ZDI-23-980: Linux Kernel ksmbd Out-Of-Bounds Read Information Disclosure Vulnerability

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This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel. Authentication may or may not be required to exploit this vulnerability, depending upon configuration. Furthermore, only systems with ksmbd enabled are vulnerable.

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Multiple Vulnerabilities in Adobe ColdFusion Could Allow for Arbitrary Code Execution

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Multiple vulnerabilities have been discovered in Adobe ColdFusion, the most severe of which could allow for arbitrary code execution. Adobe ColdFusion is a commercial web-application development platform designed to build and deploy web applications. Successful exploitation of the most severe of these vulnerabilities could allow for arbitrary code execution in the context of the logged on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

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Multiple Vulnerabilities in Google Chrome Could Allow for Arbitrary Code Execution

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Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could allow for arbitrary code execution. Google Chrome is a web browser used to access the internet. Successful exploitation of the most severe of these vulnerabilities could allow for arbitrary code execution in the context of the logged on user. Depending on the privileges associated with the user an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

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Multiple Vulnerabilities in Citrix Products Could Allow for Remote Code Execution

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Multiple vulnerabilities have been discovered in Citrix products, the most severe of which could allow for remote code execution. Citrix ADC performs application-specific traffic analysis to intelligently distribute, optimize, and secure Layer 4 – Layer 7 network traffic for web applications. Citrix Gateway is used to consolidate remote access infrastructure and provide single sign-on across all applications whether in a data center, in a cloud, or if the apps are delivered as SaaS apps. Depending on the privileges associated with the user an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

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CVE-2022-28736

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There’s a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn’t support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2’s memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.

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CVE-2022-28735

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The GRUB2’s shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.

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CVE-2022-28734

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Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP request, writing a NULL byte past the buffer. It’s conceivable that an attacker controlled set of packets can lead to corruption of the GRUB2’s internal memory metadata.

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CVE-2022-28733

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Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.

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