011-2503
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: SystemTap
Affected software:
SystemTap
SystemTap
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The insert_module function in runtime/staprun/staprun_funcs.c in the systemtap runtime tool (staprun) in SystemTap before 1.6 does not properly validate a module when loading it, which allows local users to gain privileges via a race condition between the signature validation and the module initialization.
How to mitigate CVE-2011-2503
Install update from vendor's website.
Sources
- http://secunia.com/advisories/45377
- http://secunia.com/advisories/46920
- http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git;a=blob;f=NEWS;hb=304d73b1fea24af791f2a129fb141c5009eae6a8
- http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git;a=commitdiff;h=ed51cfa24ca27746ab09b59280b94117dd58cba3
- http://www.debian.org/security/2011/dsa-2348
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-2503