# CVE-2020-8013: permissions: chkstat sets unintended setuid/capabilities for mrsh and wodim > chkstat erroneously follows symlinks, potentially setting unintended setuid or capabilities on other binaries, allowing local privilege escalation. - **Severity:** Low 2.2 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Local or same network only - **Victim action needed:** A user has to click or open something - **Fix available:** Yes - **Published:** 2 Mar 2020 - **Updated:** 16 Sep 2024 - **Also known as:** GHSA-g26j-xpv7-cfwg, SUSE-RU-2020:0603-1, SUSE-RU-2020:14304-1, SUSE-SU-2020:0545-1, SUSE-SU-2020:14304-1 ## What is CVE-2020-8013? CVE-2020-8013 is a low-severity path traversal vulnerability in Opensuse Leap, published on 2 Mar 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 A UNIX Symbolic Link (Symlink) Following vulnerability in chkstat of SUSE Linux Enterprise Server 12, SUSE Linux Enterprise Server 15, SUSE Linux Enterprise Server 11 set permissions intended for specific binaries on other binaries because it erroneously followed symlinks. The symlinks can't be controlled by attackers on default systems, so exploitation is difficult. This issue affects: SUSE Linux Enterprise Server 12 permissions versions prior to 2015.09.28.1626-17.27.1. SUSE Linux Enterprise Server 15 permissions versions prior to 20181116-9.23.1. SUSE Linux Enterprise Server 11 permissions versions prior to 2013.1.7-0.6.12.1. Weakness: CWE-59 (Improper Link Resolution Before File Access) ## Which versions are affected by CVE-2020-8013? It affects 2 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `permissions` | SUSE:Enterprise Storage 5 | All versions | 2015.09.28.1626-17.27.1 | | `permissions` | SUSE:HPE Helion OpenStack 8 | All versions | 2015.09.28.1626-17.27.1 | | `permissions` | SUSE:Linux Enterprise Desktop 12 SP4 | All versions | 20170707-3.21.1 | | `permissions` | SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 2013.1.7-0.6.12.1 | | `permissions` | SUSE:Linux Enterprise Server 11 SP4-LTSS | All versions | 2013.1.7-0.6.12.1 | | `permissions` | SUSE:Linux Enterprise Server 11 SP4-LTSS | All versions | 2013.1.7-0.6.12.1 | | `permissions` | SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 2015.09.28.1626-17.27.1 | | `permissions` | SUSE:Linux Enterprise Server 12 SP2-LTSS | All versions | 2015.09.28.1626-17.27.1 | | `permissions` | SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 2015.09.28.1626-17.27.1 | | `permissions` | SUSE:Linux Enterprise Server 12 SP3-LTSS | All versions | 2015.09.28.1626-17.27.1 | | `permissions` | SUSE:Linux Enterprise Server 12 SP4 | All versions | 20170707-3.21.1 | | `permissions` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 20170707-3.21.1 | | `permissions` | SUSE:Linux Enterprise Server for SAP Applications 12 SP2 | All versions | 2015.09.28.1626-17.27.1 | | `permissions` | SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 2015.09.28.1626-17.27.1 | | `permissions` | SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 20170707-3.21.1 | | `permissions` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 20170707-3.21.1 | | `permissions` | SUSE:OpenStack Cloud 7 | All versions | 2015.09.28.1626-17.27.1 | | `permissions` | SUSE:OpenStack Cloud 8 | All versions | 2015.09.28.1626-17.27.1 | | `permissions` | SUSE:OpenStack Cloud Crowbar 8 | All versions | 2015.09.28.1626-17.27.1 | Products: Opensuse Leap, Suse Linux Enterprise Server. ## How do I fix CVE-2020-8013? Apply the vendor's patch. ## Is CVE-2020-8013 being exploited? There is no known exploitation of CVE-2020-8013 in the wild and no public exploit code. ## Other vulnerabilities in Opensuse Leap - [CVE-2015-4902](https://insights.sbomify.com/CVE-2015-4902/): Oracle Java SE Integrity Check (medium 5.3, exploited in the wild) - [CVE-2017-14804](https://insights.sbomify.com/CVE-2017-14804/): package builds could use directory traversal to write outside of target area (critical 9.9) - [CVE-2019-20787](https://insights.sbomify.com/CVE-2019-20787/): Teeworlds before 0.7.4 has an integer overflow when computing a tilemap size. (critical 9.8) - [CVE-2019-8341](https://insights.sbomify.com/CVE-2019-8341/): Code injection in n/a (critical 9.8) - [CVE-2019-6438](https://insights.sbomify.com/CVE-2019-6438/): Other in n/a (critical 9.8) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2020-8013 and fix it if it is affected. What it is: CVE-2020-8013 is a low-severity path traversal vulnerability in Opensuse Leap, published on 2 Mar 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-2020-8013 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-2020-8013/ (Markdown: https://insights.sbomify.com/CVE-2020-8013/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2020-8013 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-8013 - OSV: https://osv.dev/vulnerability/CVE-2020-8013 --- From sbomify Insights: https://insights.sbomify.com/CVE-2020-8013/ Summaries are generated and may contain mistakes; the official description above is the record.