# CVE-2020-13558: Use after free in Webkit > A use-after-free flaw in WebKitGTK allows attackers to execute arbitrary code via a specially crafted web page. - **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** A user has to click or open something - **Fix available:** Yes - **Published:** 3 Mar 2021 - **Updated:** 4 Aug 2024 - **Also known as:** DEBIAN-CVE-2020-13558, DSA-4854-1, GHSA-qhvm-2jxc-mqxw, MGASA-2021-0107, SUSE-SU-2021:0536-1, SUSE-SU-2021:0583-1, UBUNTU-CVE-2020-13558, USN-4739-1, openSUSE-SU-2021:0376-1 ## What is CVE-2020-13558? CVE-2020-13558 is a high-severity use after free vulnerability in Webkitgtk Webkitgtk, published on 3 Mar 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. ### Official description A code execution vulnerability exists in the AudioSourceProviderGStreamer functionality of Webkit WebKitGTK 2.30.1. A specially crafted web page can lead to a use after free. Weakness: CWE-416 (Use After Free) ## Which versions are affected by CVE-2020-13558? It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `webkit2gtk3` | SUSE:Enterprise Storage 6 | All versions | 2.30.5-3.66.1 | | `webkit2gtk3` | SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS | All versions | 2.30.5-3.66.1 | | `webkit2gtk3` | SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | All versions | 2.30.5-3.66.1 | | `webkit2gtk3` | SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 2.30.5-3.66.1 | | `webkit2gtk3` | SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 2.30.5-3.66.1 | | `webkit2gtk3` | SUSE:Linux Enterprise Module for Basesystem 15 SP2 | All versions | 2.30.5-3.12.1 | | `webkit2gtk3` | SUSE:Linux Enterprise Module for Desktop Applications 15 SP2 | All versions | 2.30.5-3.12.1 | | `webkit2gtk3` | SUSE:Linux Enterprise Server 15 SP1-BCL | All versions | 2.30.5-3.66.1 | | `webkit2gtk3` | SUSE:Linux Enterprise Server 15 SP1-LTSS | All versions | 2.30.5-3.66.1 | | `webkit2gtk3` | SUSE:Linux Enterprise Server 15-LTSS | All versions | 2.30.5-3.66.1 | | `webkit2gtk3` | SUSE:Linux Enterprise Server for SAP Applications 15 | All versions | 2.30.5-3.66.1 | | `webkit2gtk3` | SUSE:Linux Enterprise Server for SAP Applications 15 SP1 | All versions | 2.30.5-3.66.1 | | `webkit2gtk3` | SUSE:Manager Proxy 4.0 | All versions | 2.30.5-3.66.1 | | `webkit2gtk3` | SUSE:Manager Retail Branch Server 4.0 | All versions | 2.30.5-3.66.1 | | `webkit2gtk3` | SUSE:Manager Server 4.0 | All versions | 2.30.5-3.66.1 | | `webkit2gtk3` | openSUSE:Leap 15.2 | All versions | 2.30.5-lp152.2.10.5 | Products: Webkitgtk Webkitgtk. ## How do I fix CVE-2020-13558? Apply the vendor's patch. ## Is CVE-2020-13558 being exploited? There is no known exploitation of CVE-2020-13558 in the wild and no public exploit code. ## Other vulnerabilities in Webkitgtk Webkitgtk - [CVE-2023-25360](https://insights.sbomify.com/CVE-2023-25360/): Use after free in n/a (high 8.8) - [CVE-2023-25361](https://insights.sbomify.com/CVE-2023-25361/): Use after free in n/a (high 8.8) - [CVE-2023-25362](https://insights.sbomify.com/CVE-2023-25362/): Use after free in n/a (high 8.8) - [CVE-2023-25363](https://insights.sbomify.com/CVE-2023-25363/): Use after free in n/a (high 8.8) - [CVE-2021-21806](https://insights.sbomify.com/CVE-2021-21806/): Use after free in Webkit (high 8.8) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2020-13558 and fix it if it is affected. What it is: CVE-2020-13558 is a high-severity use after free vulnerability in Webkitgtk Webkitgtk, published on 3 Mar 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. Exploitation: There is no known exploitation of CVE-2020-13558 in the wild and no public exploit code. Affected product: Webkitgtk Webkitgtk. 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-2020-13558/ (Markdown: https://insights.sbomify.com/CVE-2020-13558/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2020-13558 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-13558 - OSV: https://osv.dev/vulnerability/CVE-2020-13558 --- From sbomify Insights: https://insights.sbomify.com/CVE-2020-13558/ Summaries are generated and may contain mistakes; the official description above is the record.