The announce@openoffice.apache.org list is the list of record for security advisories from the Apache OpenOffice project, along with its use for other announcements from the project.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 CVE-2016-1513 <http://cve.mitre.org/cgi-bin/cvename.cgi?name=2016-1513> Apache OpenOffice Advisory <https://www.openoffice.org/security/cves/CVE-2016-1513.html> Title: Memory Corruption Vulnerability (Impress Presentations) Version 1.0 Announced July 21, 2016 Description An OpenDocument Presentation .ODP or Presentation Template .OTP file can contain invalid presentation elements that lead to memory corruption when the document is loaded in Apache OpenOffice Impress. The defect may cause the document to appear as corrupted and OpenOffice may crash in a recovery- stuck mode. A crafted exploitation of the defect can allow an attacker to cause denial of service (memory corruption and application crash) and possible execution of arbitrary code. Severity: Medium There are no known exploits of this vulnerability. A proof-of-concept demonstration exists. Vendor: The Apache Software Foundation Versions Affected: All Apache OpenOffice versions 4.1.2 and older are affected. OpenOffice.org versions are also affected. Mitigation: There is no updated download currently available to mitigate this vulnerability. Until a hot fix or maintenance release is available, users should be vigilant and employ workarounds. A source-code patch that blocks the vulnerability has been developed and is available for developers at <https://bz.apache.org/ooo/show_bug.cgi?id=127045>. Antivirus products can detect documents attempting to exploit this vulnerability by employing Snort Signature IDs 35828-35829. Defenses and Work-Arounds: For defects such as those involved in CVE-2016-1513, documents can be crafted to cause memory corruption enough to crash Apache OpenOffice Impress. However, the conditions under which arbitrary code can be executed are complex and difficult to achieve in an undetected manner. An important layer of defense for all such cases is to avoid operating Apache OpenOffice (and any other personal productivity programs) under a computer account that has administrative privileges of any kind. While installation of Apache OpenOffice requires elevated privileges and user permission on platforms such as Microsoft Windows, operation of the software does not. Keeping antivirus/antimalware software current is also important. This will serve to identify and distinguish suspicious documents that involve the exploit, avoiding confusion with documents that are damaged and/or fail for other reasons. Impress cannot be used to directly produce documents having the CVE-2016-1513-related defect. Impress-authored .ODP and .OTP documents of an user's own that exhibit any of these characteristics are not the result of an exploit. They may be consequences of a separate Impress defect that should be reported. For .ODP and .OTP files from unknown or suspicious sources, any automatic closing on opening or failing of OpenOffice Impress can be checked by opening the file in an OpenDocument Presentation application that is not vulnerable to the defective document formatting involved in CVE-2016-1513. Current releases of LibreOffice and Microsoft Office PowerPoint (for .ODP files), including PowerPoint Online, are known to avoid the defect. Other ODF-supporting software may be successful. The resulting presentation may appear corrupted or incomplete and need not reflect an actual exploit attempt. Saving the document as a new presentation file will be exploit-free either way. To report a suspicious document from an external source and for which OpenOffice Impress crashes, preserve the file exactly and report to <mailto:secur...@openoffice.apache.org>. Await further instructions for submission of the file itself. Do not post files having suspected exploits to mailing lists, the issue-reporting system, or any other public location. Further Information: For additional information and assistance, consult the Apache OpenOffice Community Forums, <https://forum.openoffice.org/> or make requests to the <mailto:us...@openoffice.apache.org> public mailing list. Defects not involving suspected security vulnerabilities can be reported via <http://www.openoffice.org/qa/issue_handling/pre_submission.html>. The latest information on Apache OpenOffice security bulletins can be found at the Bulletin Archive page <http://www.openoffice.org/security/bulletin.html>. Credits: The Apache OpenOffice project acknowledges the discovery and analysis for CVE-2016-1513 by Yves Younan and Richard Johnson of Cisco Talos. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJXkCdsAAoJEPluif/UVmKKxLMH/3UwkVym0fzS46XNGm1TxO+H RWzEZWnDaR3QUmDHkOasAacEtFdkEBxRSg/iE4Cwnlpp+Bx52HOCZq8ArQQZeTEJ cRwKuj/5eVha/Kcf1JiXQ8EnFs4WbNl6zssKG9MTLB20AJ+5JhFwPxWeca1KlTXP E6Ib0gj1WONmJBRG6zXfAyrreGlT3dj4Yz0UECtTY3UCaVBt8JjdG65DNHc/UjxH a4IZ/cL4JLKV/9lEEo80xng7dq6tLsbPl2Z0PnC0jqm74Tl+UQe0NYYdWAaFa+ZQ MtT8VdwKpW0jSeOWa4lDcLSrLcgsyHTGbqZtppvyR/whb/4yzeeXPu+pbIelnWo= =CyAD -----END PGP SIGNATURE-----
