Security

FortinetSecurity

Fortinet Security Researcher Discovers Two Critical Vulnerabilities in Adobe Flash Player

Fortinet security researcher Kai Lu discovered and reported two critical zero-day vulnerabilities in Adobe Flash Player in November 2016. Adobe identified them as CVE-2017-2926 and CVE-2017-2927 and released a patch to fix them on January 10, 2017. Here is a brief summary of each of these detected vulnerabilities. CVE-2017-2926 This is a memory corruption vulnerability found in Flash Player’s engine when processing MP4 files. Specifically, the vulnerability is caused by a MP4 file with a crafted sample size in the MP4 atom…

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FortinetSecurity

Analysis of ISC BIND TKEY Query Response Handling DoS (CVE-2016-9131)


Another TKEY record-related bug in BIND has been fixed with a patch from the Internet Systems Consortium (ISC) that was released just after the New Year. This bug may take down BIND recursive servers by sending a simple query response with TKEY record, thereby causing a denial of service (DoS). This potential DoS vulnerability is caused by an assertion failure in Resolver.c when caching the DNS response with TKEY Record. In this post we will analyze the BIND source codes and expose the root cause of this vulnerability. The TKEY record…

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