# CVE-2015-3418: Denial of service in n/a > Attackers can crash the X.Org Server via a zero-height PutImage request, causing a denial of service. - **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 13 Dec 2016 - **Updated:** 6 Aug 2024 - **Also known as:** DEBIAN-CVE-2015-3418, DLA-120-2, GHSA-p6c2-6v8p-34j6, MGASA-2015-0196, RHBA-2015:1445, UBUNTU-CVE-2015-3418 ## What is CVE-2015-3418? CVE-2015-3418 is a high-severity denial of service vulnerability in X.org X Server, published on 13 Dec 2016. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description The ProcPutImage function in dix/dispatch.c in X.Org Server (aka xserver and xorg-server) before 1.16.4 allows attackers to cause a denial of service (divide-by-zero and crash) via a zero-height PutImage request. Weakness: CWE-369 (Divide By Zero) ## Which versions are affected by CVE-2015-3418? It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `xorg-x11-server` | Red Hat:enterprise_linux:6::client | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xdmx` | Red Hat:enterprise_linux:6::client | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xephyr` | Red Hat:enterprise_linux:6::client | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xnest` | Red Hat:enterprise_linux:6::client | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xorg` | Red Hat:enterprise_linux:6::client | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xvfb` | Red Hat:enterprise_linux:6::client | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-common` | Red Hat:enterprise_linux:6::client | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-debuginfo` | Red Hat:enterprise_linux:6::client | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-devel` | Red Hat:enterprise_linux:6::client | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-source` | Red Hat:enterprise_linux:6::client | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xdmx` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xephyr` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xnest` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xorg` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xvfb` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-common` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-debuginfo` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-devel` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-source` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server` | Red Hat:enterprise_linux:6::server | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xdmx` | Red Hat:enterprise_linux:6::server | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xephyr` | Red Hat:enterprise_linux:6::server | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xnest` | Red Hat:enterprise_linux:6::server | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xorg` | Red Hat:enterprise_linux:6::server | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xvfb` | Red Hat:enterprise_linux:6::server | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-common` | Red Hat:enterprise_linux:6::server | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-debuginfo` | Red Hat:enterprise_linux:6::server | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-devel` | Red Hat:enterprise_linux:6::server | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-source` | Red Hat:enterprise_linux:6::server | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xdmx` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xephyr` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xnest` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xorg` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-Xvfb` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-common` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-debuginfo` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-devel` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.15.0-36.el6 | | `xorg-x11-server-source` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.15.0-36.el6 | Products: X.org X Server. ## How do I fix CVE-2015-3418? Upgrade to a fixed version. ## Is CVE-2015-3418 being exploited? There is no known exploitation of CVE-2015-3418 in the wild and no public exploit code. ## Other vulnerabilities in X.org X Server - [CVE-2026-56000](https://insights.sbomify.com/CVE-2026-56000/): xorg-x11-server / xwayland GLX contextTags Use-After-Free in CommonMakeCurrent() (critical 9.0) - [CVE-2017-10971](https://insights.sbomify.com/CVE-2017-10971/): Memory corruption in n/a (high 8.8) - [CVE-2026-55999](https://insights.sbomify.com/CVE-2026-55999/): xorg-server / xwayland glamor font atlas Heap Buffer Overflow (high 8.5) - [CVE-2022-2319](https://insights.sbomify.com/CVE-2022-2319/): Memory corruption in xorg-x11-server (high 7.8) - [CVE-2022-2320](https://insights.sbomify.com/CVE-2022-2320/): Memory corruption in xorg-x11-server (high 7.8) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2015-3418 and fix it if it is affected. What it is: CVE-2015-3418 is a high-severity denial of service vulnerability in X.org X Server, published on 13 Dec 2016. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2015-3418 in the wild and no public exploit code. Affected product: X.org X Server. 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-2015-3418/ (Markdown: https://insights.sbomify.com/CVE-2015-3418/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2015-3418 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-3418 - OSV: https://osv.dev/vulnerability/CVE-2015-3418 --- From sbomify Insights: https://insights.sbomify.com/CVE-2015-3418/ Summaries are generated and may contain mistakes; the official description above is the record.