# CVE-2020-15011: Code injection in n/a > Attackers can inject arbitrary content via the private archive login page, potentially leading to code execution in GNU Mailman installations. - **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N`) - **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:** 24 Jun 2020 - **Updated:** 4 Aug 2024 - **Also known as:** DLA-2265-1, GHSA-fvg8-xwx7-9x5m, SUSE-SU-2020:14423-1, SUSE-SU-2020:2048-1, UBUNTU-CVE-2020-15011, USN-4406-1 ## What is CVE-2020-15011? CVE-2020-15011 is a medium-severity code injection vulnerability in Canonical Ubuntu Linux, published on 24 Jun 2020. 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 GNU Mailman before 2.1.33 allows arbitrary content injection via the Cgi/private.py private archive login page. Weakness: CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component) ## Which versions are affected by CVE-2020-15011? It affects 3 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `mailman` | SUSE:Enterprise Storage 5 | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:HPE Helion OpenStack 8 | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 2.1.15-9.6.26.1 | | `mailman` | SUSE:Linux Enterprise Server 11 SP4-LTSS | All versions | 2.1.15-9.6.26.1 | | `mailman` | SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:Linux Enterprise Server 12 SP2-LTSS | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:Linux Enterprise Server 12 SP3-LTSS | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:Linux Enterprise Server 12 SP4-LTSS | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:Linux Enterprise Server for SAP Applications 12 SP2 | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:OpenStack Cloud 7 | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:OpenStack Cloud 8 | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:OpenStack Cloud 9 | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:OpenStack Cloud Crowbar 8 | All versions | 2.1.17-3.23.1 | | `mailman` | SUSE:OpenStack Cloud Crowbar 9 | All versions | 2.1.17-3.23.1 | Products: Canonical Ubuntu Linux, Debian Debian Linux, Gnu Mailman. ## How do I fix CVE-2020-15011? Upgrade to a fixed version. ## Is CVE-2020-15011 being exploited? There is no known exploitation of CVE-2020-15011 in the wild and no public exploit code. ## Other vulnerabilities in Canonical Ubuntu Linux - [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild) - [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild) - [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild) - [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild) - [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2020-15011 and fix it if it is affected. What it is: CVE-2020-15011 is a medium-severity code injection vulnerability in Canonical Ubuntu Linux, published on 24 Jun 2020. 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-2020-15011 in the wild and no public exploit code. Affected product: Canonical Ubuntu 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-2020-15011/ (Markdown: https://insights.sbomify.com/CVE-2020-15011/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2020-15011 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-15011 - OSV: https://osv.dev/vulnerability/CVE-2020-15011 --- From sbomify Insights: https://insights.sbomify.com/CVE-2020-15011/ Summaries are generated and may contain mistakes; the official description above is the record.