A vulnerability in OpenSSL could allow a remote attacker to expose sensitive data, possibly including user authentication credentials and secret keys, through incorrect memory handling in the TLS heartbeat extension.
Description
OpenSSL versions 1.0.1 through 1.0.1f contain a flaw in its implementation of the TLS/DTLS heartbeat functionality. This flaw allows an attacker to retrieve private memory of an application that uses the vulnerable OpenSSL library in chunks of 64k at a time. Note that an attacker can repeatedly leverage the vulnerability to retrieve as many 64k chunks of memory as are necessary to retrieve the intended secrets. The sensitive information that may be retrieved using this vulnerability include:
Primary key material (secret keys)
Secondary key material (user names and passwords used by vulnerable services)
Protected content (sensitive data used by vulnerable services)
Collateral (memory addresses and content that can be leveraged to bypass exploit mitigations)
This flaw allows a remote attacker to retrieve private memory of an application that uses the vulnerable OpenSSL library in chunks of 64k at a time.
Solution
OpenSSL 1.0.1g has been released to address this vulnerability. Any keys generated with a vulnerable version of OpenSSL should be considered compromised and regenerated and deployed after the patch has been applied.
US-CERT recommends system administrators consider implementing Perfect Forward Secrecy to mitigate the damage that may be caused by future private key disclosures.
Severity Rating: Critical Revision Note: V1.0 (April 8, 2014): Bulletin published. Summary: This security update resolves one publicly disclosed vulnerability and two privately reported vulnerabilities in Microsoft Office. The most severe of these vulnerabilities could allow remote code execution if a specially crafted file is opened or previewed in an affected version of Microsoft Office software. An attacker who successfully exploited these vulnerabilities could gain the same user rights as the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
Severity Rating: Important Revision Note: V1.0 (April 8, 2014): Bulletin published. Summary: This security update resolves a privately reported vulnerability in Microsoft Office. The vulnerability could allow remote code execution if a user opens a specially crafted file in an affected version of Microsoft Publisher. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
A vulnerability in Microsoft Word 2010 can allow Remote Code Execution if a user opens a malicious RTF file or previews / opens a malicious RTF email message in Microsoft Outlook while utilizing Microsoft Word as the email viewer (default for Outlook 2007, 2010 and 2013). X-Force is aware of this vulnerability being exploited in targeted attacks. A common attack vector to exploit such vulnerabilities is to send spear-phishing emails with a malicious document attached that lures the receiver to view the document thereby making them think it is from a trusted correspondent and in regards to something that is urgent or of high interest.
Cross-site scripting (XSS) vulnerability in cdef.php in Cacti 0.8.7g, 0.8.8b, and earlier allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
Apache HTTP Server 2.2.27 Released
The Apache Software Foundation and the Apache HTTP Server Project are
pleased to announce the release of version 2.2.27 of the Apache HTTP
Server ("Apache"). This version of Apache is principally a security
and bug fix maintenance release.
CVE-2014-0098 (cve.mitre.org)
Segfaults with truncated cookie logging.
mod_log_config: Prevent segfaults when logging truncated
cookies. Clean up the cookie logging parser to recognize
only the cookie=value pairs, not valueless cookies.
CVE-2013-6438 (cve.mitre.org)
mod_dav: Keep track of length of cdata properly when removing
leading spaces. Eliminates a potential denial of service from
specifically crafted DAV WRITE requests
We consider the Apache HTTP Server 2.4 release to be the best version
of Apache available, and encourage users of 2.2 and all prior
versions to upgrade. This 2.2 maintenance release is offered for
those unable to upgrade at this time. For further details, see:
http://www.apache.org/dist/httpd/Announcement2.4.txt
Apache HTTP Server 2.4 and 2.2.27 are available for download from:
http://httpd.apache.org/download.cgi
Please see the CHANGES_2.2 file, linked from the download page, for a
full list of changes. A condensed list, CHANGES_2.2.27 includes only
those changes introduced since the prior 2.2 release. A summary of
all of the security vulnerabilities addressed in this and earlier
releases is available:
http://httpd.apache.org/security/vulnerabilities_22.html
This release includes the Apache Portable Runtime (APR) version 1.5.0
and APR Utility Library (APR-util) version 1.5.3, bundled with the
tar and zip distributions. The APR libraries libapr and libaprutil
(and on Win32, libapriconv version 1.2.1) must all be updated to
ensure binary compatibility and address many known security and
platform bugs. APR version 1.5 and APR-util version 1.5 represent
minor version upgrades from earlier httpd 2.2 source distributions.
This release builds on and extends the Apache 2.0 API and is
superceeded by the Apache 2.4 API. Modules written for Apache 2.0
or 2.4 will need to be recompiled in order to run with Apache 2.2,
and most will require minimal or no source code changes.
When upgrading or installing this version of Apache, please bear in
mind that if you intend to use Apache with one of the threaded MPMs
(other than the Prefork MPM), you must ensure that any modules you
will be using (and the libraries they depend on) are thread-safe.
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