Use-after-free vulnerability in the NetWare Core Protocol (NCP) feature in Novell eDirectory 8.7.3 SP10 before 8.7.3 SP10 FTF1 and 8.8 SP2 for Windows allows remote attackers to cause a denial of service and possibly execute arbitrary code via a sequence of Get NCP Extension Information By Name requests that cause one thread to operate on memory after it has been freed in another thread, which triggers memory corruption, aka Novell Bug 373852.
Weakness
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Edirectory | Novell | * | 8.7.3 (excluding) |
| Edirectory | Novell | 8.7.3-sp1 (including) | 8.7.3-sp1 (including) |
| Edirectory | Novell | 8.7.3-sp2 (including) | 8.7.3-sp2 (including) |
| Edirectory | Novell | 8.7.3-sp3 (including) | 8.7.3-sp3 (including) |
| Edirectory | Novell | 8.7.3-sp4 (including) | 8.7.3-sp4 (including) |
| Edirectory | Novell | 8.7.3-sp5 (including) | 8.7.3-sp5 (including) |
| Edirectory | Novell | 8.7.3-sp6 (including) | 8.7.3-sp6 (including) |
| Edirectory | Novell | 8.7.3-sp7 (including) | 8.7.3-sp7 (including) |
| Edirectory | Novell | 8.7.3-sp8 (including) | 8.7.3-sp8 (including) |
| Edirectory | Novell | 8.7.3-sp9 (including) | 8.7.3-sp9 (including) |
| Edirectory | Novell | 8.8 (including) | 8.8 (including) |
Potential Mitigations
References
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=748
- http://osvdb.org/48206
- http://secunia.com/advisories/32395
- http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5037180.html
- http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5037181.html
- http://www.novell.com/support/viewContent.do?externalId=3426981
- http://www.securityfocus.com/bid/31956
- http://www.securitytracker.com/id?1021117
- http://www.vupen.com/english/advisories/2008/2937
- https://exchange.xforce.ibmcloud.com/vulnerabilities/46138
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=748
- http://osvdb.org/48206
- http://secunia.com/advisories/32395
- http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5037180.html
- http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5037181.html
- http://www.novell.com/support/viewContent.do?externalId=3426981
- http://www.securityfocus.com/bid/31956
- http://www.securitytracker.com/id?1021117
- http://www.vupen.com/english/advisories/2008/2937
- https://exchange.xforce.ibmcloud.com/vulnerabilities/46138