# CVE-2023-20593: Information disclosure in 2nd Gen AMD EPYC™ Processors > An attacker can potentially access sensitive information from AMD Zen 2 CPUs due to specific microarchitectural circumstances. - **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Local or same network only - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 24 Jul 2023 - **Updated:** 13 Feb 2025 - **Also known as:** ALPINE-CVE-2023-20593, ALSA-2023:5068, ALSA-2023:5245, BELL-CVE-2023-20593, CLSA-2023-1692108914, CLSA-2023-1692109552, CLSA-2023-1692109896, CLSA-2023-1692110278, CLSA-2023-1692110711, CLSA-2023-1692110951, DEBIAN-CVE-2023-20593, DSA-5459-1, DSA-5462-1, MGASA-2023-0242, MGASA-2023-0244, RHSA-2023:5591, RHSA-2023:7665, SUSE-SU-2023:2986-1, SUSE-SU-2023:3001-1, SUSE-SU-2023:3019-1, SUSE-SU-2023:3020-1, SUSE-SU-2023:3022-1, SUSE-SU-2023:3206-1, SUSE-SU-2024:0884-1, SUSE-SU-2024:0885-1, UBUNTU-CVE-2023-20593, USN-6244-1, openSUSE-SU-2024:13080-1, openSUSE-SU-2024:13095-1, openSUSE-SU-2024:13105-1, openSUSE-SU-2024:13183-1 ## What is CVE-2023-20593? CVE-2023-20593 is a medium-severity vulnerability in Amd Epyc 7232p Firmware, published on 24 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim. ### Official description An issue in “Zen 2” CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access sensitive information. Weakness: CWE-209 (Generation of Error Message Containing Sensitive Information) ## Which versions are affected by CVE-2023-20593? It affects 71 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `iwl100-firmware` | AlmaLinux:8 | All versions | 39.31.5.1-117.el8_8.1.alma.1 | | `iwl1000-firmware` | AlmaLinux:8 | All versions | 1:39.31.5.1-117.el8_8.1.alma.1 | | `iwl105-firmware` | AlmaLinux:8 | All versions | 18.168.6.1-117.el8_8.1.alma.1 | | `iwl135-firmware` | AlmaLinux:8 | All versions | 18.168.6.1-117.el8_8.1.alma.1 | | `iwl2000-firmware` | AlmaLinux:8 | All versions | 18.168.6.1-117.el8_8.1.alma.1 | | `iwl2030-firmware` | AlmaLinux:8 | All versions | 18.168.6.1-117.el8_8.1.alma.1 | | `iwl3160-firmware` | AlmaLinux:8 | All versions | 1:25.30.13.0-117.el8_8.1.alma.1 | | `iwl3945-firmware` | AlmaLinux:8 | All versions | 15.32.2.9-117.el8_8.1.alma.1 | | `iwl4965-firmware` | AlmaLinux:8 | All versions | 228.61.2.24-117.el8_8.1.alma.1 | | `iwl5000-firmware` | AlmaLinux:8 | All versions | 8.83.5.1_1-117.el8_8.1.alma.1 | | `iwl5150-firmware` | AlmaLinux:8 | All versions | 8.24.2.2-117.el8_8.1.alma.1 | | `iwl6000-firmware` | AlmaLinux:8 | All versions | 9.221.4.1-117.el8_8.1.alma.1 | | `iwl6000g2a-firmware` | AlmaLinux:8 | All versions | 18.168.6.1-117.el8_8.1.alma.1 | | `iwl6000g2b-firmware` | AlmaLinux:8 | All versions | 18.168.6.1-117.el8_8.1.alma.1 | | `iwl6050-firmware` | AlmaLinux:8 | All versions | 41.28.5.1-117.el8_8.1.alma.1 | | `iwl7260-firmware` | AlmaLinux:8 | All versions | 1:25.30.13.0-117.el8_8.1.alma.1 | | `libertas-sd8686-firmware` | AlmaLinux:8 | All versions | 20230404-117.git2e92a49f.el8_8.alma.1 | | `libertas-sd8787-firmware` | AlmaLinux:8 | All versions | 20230404-117.git2e92a49f.el8_8.alma.1 | | `libertas-usb8388-firmware` | AlmaLinux:8 | All versions | 2:20230404-117.git2e92a49f.el8_8.alma.1 | | `libertas-usb8388-olpc-firmware` | AlmaLinux:8 | All versions | 20230404-117.git2e92a49f.el8_8.alma.1 | | `linux-firmware` | AlmaLinux:8 | All versions | 20230404-117.git2e92a49f.el8_8.alma.1 | | `iwl100-firmware` | AlmaLinux:9 | All versions | 39.31.5.1-135.el9_2.alma.1 | | `iwl1000-firmware` | AlmaLinux:9 | All versions | 1:39.31.5.1-135.el9_2.alma.1 | | `iwl105-firmware` | AlmaLinux:9 | All versions | 18.168.6.1-135.el9_2.alma.1 | | `iwl135-firmware` | AlmaLinux:9 | All versions | 18.168.6.1-135.el9_2.alma.1 | | `iwl2000-firmware` | AlmaLinux:9 | All versions | 18.168.6.1-135.el9_2.alma.1 | | `iwl2030-firmware` | AlmaLinux:9 | All versions | 18.168.6.1-135.el9_2.alma.1 | | `iwl3160-firmware` | AlmaLinux:9 | All versions | 1:25.30.13.0-135.el9_2.alma.1 | | `iwl5000-firmware` | AlmaLinux:9 | All versions | 8.83.5.1_1-135.el9_2.alma.1 | | `iwl5150-firmware` | AlmaLinux:9 | All versions | 8.24.2.2-135.el9_2.alma.1 | | `iwl6000g2a-firmware` | AlmaLinux:9 | All versions | 18.168.6.1-135.el9_2.alma.1 | | `iwl6000g2b-firmware` | AlmaLinux:9 | All versions | 18.168.6.1-135.el9_2.alma.1 | | `iwl6050-firmware` | AlmaLinux:9 | All versions | 41.28.5.1-135.el9_2.alma.1 | | `iwl7260-firmware` | AlmaLinux:9 | All versions | 1:25.30.13.0-135.el9_2.alma.1 | | `libertas-sd8787-firmware` | AlmaLinux:9 | All versions | 20230310-135.el9_2.alma.1 | | `linux-firmware` | AlmaLinux:9 | All versions | 20230310-135.el9_2.alma.1 | | `linux-firmware-whence` | AlmaLinux:9 | All versions | 20230310-135.el9_2.alma.1 | | `netronome-firmware` | AlmaLinux:9 | All versions | 20230310-135.el9_2.alma.1 | | `iwl100-firmware` | Red Hat:rhel_aus:8.2::baseos | All versions | 0:39.31.5.1-100.el8_2.1 | | `iwl1000-firmware` | Red Hat:rhel_aus:8.2::baseos | All versions | 1:39.31.5.1-100.el8_2.1 | Products: Amd Athlon Gold 7220u Firmware, Amd Epyc 7232p Firmware, Amd Epyc 7252 Firmware, Amd Epyc 7262 Firmware, Amd Epyc 7272 Firmware, Amd Epyc 7282 Firmware, Amd Epyc 7302 Firmware, Amd Epyc 7302p Firmware, Amd Epyc 7352 Firmware, Amd Epyc 7402 Firmware, Amd Epyc 7402p Firmware, Amd Epyc 7452 Firmware, Amd Epyc 7502 Firmware, Amd Epyc 7502p Firmware, Amd Epyc 7532 Firmware, Amd Epyc 7542 Firmware, Amd Epyc 7552 Firmware, Amd Epyc 7642 Firmware, Amd Epyc 7662 Firmware, Amd Epyc 7702 Firmware and 51 more. ## How do I fix CVE-2023-20593? Apply the vendor's patch. ## Is CVE-2023-20593 being exploited? It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-20593 exists. Public exploit code: - LoongBleed (aka LoongLeak) is a hardware vulnerability similar to ZenBleed (CVE-2023-20593) affecting Loongson LA464/LA664 processors. (github_poc): https://github.com/jiegec/LoongBleed - PowerShell script to apply Zenbleed (CVE-2023-20593) MSR workaround on Windows (github_poc): https://github.com/sbaresearch/stop-zenbleed-win ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2023-20593 and fix it if it is affected. What it is: CVE-2023-20593 is a medium-severity vulnerability in Amd Epyc 7232p Firmware, published on 24 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim. Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-20593 exists. Affected product: Amd Epyc 7232p Firmware. No package-level version data is available, so check the vendor advisory linked from the reference page. Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2023-20593/ (Markdown: https://insights.sbomify.com/CVE-2023-20593/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2023-20593 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-20593 - OSV: https://osv.dev/vulnerability/CVE-2023-20593 --- From sbomify Insights: https://insights.sbomify.com/CVE-2023-20593/ Summaries are generated and may contain mistakes; the official description above is the record.