# CVE-2019-18906: cryptctl: client side password hashing is equivalent to clear text password storage > Attackers with access to hashed passwords can authenticate directly without cracking them due to weak client-side hashing in cryptctl. - **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 30 Jun 2021 - **Updated:** 16 Sep 2024 - **Also known as:** GHSA-x9cr-r4j4-8ph8, SUSE-SU-2021:2136-1, SUSE-SU-2021:2137-1, openSUSE-SU-2021:0907-1, openSUSE-SU-2021:2136-1, openSUSE-SU-2024:12078-1 ## What is CVE-2019-18906? CVE-2019-18906 is a critical vulnerability in SUSE Linux Enterprise Server for SAP 12-SP5, published on 30 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description A Improper Authentication vulnerability in cryptctl of SUSE Linux Enterprise Server for SAP 12-SP5, SUSE Manager Server 4.0 allows attackers with access to the hashed password to use it without having to crack it. This issue affects: SUSE Linux Enterprise Server for SAP 12-SP5 cryptctl versions prior to 2.4. SUSE Manager Server 4.0 cryptctl versions prior to 2.4. Weakness: CWE-287 (Improper Authentication) ## Which versions are affected by CVE-2019-18906? It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `cryptctl` | SUSE:Enterprise Storage 6 | All versions | 2.4-4.5.1 | | `cryptctl` | SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS | All versions | 2.4-4.5.1 | | `cryptctl` | SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | All versions | 2.4-4.5.1 | | `cryptctl` | SUSE:Linux Enterprise Module for Basesystem 15 SP2 | All versions | 2.4-4.5.1 | | `cryptctl` | SUSE:Linux Enterprise Module for Basesystem 15 SP3 | All versions | 2.4-4.5.1 | | `cryptctl` | SUSE:Linux Enterprise Module for SAP Applications 15 | All versions | 2.4-4.5.1 | | `cryptctl` | SUSE:Linux Enterprise Module for SAP Applications 15 SP1 | All versions | 2.4-4.5.1 | | `cryptctl` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 2.4-2.10.1 | | `cryptctl` | SUSE:Linux Enterprise Server 15 SP1-BCL | All versions | 2.4-4.5.1 | | `cryptctl` | SUSE:Linux Enterprise Server 15 SP1-LTSS | All versions | 2.4-4.5.1 | | `cryptctl` | SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 2.4-2.10.1 | | `cryptctl` | SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 2.4-2.10.1 | | `cryptctl` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 2.4-2.10.1 | | `cryptctl` | SUSE:Linux Enterprise Server for SAP Applications 15 SP1 | All versions | 2.4-4.5.1 | | `cryptctl` | SUSE:Manager Proxy 4.0 | All versions | 2.4-4.5.1 | | `cryptctl` | SUSE:Manager Retail Branch Server 4.0 | All versions | 2.4-4.5.1 | | `cryptctl` | SUSE:Manager Server 4.0 | All versions | 2.4-4.5.1 | | `cryptctl` | openSUSE:Leap 15.2 | All versions | 2.4-lp152.5.3.1 | | `cryptctl` | openSUSE:Leap 15.3 | All versions | 2.4-4.5.1 | | `cryptctl` | openSUSE:Tumbleweed | All versions | 2.4-1.1 | Products: Opensuse Cryptctl. ## How do I fix CVE-2019-18906? Upgrade to a fixed version. ## Is CVE-2019-18906 being exploited? There is no known exploitation of CVE-2019-18906 in the wild and no public exploit code. ## Other vulnerabilities in SUSE Linux Enterprise Server for SAP 12-SP5 - [CVE-2017-9270](https://insights.sbomify.com/CVE-2017-9270/): post-auth arbitrary file write on cryptctl server (high 8.7) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2019-18906 and fix it if it is affected. What it is: CVE-2019-18906 is a critical vulnerability in SUSE Linux Enterprise Server for SAP 12-SP5, published on 30 Jun 2021. 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-2019-18906 in the wild and no public exploit code. Affected product: SUSE Linux Enterprise Server for SAP 12-SP5. 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-2019-18906/ (Markdown: https://insights.sbomify.com/CVE-2019-18906/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2019-18906 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-18906 - OSV: https://osv.dev/vulnerability/CVE-2019-18906 --- From sbomify Insights: https://insights.sbomify.com/CVE-2019-18906/ Summaries are generated and may contain mistakes; the official description above is the record.