Last week, Qualys issued a security advisory for a vulnerability we discovered during a code review of Exim. This vulnerability can lead to Remote Command Injection, and is currently being actively attacked in the wild. This blog will show you how to quickly identify assets that are impacted by this vulnerability.
This month’s Microsoft Patch Tuesday addresses 88 vulnerabilities with 21 of them labeled as Critical. Of the 21 Critical vulns, 17 are for scripting engines and browsers, and 3 are potential hypervisor escapes in Hyper-V. The remaining vulnerability is an RCE in the Microsoft Speech API. Microsoft also issued guidance on Bluetooth Low Energy FIDO keys, HoloLens, and Microsoft Exchange. Adobe issues patches today for Flash, ColdFusion, and Campaign.
This month’s Microsoft Patch Tuesday included a very high-risk vulnerability (CVE-2019-0708, aka BlueKeep) in Remote Desktop that impacts Windows XP, Windows 7, Server 2003, Server 2008, and Server 2008 R2. This vulnerability allows an unauthenticated attacker (or malware) to execute code on the vulnerable system. It is very likely that PoC code will be published soon, and this may result in a WannaCry-style attack.
UPDATE: Network Level Authentication (NLA) partially mitigates this vulnerability. QID 90788 (Microsoft Windows Network Level Authentication Disabled) can be used to find hosts that have NLA disabled. This forces the attacker to have valid credentials in order to perform RCE.
UPDATE: A new remote (unauthenticated) check was released under QID 91541. See below for details.
This month’s Microsoft Patch Tuesday addresses 79 vulnerabilities with 22 of them labeled as Critical. Of the 22 Critical vulns, 18 are for scripting engines and browsers. The remaining 4 are remote code execution (RCE) in Remote Desktop, DHCP Server, GDI+, and Word. Microsoft also released guidance on the recently disclosed Microarchitectural Data Sampling (MDS) techniques, known as ZombieLoad, Fallout, and RIDL. Adobe’s Patch Tuesday includes patches for vulnerabilities in Flash, Acrobat/Reader (83 vulnerabilities!) and Media Encoder.
UPDATE May 15: Microsoft has also issued Remote Desktop patches for Windows XP and Server 2003.
This month’s Patch Tuesday addresses 74 vulnerabilities, with 16 labeled as Critical. Eight of the Critical vulns are for scripting engines and browser components, impacting Microsoft browsers and Office, along with another 5 Critical vulns in MSXML. Two Critical remote code execution (RCE) vulnerabilities are patched in GDI+ and IOleCvt. Two privilege escalation vulns in Win32k are reported as Actively Attacked, while another in the Windows AppX Deployment Service has a public PoC exploit.
This month’s Patch Tuesday addresses 65 vulnerabilities, with 18 of them labeled as Critical. Thirteen of the Critical vulns are for scripting engines and browser components, impacting Microsoft browsers and Office. Three remote code execution (RCE) vulnerabilities are patched in the Windows DHCP Client, as well as an RCE vuln in Windows Deployment Services TFTP Server and Privilege Escalation in Microsoft Dynamics 365. Adobe’s release is light, with only two CVEs patched in Photoshop CC and Digital Editions.
This month’s Patch Tuesday is very large, with 74 vulns being addressed of which 20 are labeled as critical. Fifteen of these critical vulns are in the Scripting Engine and browsers, with the remainder being GDI+, SharePoint, and DHCP. Microsoft also issued an Advisory for an Exchange 0-day, along with a patch for one of the two reported vulns. Adobe also released updates for Acrobat/Reader, Flash, Coldfusion, and Creative Cloud.
This month’s Patch Tuesday is medium in size, with 47 vulns covered and only 7 labeled as Critical. Twenty-six of the vulns apply to Windows Servers and Workstation operating systems. Two of the Criticals apply to Hyper-V and could lead to RCE on the host system. Microsoft also issued and out-of-band patch in December for Internet Explorer 9 through 11 due to active attacks in the wild. Last week, Adobe also released out-of-band patches for Acrobat and Reader covering two Critical vulns.
This month’s Patch Tuesday addresses 39 vulnerabilities, with 9 of them labeled as Critical. Out of the Criticals, most are browser-related, with the rest including Windows, and .net Framework. A Privilege Escalation vulnerability exists in Windows kernel which has been exploited in wild. Adobe also patched 9 Critical and Important vulnerabilities this month for Adobe Acrobat and Reader.
On the basis of volume and severity this Patch Tuesday is light in weight.
Browser and Scripting Engine patches should be prioritized for workstation-type devices, meaning any system that is used for email or to access the internet via a browser. This includes multi-user servers that are used as remote desktops for users. Out of the 9 vulnerabilities, 6 can be exploited through browsers.
Active Attacks on Win32k Privilege Escalation
Microsoft has reported that there are active attacks detected against CVE-2018-8611. Microsoft has ranked this patch as Important. It is important to prioritize Windows kernel patching.
Adobe Patches and Mitigations
Adobe released nine patches for Acrobat/Reader, with 6 rated as critical and 3 as important. In early December, Adobe also released out-of-band patches for Adobe Flash. CVE-2018-15982 is rated as critical and has been exploited in wild. CVE-2018-15983 is labeled as important.
This month’s Patch Tuesday addresses 62 vulnerabilities, with 12 of them labeled as Critical. Out of the Criticals, 8 are for the Chakra Scripting Engine used by Microsoft Edge. A Remote Code Execution vulnerability in Windows Deployment Services’ TFTP server is also addressed in this release. Adobe also patched three Important vulnerabilities this month, although there is a PoC exploit available for Adobe Acrobat and Reader.