The extract_files function in installer.rb in RubyGems before 0.9.1 does not check whether files exist before overwriting them, which allows user-assisted remote attackers to overwrite arbitrary files, cause a denial of service, or execute arbitrary code via crafted GEM packages.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Rubygems | Rubyforge | * | 0.9.0 (including) |
| Rubygems | Rubyforge | 0.8.11 (including) | 0.8.11 (including) |
| Libgems-ruby | Ubuntu | devel | * |
| Libgems-ruby | Ubuntu | feisty | * |
| Libgems-ruby | Ubuntu | gutsy | * |
| Libgems-ruby | Ubuntu | hardy | * |
References
- http://marc.info/?l=full-disclosure\u0026m=116939816621060\u0026w=2
- http://rubyforge.org/frs/shownotes.php?release_id=9074
- http://www.novell.com/linux/security/advisories/2007_4_sr.html
- http://www.securityfocus.com/archive/1/458128/100/0/threaded
- http://www.vupen.com/english/advisories/2007/0295
- https://exchange.xforce.ibmcloud.com/vulnerabilities/31688
- http://marc.info/?l=full-disclosure\u0026m=116939816621060\u0026w=2
- http://rubyforge.org/frs/shownotes.php?release_id=9074
- http://www.novell.com/linux/security/advisories/2007_4_sr.html
- http://www.securityfocus.com/archive/1/458128/100/0/threaded
- http://www.vupen.com/english/advisories/2007/0295
- https://exchange.xforce.ibmcloud.com/vulnerabilities/31688