# CVE-2016-7545: Privilege escalation in n/a > Local attackers can escape SELinux sandboxes and execute arbitrary commands via a crafted TIOCSTI ioctl call in policycoreutils. - **Severity:** High 8.8 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`) - **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:** 19 Jan 2017 - **Updated:** 6 Aug 2024 - **Also known as:** DEBIAN-CVE-2016-7545, DLA-638-1, GHSA-38gv-g72v-rp63, RHSA-2016:2702, RHSA-2017:0535, RHSA-2017:0536, SUSE-SU-2017:0338-1, SUSE-SU-2017:0339-1, SUSE-SU-2017:0340-1 ## What is CVE-2016-7545? CVE-2016-7545 is a high-severity vulnerability in Fedoraproject Fedora, published on 19 Jan 2017. It can only be exploited from the same machine or local network, with no action from the victim. ### Official description SELinux policycoreutils allows local users to execute arbitrary commands outside of the sandbox via a crafted TIOCSTI ioctl call. Weakness: CWE-284 (Improper Access Control) ## Which versions are affected by CVE-2016-7545? It affects 7 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `policycoreutils` | Red Hat:enterprise_linux:6::client | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-debuginfo` | Red Hat:enterprise_linux:6::client | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-gui` | Red Hat:enterprise_linux:6::client | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-newrole` | Red Hat:enterprise_linux:6::client | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-python` | Red Hat:enterprise_linux:6::client | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-sandbox` | Red Hat:enterprise_linux:6::client | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils` | Red Hat:enterprise_linux:6::computenode | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-debuginfo` | Red Hat:enterprise_linux:6::computenode | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-gui` | Red Hat:enterprise_linux:6::computenode | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-newrole` | Red Hat:enterprise_linux:6::computenode | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-python` | Red Hat:enterprise_linux:6::computenode | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-sandbox` | Red Hat:enterprise_linux:6::computenode | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils` | Red Hat:enterprise_linux:6::server | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-debuginfo` | Red Hat:enterprise_linux:6::server | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-gui` | Red Hat:enterprise_linux:6::server | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-newrole` | Red Hat:enterprise_linux:6::server | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-python` | Red Hat:enterprise_linux:6::server | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-sandbox` | Red Hat:enterprise_linux:6::server | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils` | Red Hat:enterprise_linux:6::workstation | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-debuginfo` | Red Hat:enterprise_linux:6::workstation | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-gui` | Red Hat:enterprise_linux:6::workstation | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-newrole` | Red Hat:enterprise_linux:6::workstation | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-python` | Red Hat:enterprise_linux:6::workstation | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils-sandbox` | Red Hat:enterprise_linux:6::workstation | All versions | 0:2.0.83-30.1.el6_8 | | `policycoreutils` | Red Hat:enterprise_linux:7::client | All versions | 0:2.5-9.el7 | | `policycoreutils-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:2.5-9.el7 | | `policycoreutils-devel` | Red Hat:enterprise_linux:7::client | All versions | 0:2.5-9.el7 | | `policycoreutils-gui` | Red Hat:enterprise_linux:7::client | All versions | 0:2.5-9.el7 | | `policycoreutils-newrole` | Red Hat:enterprise_linux:7::client | All versions | 0:2.5-9.el7 | | `policycoreutils-python` | Red Hat:enterprise_linux:7::client | All versions | 0:2.5-9.el7 | | `policycoreutils-restorecond` | Red Hat:enterprise_linux:7::client | All versions | 0:2.5-9.el7 | | `policycoreutils-sandbox` | Red Hat:enterprise_linux:7::client | All versions | 0:2.5-9.el7 | | `policycoreutils` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.5-9.el7 | | `policycoreutils-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.5-9.el7 | | `policycoreutils-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.5-9.el7 | | `policycoreutils-gui` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.5-9.el7 | | `policycoreutils-newrole` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.5-9.el7 | | `policycoreutils-python` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.5-9.el7 | | `policycoreutils-restorecond` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.5-9.el7 | | `policycoreutils-sandbox` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.5-9.el7 | Products: Fedoraproject Fedora, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Hpc Node, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Tus, Redhat Enterprise Linux Workstation, Selinux Project Selinux. ## How do I fix CVE-2016-7545? Apply the vendor's patch. ## Is CVE-2016-7545 being exploited? There is no known exploitation of CVE-2016-7545 in the wild and no public exploit code. ## Other vulnerabilities in Fedoraproject Fedora - [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild) - [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild) - [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild) - [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild) - [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2016-7545 and fix it if it is affected. What it is: CVE-2016-7545 is a high-severity vulnerability in Fedoraproject Fedora, published on 19 Jan 2017. 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-2016-7545 in the wild and no public exploit code. Affected product: Fedoraproject Fedora. 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-2016-7545/ (Markdown: https://insights.sbomify.com/CVE-2016-7545/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2016-7545 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-7545 - OSV: https://osv.dev/vulnerability/CVE-2016-7545 --- From sbomify Insights: https://insights.sbomify.com/CVE-2016-7545/ Summaries are generated and may contain mistakes; the official description above is the record.