Microsoft Windows Server 2003 R2 IIS 6.0 Remote Code Execution Technical Analysis and Solution

On March 37, Zhiniang Peng and Chen Wu disclosed the Internet Information Services (IIS) 6.0 WebDAV remote code execution vulnerability, which has been assigned CVE-2017-7269 and CNNVD-201703-1151. This vulnerability, which could cause buffer overflows, is associated with the ScStoragePathFromUrl function in the WebDAV service in IIS 6.0 in Microsoft Windows Server 2003 R2. 阅读全文 “Microsoft Windows Server 2003 R2 IIS 6.0 Remote Code Execution Technical Analysis and Solution” »

Dahua Cameras Unauthorized Access Vulnerability Technical Analysis and Solution

Recently, Dahua Technology, a well-known security camera and digital video recorder (DVR) vendor in China, released firmware updates to address a serious security issue in certain products. Before the vendor made an official statement on this issue, however, a security researcher named Bashis said that this vulnerability seemed to be a backdoor intentionally left by the vendor and so made his findings public without notifying Dahua in advance. 阅读全文 “Dahua Cameras Unauthorized Access Vulnerability Technical Analysis and Solution” »

OpenSSH Remote Denial-of-Service Vulnerability Technical Analysis and Solution

OpenSSH contains a memory exhaustion issue during key exchange. An unauthenticated client can increase the memory allocated to each connection on the server to 384 MB, by repeating the KEXINIT process. An attacker can exploit this vulnerability by initiating multiple connections, to exhaust memory resources of the server and therefore lead to a denial of service.

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ISC BIND 9 Denial-of-Service Technical Analysis and Solution

Internet Systems Consortium (ISC) officially released a security advisory to announce a vulnerability (CVE-2016-2776) and its fixing. The vulnerability exists in buffer.c. When constructing a response packet for a specially crafted query request, BIND will encounter an assertion failure, causing the program to crash and therefore a denial of service.

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MySQL Remote Code Execution/Privilege Escalation Vulnerability Technical Analysis and Solution

On September 12, 2016, legalhackers.com released a security advisory concerning a 0-day vulnerability that is assigned CVE-2016-6662. This vulnerability allows attackers to remotely inject malicious settings into a MySQL configuration file (my.cnf), leading to critical consequences. It affects MySQL servers in default configuration in all version branches (5.7, 5.6, and 5.5), including the latest versions. MySQL clones like MariaDB and PerconaDB are also affected. 阅读全文 “MySQL Remote Code Execution/Privilege Escalation Vulnerability Technical Analysis and Solution” »