title: Arbitrary Memory Disclosure through CPU Side-Channel Attacks (Retbleed)
description: Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can hijack return instructions to achieve arbitrary speculative code execution under certain microarchitecture-dependent conditions.
problem types: CWE-200 Information Exposure
affected:
{
vendor: Intel
product: Intel Microprocessors
versions:
version: generations 6 to 8, status: affected
}
metrics:
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
attackVector: LOCAL
attackComplexity: HIGH
privilegesRequired: LOW
userInteraction: NONE
scope: CHANGED
confidentialityImpact: HIGH
integrityImpact: NONE
availabilityImpact: NONE
baseScore: 5.6
baseSeverity: MEDIUM
]