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Debian LTS: Security Advisory for amd64-microcode (DLA-2743-1)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'amd64-microcode' package(s) announced via the DLA-2743-1 advisory.
Insight
Insight
It was discovered that systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis (Spectre v2). Multiple fixes were done already in Linux kernel, intel-microcode, et al. This fix adds amd-microcode-based IBPB support.
Affected Software
Affected Software
'amd64-microcode' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For Debian 9 stretch, this problem has been fixed in version 3.20181128.1~deb9u1. We recommend that you upgrade your amd64-microcode packages.