# CVE-2017-18926: Memory corruption in n/a > Heap-based buffer overflow in Raptor RDF library allows attackers to execute arbitrary code or cause denial of service via crafted XML input. - **Severity:** High 7.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H`) - **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:** 6 Nov 2020 - **Updated:** 5 Aug 2024 - **Also known as:** AZL-45321, DEBIAN-CVE-2017-18926, DLA-2438-1, DSA-4785-1, GHSA-p2vv-g8rx-7jqj, SUSE-SU-2020:3350-1, SUSE-SU-2020:3351-1, SUSE-SU-2020:3352-1, UBUNTU-CVE-2017-18926, USN-4630-1, openSUSE-SU-2020:1949-1, openSUSE-SU-2020:1959-1, openSUSE-SU-2024:11296-1 ## What is CVE-2017-18926? CVE-2017-18926 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 6 Nov 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 raptor_xml_writer_start_element_common in raptor_xml_writer.c in Raptor RDF Syntax Library 2.0.15 miscalculates the maximum nspace declarations for the XML writer, leading to heap-based buffer overflows (sometimes seen in raptor_qname_format_as_xml). Weakness: CWE-787 (Out-of-bounds Write) ## Which versions are affected by CVE-2017-18926? It affects 3 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `raptor` | SUSE:Enterprise Storage 5 | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:HPE Helion OpenStack 8 | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:Linux Enterprise Module for Desktop Applications 15 SP1 | All versions | 2.0.15-3.3.1 | | `raptor` | SUSE:Linux Enterprise Module for Desktop Applications 15 SP2 | All versions | 2.0.15-9.3.1 | | `raptor` | SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:Linux Enterprise Server 12 SP2-LTSS | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:Linux Enterprise Server 12 SP3-LTSS | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:Linux Enterprise Server 12 SP4-LTSS | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:Linux Enterprise Server for SAP Applications 12 SP2 | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:Linux Enterprise Workstation Extension 12 SP5 | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:OpenStack Cloud 7 | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:OpenStack Cloud 8 | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:OpenStack Cloud 9 | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:OpenStack Cloud Crowbar 8 | All versions | 2.0.15-5.3.1 | | `raptor` | SUSE:OpenStack Cloud Crowbar 9 | All versions | 2.0.15-5.3.1 | | `raptor` | openSUSE:Leap 15.1 | All versions | 2.0.15-lp151.3.3.1 | | `raptor` | openSUSE:Leap 15.2 | All versions | 2.0.15-lp152.4.3.1 | Products: Debian Debian Linux, Fedoraproject Fedora, Librdf Raptor Rdf Syntax Library. ## How do I fix CVE-2017-18926? Apply the vendor's patch. ## Is CVE-2017-18926 being exploited? There is no known exploitation of CVE-2017-18926 in the wild and no public exploit code. ## Other vulnerabilities in Debian Debian Linux - [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild) - [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild) - [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild) - [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild) - [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2017-18926 and fix it if it is affected. What it is: CVE-2017-18926 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 6 Nov 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-2017-18926 in the wild and no public exploit code. Affected product: Debian Debian 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-2017-18926/ (Markdown: https://insights.sbomify.com/CVE-2017-18926/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2017-18926 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-18926 - OSV: https://osv.dev/vulnerability/CVE-2017-18926 --- From sbomify Insights: https://insights.sbomify.com/CVE-2017-18926/ Summaries are generated and may contain mistakes; the official description above is the record.