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A use-after-free vulnerability was discovered in EDK II (CVE-2019-14586) that affects system firmware. The vulnerability was disclosed on August 3, 2019, and allows authenticated users with adjacent access to potentially exploit the system. The affected component is EDK II, which is firmware used in virtual machines (CVE Mitre, Ubuntu Security).
The vulnerability has been assigned a CVSS 3.1 base score of 8.0 (High severity). The attack vector is adjacent, requiring low attack complexity and low privileges, with no user interaction needed. The scope is unchanged, but the vulnerability can impact confidentiality, integrity, and availability, all rated as high (Ubuntu Security).
The vulnerability can lead to multiple severe consequences including escalation of privilege, information disclosure, and denial of service. Given the high CVSS ratings for confidentiality, integrity, and availability impacts, successful exploitation could significantly compromise affected systems (CVE Mitre, Ubuntu Security).
The vulnerability requires adjacent access and low privileges for exploitation. An authenticated user with adjacent network access could potentially exploit this vulnerability, though no known exploits in the wild have been publicly reported (Ubuntu Security).
Multiple vendors have released patches to address this vulnerability. Ubuntu has fixed the issue in versions 19.10 (0~20190606.20d2e5a1-2ubuntu1.1), 18.04 LTS (0~20180205.c0d9813c-2ubuntu0.2), and 16.04 LTS (0~20160408.ffea0a2c-2ubuntu0.1). Debian has also addressed the vulnerability in various releases including bullseye, bookworm, and trixie (Ubuntu Security, Debian Security).
Source: This report was generated using AI
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