# CVE-2020-13844: Information disclosure in n/a > Local attackers can exploit speculative execution flaws in Armv8-A cores to disclose sensitive information via side-channel analysis. - **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:** 8 Jun 2020 - **Updated:** 4 Aug 2024 - **Also known as:** A-216607118, GHSA-jwjh-w2wp-2gvv, PUB-A-216607118, SUSE-SU-2020:2947-1, SUSE-SU-2020:3263-1, SUSE-SU-2020:3749-1, UBUNTU-CVE-2020-13844, openSUSE-SU-2020:1692-1, openSUSE-SU-2020:1693-1, openSUSE-SU-2020:2300-1, openSUSE-SU-2020:2301-1, openSUSE-SU-2024:10702-1 ## What is CVE-2020-13844? CVE-2020-13844 is a medium-severity vulnerability in Opensuse Leap, published on 8 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim. ### Official description Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka "straight-line speculation." Weakness: CWE-203 (Observable Discrepancy) ## Which versions are affected by CVE-2020-13844? It affects 8 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `gcc10` | SUSE:Enterprise Storage 5 | All versions | 10.2.1+git583-1.3.5 | | `gcc10` | SUSE:HPE Helion OpenStack 8 | All versions | 10.2.1+git583-1.3.5 | | `cross-nvptx-gcc10` | SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 10.2.1+git583-1.3.2 | | `cross-nvptx-gcc7` | SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 7.5.0+r278197-4.19.2 | | `gcc10` | SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 10.2.1+git583-1.3.4 | | `gcc7` | SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 7.5.0+r278197-4.19.2 | | `nvptx-tools` | SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 1.0-4.3.2 | | `cross-nvptx-gcc10` | SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 10.2.1+git583-1.3.2 | | `cross-nvptx-gcc7` | SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 7.5.0+r278197-4.19.2 | | `gcc10` | SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 10.2.1+git583-1.3.4 | | `gcc7` | SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 7.5.0+r278197-4.19.2 | | `nvptx-tools` | SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 1.0-4.3.2 | | `gcc10` | SUSE:Linux Enterprise Module for Basesystem 15 SP1 | All versions | 10.2.1+git583-1.3.4 | | `gcc7` | SUSE:Linux Enterprise Module for Basesystem 15 SP1 | All versions | 7.5.0+r278197-4.19.2 | | `gcc10` | SUSE:Linux Enterprise Module for Basesystem 15 SP2 | All versions | 10.2.1+git583-1.3.4 | | `gcc7` | SUSE:Linux Enterprise Module for Basesystem 15 SP2 | All versions | 7.5.0+r278197-4.19.2 | | `cross-nvptx-gcc10` | SUSE:Linux Enterprise Module for Development Tools 15 SP1 | All versions | 10.2.1+git583-1.3.2 | | `cross-nvptx-gcc7` | SUSE:Linux Enterprise Module for Development Tools 15 SP1 | All versions | 7.5.0+r278197-4.19.2 | | `gcc10` | SUSE:Linux Enterprise Module for Development Tools 15 SP1 | All versions | 10.2.1+git583-1.3.4 | | `gcc7` | SUSE:Linux Enterprise Module for Development Tools 15 SP1 | All versions | 7.5.0+r278197-4.19.2 | | `nvptx-tools` | SUSE:Linux Enterprise Module for Development Tools 15 SP1 | All versions | 1.0-4.3.2 | | `cross-nvptx-gcc10` | SUSE:Linux Enterprise Module for Development Tools 15 SP2 | All versions | 10.2.1+git583-1.3.2 | | `cross-nvptx-gcc7` | SUSE:Linux Enterprise Module for Development Tools 15 SP2 | All versions | 7.5.0+r278197-4.19.2 | | `gcc10` | SUSE:Linux Enterprise Module for Development Tools 15 SP2 | All versions | 10.2.1+git583-1.3.4 | | `gcc7` | SUSE:Linux Enterprise Module for Development Tools 15 SP2 | All versions | 7.5.0+r278197-4.19.2 | | `nvptx-tools` | SUSE:Linux Enterprise Module for Development Tools 15 SP2 | All versions | 1.0-4.3.2 | | `cross-nvptx-gcc10` | SUSE:Linux Enterprise Module for Toolchain 12 | All versions | 10.2.1+git583-1.3.1 | | `gcc10` | SUSE:Linux Enterprise Module for Toolchain 12 | All versions | 10.2.1+git583-1.3.5 | | `gcc10` | SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 10.2.1+git583-1.3.5 | | `gcc10` | SUSE:Linux Enterprise Server 12 SP2-LTSS | All versions | 10.2.1+git583-1.3.5 | | `gcc10` | SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 10.2.1+git583-1.3.5 | | `gcc10` | SUSE:Linux Enterprise Server 12 SP3-LTSS | All versions | 10.2.1+git583-1.3.5 | | `gcc10` | SUSE:Linux Enterprise Server 12 SP4-LTSS | All versions | 10.2.1+git583-1.3.5 | | `gcc10` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 10.2.1+git583-1.3.5 | | `cross-nvptx-gcc10` | SUSE:Linux Enterprise Server 15-LTSS | All versions | 10.2.1+git583-1.3.2 | | `cross-nvptx-gcc7` | SUSE:Linux Enterprise Server 15-LTSS | All versions | 7.5.0+r278197-4.19.2 | | `gcc10` | SUSE:Linux Enterprise Server 15-LTSS | All versions | 10.2.1+git583-1.3.4 | | `gcc7` | SUSE:Linux Enterprise Server 15-LTSS | All versions | 7.5.0+r278197-4.19.2 | | `nvptx-tools` | SUSE:Linux Enterprise Server 15-LTSS | All versions | 1.0-4.3.2 | | `gcc10` | SUSE:Linux Enterprise Server for SAP Applications 12 SP2 | All versions | 10.2.1+git583-1.3.5 | Products: Arm Cortex-A32 Firmware, Arm Cortex-A34 Firmware, Arm Cortex-A35 Firmware, Arm Cortex-A53 Firmware, Arm Cortex-A57 Firmware, Arm Cortex-A72 Firmware, Arm Cortex-A73 Firmware, Opensuse Leap. ## How do I fix CVE-2020-13844? Apply the vendor's patch. ## Is CVE-2020-13844 being exploited? There is no known exploitation of CVE-2020-13844 in the wild and no public exploit code. ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2020-13844 and fix it if it is affected. What it is: CVE-2020-13844 is a medium-severity vulnerability in Opensuse Leap, published on 8 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2020-13844 in the wild and no public exploit code. Affected product: Opensuse Leap. 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-2020-13844/ (Markdown: https://insights.sbomify.com/CVE-2020-13844/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2020-13844 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-13844 - OSV: https://osv.dev/vulnerability/CVE-2020-13844 --- From sbomify Insights: https://insights.sbomify.com/CVE-2020-13844/ Summaries are generated and may contain mistakes; the official description above is the record.