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CVE-2014-2706

Race condition in the mac80211 subsystem in the Linux kernel before 3.13.7 allows remote attackers to cause a denial of service (system crash) via network traffic that improperly interacts with the WLAN_STA_PS_STA state (aka power-save mode), related to sta_info.c and tx.c.

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Announcing the Enhanced Mitigation Experience Toolkit (EMET) 5.0 Technical Preview

I’m here at the Moscone Center, San Francisco, California, attending the annual RSA Conference USA 2014. There’s a great crowd here and many valuable discussions. Our Microsoft Security Response Center (MSRC) engineering teams have been working hard on the next version of EMET, which helps customers increase the effort attackers must make to compromise a computer system.

CVE-2012-6638

The tcp_rcv_state_process function in net/ipv4/tcp_input.c in the Linux kernel before 3.2.24 allows remote attackers to cause a denial of service (kernel resource consumption) via a flood of SYN+FIN TCP packets, a different vulnerability than CVE-2012-2663.

Software defense: mitigating common exploitation techniques

In our previous posts in this series, we described various mitigation improvements that attempt to prevent the exploitation of specific classes of memory safety vulnerabilities such as those that involve stack corruption, heap corruption, and unsafe list management and reference count mismanagement. These mitigations are typically associated with a specific developer mistake such as writing beyond the bounds of a stack or heap buffer, failing to correctly track reference counts, and so on.

Omphaloskepsis and the December 2013 Security Update Release

There are times when we get too close to a topic. We familiarize ourselves with every aspect and nuance, but fail to recognize not everyone else has done the same. Whether you consider this myopia, navel-gazing, or human nature, the effect is the same. I recognized this during the recent webcast when someone asked the question – “What’s the difference between a security advisory and a security bulletin?

CVE-2013-6383

The aac_compat_ioctl function in drivers/scsi/aacraid/linit.c in the Linux kernel before 3.11.8 does not require the CAP_SYS_RAWIO capability, which allows local users to bypass intended access restrictions via a crafted ioctl call.

Introducing Enhanced Mitigation Experience Toolkit (EMET) 4.1

In June 2013, we released EMET 4.0 and customer response has been fantastic. Many customers across the world now include EMET as part of their defense-in-depth strategy and appreciate how EMET helps businesses prevent attackers from gaining access to computers systems. Today, we’re releasing a new version, EMET 4.1, with updates that simplify configuration and accelerate deployment.

Assessing risk for the October 2013 security updates

Today we released eight security bulletins addressing 25 CVE’s. Four bulletins have a maximum severity rating of Critical while the other four have a maximum severity rating of Important. We hope that the table below helps you prioritize the deployment of the updates appropriately for your environment. Bulletin Most likely attack vector Max Bulletin Severity Max Exploit-ability Likely first 30 days impact Platform mitigations and key notes MS13-080(Internet Explorer) Victim browses to a malicious webpage.

Assessing risk for the August 2013 security updates

Today we released eight security bulletins addressing 23 CVE’s. Three bulletins have a maximum severity rating of Critical while the other five have a maximum severity rating of Important. We hope that the table below helps you prioritize the deployment of the updates appropriately for your environment. Bulletin Most likely attack vector Max Bulletin Severity Max Exploit-ability Index Likely first 30 days impact Platform mitigations and key notes MS13-059(Internet Explorer) Victim browses to a malicious webpage.

CVE-2011-4623: rsyslog/ChangeLog at master · rsyslog/rsyslog

Integer overflow in the rsCStrExtendBuf function in runtime/stringbuf.c in the imfile module in rsyslog 4.x before 4.6.6, 5.x before 5.7.4, and 6.x before 6.1.4 allows local users to cause a denial of service (daemon hang) via a large file, which triggers a heap-based buffer overflow.