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Fencer Vulns
medium 6.0

CVE-2023-23908 json

Improper access control in some 3rd Generation Intel(R) Xeon(R) Scalable processors may allow a privileged user to potentially enable infor…

published 2023-08-11 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-27991

cvss
6.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

Improper access control in some 3rd Generation Intel(R) Xeon(R) Scalable processors may allow a privileged user to potentially enable information disclosure via local access.

Patch / fix

  • intel microcode 20230808
  • intel-microcode Debian 12 3.20230808.1~deb12u1
  • intel-microcode Debian 14, Debian 13 3.20230808.1

debian advisories DEBIAN-CVE-2023-23908

  • intel-microcode Ubuntu 20.04 LTS 3.20230808.0ubuntu0.20.04.1
  • intel-microcode Ubuntu 22.04 LTS 3.20230808.0ubuntu0.22.04.1
  • intel-microcode Ubuntu 24.04 LTS 3.20230808.1
  • intel-microcode Ubuntu Pro 16.04 LTS 3.20230808.0ubuntu0.16.04.1+esm1
  • intel-microcode Ubuntu Pro 18.04 LTS 3.20230808.0ubuntu0.18.04.1+esm1

ubuntu advisories UBUNTU-CVE-2023-23908

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ucode-intel SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +17 more 20230808-150200.27.1
  • ucode-intel SLES for SAP 12 SP5, SLES 12 SP5 20230808-123.1
  • ucode-intel SLES 12 SP2-BCL 20230808-13.110.1
  • microcode_ctl SLES 11 SP4 LTSS EXTREME CORE 1.17-102.83.81.1
  • ucode-intel SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE High Performance Computing 15 SP1-LTSS 20230808-150100.3.223.1

suse advisories SUSE-SU-2025:1032-1SUSE-SU-2023:3383-1SUSE-SU-2023:3382-1SUSE-SU-2023:3359-1SUSE-SU-2023:3289-1

  • ucode-intel openSUSE Tumbleweed 20230808-1.1

opensuse advisories openSUSE-SU-2024:13115-1

  • intel-ucode Alpine 3.24, Alpine 3.23, Alpine 3.22 +7 more 20230808-r0

alpine advisories ALPINE-CVE-2023-23908

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-23908 updated cvss 6.0

hw: Intel: 3rd Generation processors may allow information disclosure

  • Red Hat Enterprise Linux 6 microcode_ctl
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 7 microcode_ctl Red Hat Enterprise Linux 8 microcode_ctl Red Hat Enterprise Linux 9 microcode_ctl
    affected: no fix available
  • Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
NVD 3.1 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected products

  • n/a 3rd Generation Intel(R) Xeon(R) Scalable processors

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.