# CVE-2020-35738: Integer overflow in n/a > An integer overflow in WavPack leads to an out-of-bounds write, potentially allowing code execution or denial of service when processing malicious audio files. - **Severity:** Medium 6.1 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Local or same network only - **Victim action needed:** A user has to click or open something - **Fix available:** Yes - **Published:** 28 Dec 2020 - **Updated:** 4 Aug 2024 - **Also known as:** DEBIAN-CVE-2020-35738, GHSA-pwmw-jmr6-f7c4, MGASA-2021-0271, OESA-2021-1131, SUSE-SU-2021:0929-1, SUSE-SU-2021:14669-1, UBUNTU-CVE-2020-35738, USN-4682-1 ## What is CVE-2020-35738? CVE-2020-35738 is a medium-severity vulnerability in Debian Debian Linux, published on 28 Dec 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link. ### Official description WavPack 5.3.0 has an out-of-bounds write in WavpackPackSamples in pack_utils.c because of an integer overflow in a malloc argument. NOTE: some third-parties claim that there are later "unofficial" releases through 5.3.2, which are also affected. Weakness: CWE-787 (Out-of-bounds Write), CWE-190 (Integer Overflow or Wraparound) ## Which versions are affected by CVE-2020-35738? It affects 3 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `wavpack` | SUSE:HPE Helion OpenStack 8 | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 4.50.1-1.33.1 | | `wavpack` | SUSE:Linux Enterprise Server 11 SP4-LTSS | All versions | 4.50.1-1.33.1 | | `wavpack` | SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:Linux Enterprise Server 12 SP2-LTSS | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:Linux Enterprise Server 12 SP3-LTSS | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:Linux Enterprise Server 12 SP4-LTSS | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:Linux Enterprise Server for SAP Applications 12 SP2 | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:OpenStack Cloud 7 | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:OpenStack Cloud 8 | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:OpenStack Cloud 9 | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:OpenStack Cloud Crowbar 8 | All versions | 4.60.99-5.9.1 | | `wavpack` | SUSE:OpenStack Cloud Crowbar 9 | All versions | 4.60.99-5.9.1 | Products: Debian Debian Linux, Fedoraproject Fedora, Wavpack Wavpack. ## How do I fix CVE-2020-35738? Upgrade to a fixed version. ## Is CVE-2020-35738 being exploited? There is no known exploitation of CVE-2020-35738 in the wild and no public exploit code. ## Other vulnerabilities in Debian Debian Linux - [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild) - [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild) - [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild) - [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild) - [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2020-35738 and fix it if it is affected. What it is: CVE-2020-35738 is a medium-severity vulnerability in Debian Debian Linux, published on 28 Dec 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link. Exploitation: There is no known exploitation of CVE-2020-35738 in the wild and no public exploit code. Affected product: Debian Debian Linux. 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-2020-35738/ (Markdown: https://insights.sbomify.com/CVE-2020-35738/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2020-35738 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-35738 - OSV: https://osv.dev/vulnerability/CVE-2020-35738 --- From sbomify Insights: https://insights.sbomify.com/CVE-2020-35738/ Summaries are generated and may contain mistakes; the official description above is the record.