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AZURE CLI CREDENTIAL LEAK PART OF MICROSOFT'S MONTHLY PATCH ROLLUP

By Richard Chirgwin

Nov 15 2023 11:47AM



SEVERAL BUGS ALREADY EXPLOITED.

Microsoft’s regular patch day includes patches for zero-days and bugs already
under exploitation, along with three vulnerabilities rated critical.



One of the critical vulnerabilities, CVE-2023-36052, is important enough to
receive a detailed technical discussion in this blog post. 

The bug leaks credentials to GitHub Actions logs through the Azure command-line
interface (CLI).



Aviad Hahami of Palo Alto’s Prisma Cloud found that Azure CLI commands could be
used to show sensitive data and output to continuous integration and continuous
deployment (CI/CD) logs, Microsoft explained.

As well as making changes to “Azure Pipelines, GitHub Actions, and Azure CLI” to
improve secret redaction, Microsoft gives customer guidance to help avoid
revealing secrets through the CLI.



The other two critical vulnerabilities are CVE-2023-36400 and CVE-2023-36397.

CVE-2023-36400 gives an attacker privilege escalation via Windows hash-based
message authentication code (HMAC) key derivation, available to an attacker
already logged into the system.

“A successful attack could be performed from a low privilege Hyper-V guest. The
attacker could traverse the guest's security boundary to execute code on the
Hyper-V host execution environment,” Microsoft said.

This would give the attacker SYSTEM privileges.

CVE-2023-36397 is a remote code execution (RCE) vulnerability if Pragmatic
General Multicast (PGM) server is running a message queuing service.



“An attacker could send a specially crafted file over the network to achieve
remote code execution and attempt to trigger malicious code,” Microsoft’s
advisory stated.

The exploited vulnerabilities include CVE-2023-36036, CVE-2023-36025, and
CVE-2023-36033.

CVE-2023-36033, an elevation of privilege vulnerability in the Windows desktop
window manager (DWM) core library, only has a CVSS score of 7.8, but was
disclosed prior to this patch, and has been exploited to give attackers SYSTEM
privileges.

CVE-2023-36036 is a bug in the Windows Cloud mini filter driver, once again
exploited to escalate an attacker to SYSTEM privileges.

CVE-2023-36025 is a security bypass bug in Windows Smart Screen, exploited if an
attacker can get a victim to click on a crafted URL, or a link pointing to an
Internet shortcut file.

As the SANS Institute’s Johannes Ullrich explains in his Patch Tuesday rollup,
Microsoft has also shipped patches for the third-party Kubernetes, FRRouting,
Traceroute and PyYAML packages used in its Mariner Linux distribution.

Got a news tip for our journalists? Share it with us anonymously here.

Copyright © iTnews.com.au . All rights reserved.
Tags:
azuremicrosoftpatch tuesdaysecurity



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