Privilege escalation lets an attacker gain elevated access, which can enable data theft or system control; least privilege and patching limit impact.
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Background for this topic.
Privilege escalation is gaining access beyond the permissions assigned to an account, process, or service. Vertical escalation moves from a lower-privileged role to an administrator or system account; horizontal escalation accesses another user’s resources at a similar privilege level. Attack paths include software vulnerabilities, insecure authorization checks, exposed credentials, unsafe service configurations, and excessive permissions in operating systems, applications, cloud environments, or containers.
Successful escalation can let an attacker change security settings, access protected data, execute code as a trusted service, or establish control that survives an initial compromise. The most relevant defenses are least-privilege access, strong separation of administrative accounts, server-side authorization checks for every sensitive action, timely remediation of exploitable flaws, and review of permissions for users, services, and workloads. Logging privileged actions and unusual account or process behavior supports detection and helps determine whether a compromised low-privilege foothold reached higher-value systems.
cPanel has released updates to address three vulnerabilities in cPanel and Web Host Manager (WHM) that could be exploited to achieve privilege escalation, code execution, and denial-of-service
No Patches Yet Available, After Third Party Published Vulnerability DetailsSecurity researchers have discovered a new, critical flaw in the Linux kernel that attackers can exploit to gain root access. No patches are yet available to fix "Dirty Frag," the second new local privilege escalation flaw to be found in two weeks, following the similar "Copy Fail" vulnerability.
Dirty Frag is a newly disclosed Linux local privilege escalation vulnerability affecting kernel networking and memory-fragment handling components including esp4, esp6, and rxrpc. The vulnerability enables reliable escalation from an unprivileged user to root and may be leveraged after initial compromise through SSH access, web shells, containers, or low-privileged accounts. Microsoft Defender is actively monitoring limited in-the-wild activity and provides detection coverage for exploitation attempts. The post Active attack: Dirty Frag Linux vulnerability expands post-compromise risk appeared first on Microsoft Security Blog.
Details have emerged about a new, unpatched local privilege escalation (LPE) vulnerability impacting the Linux kernel