Overview
Certain versions of glibc unsafely handle the $ORIGIN ELF substitution sequence which can be exploited to gain local privilege escalation.
Description
Tavis Ormandy's advisory states: "$ORIGIN is an ELF substitution sequence representing the location of the executable being loaded in the filesystem hierarchy. The intention is to allow executables to specify a search path for libraries that is relative to their location, to simplify packaging without spamming the standard search paths with single-use libraries." |
Impact
A local unprivileged attacker can escalate their privileges to root. |
Solution
Apply an update for the glibc packages from distribution vendors. |
Vendor Information
CVSS Metrics
| Group | Score | Vector |
|---|---|---|
| Base | ||
| Temporal | ||
| Environmental |
References
Acknowledgements
Thanks to Tavis Ormandy for researching and publishing the details of this vulnerability.
This document was written by Jared Allar.
Other Information
| CVE IDs: | CVE-2010-3847 |
| Severity Metric: | 13.36 |
| Date Public: | 2010-10-18 |
| Date First Published: | 2010-10-25 |
| Date Last Updated: | 2010-10-26 11:35 UTC |
| Document Revision: | 17 |