Risk
4/30/2010
08:49 PM
George V. Hulme
George V. Hulme
Commentary
50%
50%

Microsoft Issues Workaround For Serious SharePoint Vulnerability

While not a complete patch, the software maker has issued guidance detailing how to mitigate a serious vulnerability that places corporate data at-risk to snooping and theft.

While not a complete patch, the software maker has issued guidance detailing how to mitigate a serious vulnerability that places corporate data at-risk to snooping and theft.On Thursday, the Swiss security company High-Tech Bridge published a security note that detailed a cross-site scripting vulnerability in SharePoint 2007, which makes it possible for attackers to insert and execute JavaScript code of their choice on a system through a browser. The security firm also published proof-of-concept code that demonstrates the vulnerability - so expect attacks to quickly follow.

Because SharePoint servers are used for internal corporate collaboration, they make an ideal target for anyone trying to gain entry to sensitive information.

Today, Microsoft provided a short-term work-around that requires running a number of commands from the command prompt to shut down access to the at-risk part of the system. More detail on the work-around is available here.

On the company's Security, Research and Defense blog, they described the most likely way the vulnerability would be attacked:

The most likely attack scenario, then, is that an attacker sends a malicious link to a user who is logged into their Sharepoint server. If the user clicks the link, the javascript created by the attacker and embedded in the link would execute in the context of the user who clicked the link.

Best advice: apply the workaround, and hope that Microsoft is able to provide a patch for this issue by within month's scheduled patch update, May 11.

For security and technology updates throughout the day, follow me on Twitter.

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Cartoon
Current Issue
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2015-0192
Published: 2015-07-02
Unspecified vulnerability in IBM Java 8 before SR1, 7 R1 before SR2 FP11, 7 before SR9, 6 R1 before SR8 FP4, 6 before SR16 FP4, and 5.0 before SR16 FP10 allows remote attackers to gain privileges via unknown vectors related to the Java Virtual Machine.

CVE-2015-1914
Published: 2015-07-02
IBM Java 7 R1 before SR3, 7 before SR9, 6 R1 before SR8 FP4, 6 before SR16 FP4, and 5.0 before SR16 FP10 allows remote attackers to bypass "permission checks" and obtain sensitive information via vectors related to the Java Virtual Machine.

CVE-2015-1916
Published: 2015-07-02
Unspecified vulnerability in IBM Java 8 before SR1 allows remote attackers to cause a denial of service via unknown vectors related to SSL/TLS and the Secure Socket Extension provider.

CVE-2015-3157
Published: 2015-07-02
** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: none.

CVE-2015-3202
Published: 2015-07-02
fusermount in FUSE before 2.9.3-15 does not properly clear the environment before invoking (1) mount or (2) umount as root, which allows local users to write to arbitrary files via a crafted LIBMOUNT_MTAB environment variable that is used by mount's debugging feature.

Dark Reading Radio
Archived Dark Reading Radio
Marc Spitler, co-author of the Verizon DBIR will share some of the lesser-known but most intriguing tidbits from the massive report