It's the week of Hacker Summer Camp in Las Vegas, and Microsoft has published fixes for 141 separate vulnerabilities in their swath of August updates. This is a new monthly record by raw CVE count, but from a patching perspective, the numbers are slightly less dire. 20 CVEs affect their Chromium-based Edge browser, and 34 affect Azure Site Recovery (up from 32 CVEs affecting that product last month). As usual, OS-level updates will address a lot of these, but note that some extra configuration is required to fully protect Exchange Server this month.
There is one 0-day being patched this month. CVE-2022-34713 is a remote code execution (RCE) vulnerability affecting the Microsoft Windows Support Diagnostic Tool (MSDT) – it carries a CVSSv3 base score of 7.8, as it requires convincing a potential victim to open a malicious file. The advisory indicates that this CVE is a variant of the “Dogwalk” vulnerability, which made news alongside Follina (CVE-2022-30190) back in May.
Publicly disclosed, but not (yet) exploited is CVE-2022-30134, an Information Disclosure vulnerability affecting Exchange Server. In this case, simply patching is not sufficient to protect against attackers being able to read targeted email messages. Administrators should enable Extended Protection in order to fully remediate this vulnerability, as well as the patch tuesday august