# CVE-2019-3833: Denial of service in openwsman > Remote unauthenticated attackers can cause denial of service in OpenWSMan servers by sending specially crafted HTTP requests that trigger an infinite loop. - **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:** 14 Mar 2019 - **Updated:** 4 Aug 2024 - **Also known as:** ALSA-2020:4689, AZL-36970, AZL-37152, GHSA-6gg2-jx5v-58c2, RHSA-2020:3940, RHSA-2020:4689, RLSA-2020:4689, UBUNTU-CVE-2019-3833 ## What is CVE-2019-3833? CVE-2019-3833 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 14 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description Openwsman, versions up to and including 2.6.9, are vulnerable to infinite loop in process_connection() when parsing specially crafted HTTP requests. A remote, unauthenticated attacker can exploit this vulnerability by sending malicious HTTP request to cause denial of service to openwsman server. Weakness: CWE-835 (Loop with Unreachable Exit Condition) ## Which versions are affected by CVE-2019-3833? It affects 3 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `libwsman-devel` | AlmaLinux:8 | All versions | 2.6.5-7.el8 | | `libwsman1` | AlmaLinux:8 | All versions | 2.6.5-7.el8 | | `openwsman-client` | AlmaLinux:8 | All versions | 2.6.5-7.el8 | | `openwsman-python3` | AlmaLinux:8 | All versions | 2.6.5-7.el8 | | `openwsman-server` | AlmaLinux:8 | All versions | 2.6.5-7.el8 | | `libwsman-devel` | Red Hat:enterprise_linux:7::client | All versions | 0:2.6.3-7.git4391e5c.el7 | | `libwsman1` | Red Hat:enterprise_linux:7::client | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman` | Red Hat:enterprise_linux:7::client | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-client` | Red Hat:enterprise_linux:7::client | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-perl` | Red Hat:enterprise_linux:7::client | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-python` | Red Hat:enterprise_linux:7::client | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-ruby` | Red Hat:enterprise_linux:7::client | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-server` | Red Hat:enterprise_linux:7::client | All versions | 0:2.6.3-7.git4391e5c.el7 | | `libwsman-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.6.3-7.git4391e5c.el7 | | `libwsman1` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-client` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-perl` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-python` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-ruby` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-server` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.6.3-7.git4391e5c.el7 | | `libwsman-devel` | Red Hat:enterprise_linux:7::server | All versions | 0:2.6.3-7.git4391e5c.el7 | | `libwsman1` | Red Hat:enterprise_linux:7::server | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman` | Red Hat:enterprise_linux:7::server | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-client` | Red Hat:enterprise_linux:7::server | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-debuginfo` | Red Hat:enterprise_linux:7::server | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-perl` | Red Hat:enterprise_linux:7::server | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-python` | Red Hat:enterprise_linux:7::server | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-ruby` | Red Hat:enterprise_linux:7::server | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-server` | Red Hat:enterprise_linux:7::server | All versions | 0:2.6.3-7.git4391e5c.el7 | | `libwsman-devel` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.6.3-7.git4391e5c.el7 | | `libwsman1` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-client` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-debuginfo` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-perl` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-python` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.6.3-7.git4391e5c.el7 | | `openwsman-ruby` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.6.3-7.git4391e5c.el7 | Products: Fedoraproject Fedora, Opensuse Leap, Openwsman Project Openwsman. ## How do I fix CVE-2019-3833? Apply the vendor's patch. ## Is CVE-2019-3833 being exploited? There is no known exploitation of CVE-2019-3833 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-2019-3833 and fix it if it is affected. What it is: CVE-2019-3833 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 14 Mar 2019. 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-2019-3833 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-2019-3833/ (Markdown: https://insights.sbomify.com/CVE-2019-3833/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2019-3833 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-3833 - OSV: https://osv.dev/vulnerability/CVE-2019-3833 --- From sbomify Insights: https://insights.sbomify.com/CVE-2019-3833/ Summaries are generated and may contain mistakes; the official description above is the record.