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- November 29, 1999 - Security UPDATE Alert - Arne Vidstrom and Svante
- Sannmark have discovered a serious problem on Windows NT systems that
- have IE 5.0 installed. Because of changes to the Task Scheduler by an
- IE 5.0 installation process, the service is vulnerable to an attack
- that can lead to elevated user privileges under certain conditions.
-
- Microsoft is aware of the problem and has released a new version of
- Internet Explorer (5.1) along with a FAQ and Support Online article
- that detail the issues.
-
- Microsoft also reported a vulnerability in its Windows 9x operating
- systems caused by a legacy mechanism for caching network security
- credentials. The vulnerability could allow a user's plaintext network
- password to be retrieved from the cache.
-
- And, continuing their marathon of buffer overflow discoveries,
- USSRLabs has discovered such conditions in three more NT-based
- application services. Deerfield's WorldClient Server 2.0.0.0,
- BisonWare FTP Server, and Symantec's Mail-Gear were all discovered to
- be vulnerable to denial of service attacks, and possibly arbitrary
- code execution due to buffer overflows in the software.
-
- For complete details on all four of these newly discovered problems,
- please visit our Web site at the following URLs:
-
- * Win9x Legacy Psw Caching
- http://www.ntsecurity.net/go/load.asp?iD=/security/pswcaching.htm
-
- * IE 5.0 Task Scheduler
- http://www.ntsecurity.net/go/load.asp?iD=/security/tasksched.htm
-
- * Deerfield.com WorldClient Server
- http://www.ntsecurity.net/go/load.asp?iD=/security/worldc1.htm
-
- * BisonWare FTP Server
- http://www.ntsecurity.net/go/load.asp?iD=/security/bison1.htm
-
- * Symantec Mail-Gear
- http://www.ntsecurity.net/go/load.asp?iD=/security/mailgear1.htm
-
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-
- Sincerely,
- The Security UPDATE Team
- security@ntsecurity.net
-
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