Bug 644554 (CVE-2010-3998)
| Summary: | CVE-2010-3998 banshee: insecure library loading vulnerability | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Vincent Danen <vdanen> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | unspecified | CC: | chkr, security-response-team |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2010-11-12 22:28:20 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 644941 | ||
| Bug Blocks: | |||
This issue has been assigned the name CVE-2010-3998. Created banshee tracking bugs for this issue Affects: fedora-all [bug 644941] The following updates were pushed out to stable. https://admin.fedoraproject.org/updates/banshee-1.8.0-10.fc14 https://admin.fedoraproject.org/updates/banshee-1.6.1-4.fc12 https://admin.fedoraproject.org/updates/banshee-1.6.1-4.fc13 |
Ludwig Nussel discovered that banshee contained a script that could be abused by an attacker to execute arbitrary code. The vulnerability is due to an insecure change to LD_LIBRARY_PATH, and environment variable used by ld.so(8) to look for libraries in directories other than the standard paths. When there is an empty item in the colon-separated list of directories in LD_LIBRARY_PATH, ld.so(8) treats it as a '.' (current working directory). If the given script is executed from a directory where a local attacker could write files, there is a chance for exploitation. In Fedora, both /usr/bin/banshee-1 and /usr/bin/muinshee re-set LD_LIBRARY_PATH insecurely (incidentally, GST_PLUGIN_PATH is also re-set insecurely): export LD_LIBRARY_PATH=/usr/lib:/usr/lib/banshee-1:/usr/lib/banshee-1/Extensions:/usr/lib/banshee-1/Backends${LD_LIBRARY_PATH+:$LD_LIBRARY_PATH} export GST_PLUGIN_PATH=/usr/lib/banshee-1/gstreamer-0.10${GST_PLUGIN_PATH+:$GST_PLUGIN_PATH} A solution is to patch the script to use ':+:' properly: export LD_LIBRARY_PATH=/usr/lib/foo${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}