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Security Advisory: Temporary file vulnerability due to Adobe Reader (Linux, Solaris, HP-UX, IBM-AIX)

Advisory Name: Temporary file vulnerability due to Adobe Reader

Release Date: July 05, 2005

Product: Adobe Reader 5.0.9, 5.0.10

Platform: Linux, Solaris, HP-UX, IBM-AIX

Vulnerability Identifier: CAN-2005-1841

Overview: A vulnerability within Adobe Reader has been identified. Under special circumstances, temporary files with elevated permissions are created when PDF documents are opened using Adobe Reader.

Adobe has solutions available that can rectify these issues. Please refer to the "Recommendations" section for further information.

Effect: If exploited, this vulnerability could make it possible for malicious, local users to view other users' PDF documents.

Details: The vulnerability is within the Adobe Reader control. When a PDF file is opened using Adobe Reader, randomly generated temporary files are created in the temporary folder. These temporary files could have elevated permissions based on the user's umask (permissions). However these temporary files are deleted when the actual PDF document is closed.

Recommendations:

Do one of the following:

-- If you use Adobe Reader 5.0.9 or 5.0.10 on Linux or Solaris, download Adobe Reader 7.0 at www.adobe.com/products/acrobat/readstep2.html

-- If you use Adobe Reader 5.0.9 or 5.0.10 on IBM-AIX or HP-UX, download Adobe Reader 5.0.11 at www.adobe.com/products/acrobat/readstep2.html

Caveats: None

Vulnerability Identifier Cross-Reference: CVE ID: CAN-2005-1841

Acknowledgment: Adobe would like to thank Secunia, for reporting the issue.

Adobe Disclaimer

License agreement

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The export and re-export of Adobe software products are controlled by the United States Export Administration Regulations and such software may not be exported or re-exported to Cuba; Iran; Iraq; Libya; North Korea; Sudan; or Syria or any country to which the United States embargoes goods. In addition; Adobe software may not be distributed to persons on the Table of Denial Orders; the Entity List; or the List of Specially Designated Nationals.

By downloading or using an Adobe software product you are certifying that you are not a national of Cuba; Iran; Iraq; Libya; North Korea; Sudan; or Syria or any country to which the United States embargoes goods and that you are not a person on the Table of Denial Orders; the Entity List; or the List of Specially Designated Nationals.

If the software is designed for use with an application software product (the "Host Application") published by Adobe; Adobe grants you a non-exclusive license to use such software with the Host Application only; provided you possess a valid license from Adobe for the Host Application. Except as set forth below; such software is licensed to you subject to the terms and conditions of the End User License Agreement from Adobe governing your use of the Host Application.

DISCLAIMER OF WARRANTIES: YOU AGREE THAT ADOBE HAS MADE NO EXPRESS WARRANTIES TO YOU REGARDING THE SOFTWARE AND THAT THE SOFTWARE IS BEING PROVIDED TO YOU "AS IS" WITHOUT WARRANTY OF ANY KIND. ADOBE DISCLAIMS ALL WARRANTIES WITH REGARD TO THE SOFTWARE; EXPRESS OR IMPLIED; INCLUDING; WITHOUT LIMITATION; ANY IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE; MERCHANTABILITY; MERCHANTABLE QUALITY OR NONINFRINGEMENT OF THIRD PARTY RIGHTS. Some states or jurisdictions do not allow the exclusion of implied warranties; so the above limitations may not apply to you.

LIMIT OF LIABILITY: IN NO EVENT WILL ADOBE BE LIABLE TO YOU FOR ANY LOSS OF USE; INTERRUPTION OF BUSINESS; OR ANY DIRECT; INDIRECT; SPECIAL; INCIDENTAL; OR CONSEQUENTIAL DAMAGES OF ANY KIND (INCLUDING LOST PROFITS) REGARDLESS OF THE FORM OF ACTION WHETHER IN CONTRACT; TORT (INCLUDING NEGLIGENCE); STRICT PRODUCT LIABILITY OR OTHERWISE; EVEN IF ADOBE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Some states or jurisdictions do not allow the exclusion or limitation of incidental or consequential damages; so the above limitation or exclusion may not apply to you.

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