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xorg-x11-server

A heap buffer overflow flaw was found in the DisableDevice function in the X.Org server. This issue may lead to an application crash or, in some circumstances, remote code execution in SSH X11 forwarding environments.

CVE-2024-21886 identifies a heap-based buffer overflow vulnerability in the DisableDevice function within the X.Org server, specifically affecting version 1.21.1.7. The vulnerability arises from improper handling of memory buffers when disabling devices, leading to an overflow condition on the heap. This flaw can cause the affected application to crash, resulting in denial of service. More critically, in environments where SSH X11 forwarding is used, the vulnerability may be exploited to achieve remote code execution, allowing an attacker to execute arbitrary code with the privileges of the affected process. The attack vector requires local access with low privileges (AV:L), low attack complexity (AC:L), and privileges (PR:L), but no user interaction (UI:N). The scope remains unchanged (S:U), and the impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H). Although no public exploits are known at this time, the vulnerability poses a significant risk due to the widespread use of X.Org in Unix-like operating systems and the common use of SSH X11 forwarding in remote access scenarios. The vulnerability was reserved in early January 2024 and published in late February 2024, indicating recent discovery and disclosure. No patches or exploit indicators are currently listed, emphasizing the need for vigilance and timely updates once fixes become available.

Detailed information about CVE-2024-21886: Heap-based Buffer Overflow. Get real-time updates, technical details, and mitigation strategies.

CVE-2024-21886: Heap-based Buffer Overflow - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2024-21886: Heap-based Buffer Overflow

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