# CVE-2019-17498: Integer overflow in n/a > An integer overflow in libssh2 allows a malicious SSH server to disclose sensitive information or cause a denial of service on the client. - **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/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:** 21 Oct 2019 - **Updated:** 14 Oct 2026 - **Also known as:** ALPINE-CVE-2019-17498, AZL-6650, DEBIAN-CVE-2019-17498, DLA-1991-1, GHSA-h2hf-mx7w-fhwm, JLSEC-2025-188, MGASA-2019-0343, RHSA-2020:3915, SUSE-RU-2023:4192-1, SUSE-SU-2019:14206-1, SUSE-SU-2019:14226-1, SUSE-SU-2019:2900-1, SUSE-SU-2019:2900-2, SUSE-SU-2019:2936-1, UBUNTU-CVE-2019-17498, openSUSE-SU-2019:2483-1 ## What is CVE-2019-17498? CVE-2019-17498 is a high-severity vulnerability in Debian Debian Linux, published on 21 Oct 2019. 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 In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server. Weakness: CWE-190 (Integer Overflow or Wraparound) ## Which versions are affected by CVE-2019-17498? It affects 10 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `libssh2` | Red Hat:enterprise_linux:7::client | All versions | 0:1.8.0-4.el7 | | `libssh2-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:1.8.0-4.el7 | | `libssh2-devel` | Red Hat:enterprise_linux:7::client | All versions | 0:1.8.0-4.el7 | | `libssh2-docs` | Red Hat:enterprise_linux:7::client | All versions | 0:1.8.0-4.el7 | | `libssh2` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.8.0-4.el7 | | `libssh2-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.8.0-4.el7 | | `libssh2-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.8.0-4.el7 | | `libssh2-docs` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.8.0-4.el7 | | `libssh2` | Red Hat:enterprise_linux:7::server | All versions | 0:1.8.0-4.el7 | | `libssh2-debuginfo` | Red Hat:enterprise_linux:7::server | All versions | 0:1.8.0-4.el7 | | `libssh2-devel` | Red Hat:enterprise_linux:7::server | All versions | 0:1.8.0-4.el7 | | `libssh2-docs` | Red Hat:enterprise_linux:7::server | All versions | 0:1.8.0-4.el7 | | `libssh2` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.8.0-4.el7 | | `libssh2-debuginfo` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.8.0-4.el7 | | `libssh2-devel` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.8.0-4.el7 | | `libssh2-docs` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.8.0-4.el7 | | `libssh2_org` | SUSE:Enterprise Storage 5 | All versions | 1.4.3-20.14.1 | | `libssh2_org` | SUSE:Enterprise Storage 7.1 | All versions | 1.11.0-150000.4.19.1 | | `libssh2_org` | SUSE:HPE Helion OpenStack 8 | All versions | 1.4.3-20.14.1 | | `libssh2_org` | SUSE:Linux Enterprise Desktop 12 SP4 | All versions | 1.4.3-20.14.1 | | `libssh2_org` | SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | All versions | 1.11.0-150000.4.19.1 | | `libssh2_org` | SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 1.11.0-150000.4.19.1 | | `libssh2_org` | SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOS | All versions | 1.11.0-150000.4.19.1 | | `libssh2_org` | SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | All versions | 1.11.0-150000.4.19.1 | | `libssh2_org` | SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 1.8.0-4.10.1 | | `libssh2_org` | SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 1.8.0-4.10.1 | | `libssh2_org` | SUSE:Linux Enterprise Micro 5.1 | All versions | 1.11.0-150000.4.19.1 | | `libssh2_org` | SUSE:Linux Enterprise Micro 5.2 | All versions | 1.11.0-150000.4.19.1 | | `libssh2_org` | SUSE:Linux Enterprise Micro 5.3 | All versions | 1.11.0-150000.4.19.1 | | `libssh2_org` | SUSE:Linux Enterprise Micro 5.4 | All versions | 1.11.0-150000.4.19.1 | | `libssh2_org` | SUSE:Linux Enterprise Micro 5.5 | All versions | 1.11.0-150000.4.19.1 | | `libssh2_org` | SUSE:Linux Enterprise Module for Basesystem 15 | All versions | 1.8.0-4.10.1 | | `libssh2_org` | SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 1.11.0-150000.4.19.1 | | `libssh2_org` | SUSE:Linux Enterprise Module for Basesystem 15 SP5 | All versions | 1.11.0-150000.4.19.1 | | `libssh2_org` | SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 1.2.9-4.2.12.18.1 | | `libssh2_org` | SUSE:Linux Enterprise Server 11 SP4-LTSS | All versions | 1.4.3-17.12.1 | | `libssh2_org` | SUSE:Linux Enterprise Server 12 SP1-LTSS | All versions | 1.4.3-20.14.1 | | `libssh2_org` | SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 1.4.3-20.14.1 | | `libssh2_org` | SUSE:Linux Enterprise Server 12 SP2-LTSS | All versions | 1.4.3-20.14.1 | | `libssh2_org` | SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 1.4.3-20.14.1 | Products: Debian Debian Linux, Fedoraproject Fedora, Libssh2 Libssh2, Netapp Active Iq Unified Manager, Netapp Bootstrap Os, Netapp Element Software, Netapp Hci Management Node, Netapp Ontap Select Deploy Administration Utility, Netapp Solidfire, Opensuse Leap. ## How do I fix CVE-2019-17498? Upgrade to a fixed version. ## Is CVE-2019-17498 being exploited? There is no known exploitation of CVE-2019-17498 in the wild and no public exploit code. Public exploit code: - Secure coding project, research on CVE-2019-17498 and implement a player score function written in C. (github_poc): https://github.com/Timon-L/3007Project ## 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-2019-17498 and fix it if it is affected. What it is: CVE-2019-17498 is a high-severity vulnerability in Debian Debian Linux, published on 21 Oct 2019. 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-2019-17498 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-2019-17498/ (Markdown: https://insights.sbomify.com/CVE-2019-17498/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2019-17498 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-17498 - OSV: https://osv.dev/vulnerability/CVE-2019-17498 --- From sbomify Insights: https://insights.sbomify.com/CVE-2019-17498/ Summaries are generated and may contain mistakes; the official description above is the record.