Bug 212056 (CVE-2006-4573)
| Summary: | CVE-2006-4573 screen buffer overflow | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Josh Bressers <bressers> |
| Component: | vulnerability | Assignee: | Marcela Mašláňová <mmaslano> |
| Status: | CLOSED NEXTRELEASE | QA Contact: | Brock Organ <borgan> |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | unspecified | Keywords: | Security |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| URL: | http://lists.gnu.org/archive/html/screen-users/2006-10/msg00028.html | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2007-08-09 15:12:00 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: | |||
Solved in rawhide. Please update on screen-4.0.3 and higher. Statement: Red Hat no longer plans to fix this issue in Red Hat Enterprise Linux 4. |
From the screen-users mailing list: I've just released screen-4.0.3. This is not the promised next version with vertical split and other cool things, but just a security release that fixes two bugs in the utf8 combining characters handling. The bugs could be used to crash/hang screen by writing a special string to a window. The fixed version is (as usual) available via: ftp://ftp.uni-erlangen.de/pub/utilities/screen/screen-4.0.3.tar.gz Credits go to cstone & Rich Felker for finding the bugs. Kees Cook of Ubuntu analysed this issue and determined that it's likely an exploitable issue, but it's non trivial to exploit. This will require a fair amount of user interaction to exploit, thus the low severity. This issue also likely affects RHEL2.1 and RHEL3