# CVE-2018-10858: Memory corruption in samba > A malicious Samba server can trigger a heap-buffer overflow in Samba clients, leading to arbitrary code execution on the client system. - **Severity:** Medium 4.3 (`CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L`) - **Exploited in the wild:** Not known - **Login needed:** An administrator - **Attackable:** Over the internet - **Victim action needed:** A user has to click or open something - **Fix available:** Yes - **Published:** 22 Aug 2018 - **Updated:** 5 Aug 2024 - **Also known as:** ALPINE-CVE-2018-10858, DEBIAN-CVE-2018-10858, ECHO-d03e-1f78-2a94, GHSA-76v4-f6wg-3fqw, SUSE-SU-2018:2319-1, SUSE-SU-2018:2320-1, SUSE-SU-2018:2320-2, SUSE-SU-2018:2329-1, UBUNTU-CVE-2018-10858 ## What is CVE-2018-10858? CVE-2018-10858 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 22 Aug 2018. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link. ### Official description A heap-buffer overflow was found in the way samba clients processed extra long filename in a directory listing. A malicious samba server could use this flaw to cause arbitrary code execution on a samba client. Samba versions before 4.6.16, 4.7.9 and 4.8.4 are vulnerable. Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer), CWE-20 (Improper Input Validation) ## Which versions are affected by CVE-2018-10858? It affects 8 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `samba` | SUSE:Enterprise Storage 4 | All versions | 4.4.2-38.20.1 | | `samba` | SUSE:Enterprise Storage 5 | All versions | 4.6.14+git.157.c2d53c2b191-3.29.1 | | `samba` | SUSE:Linux Enterprise Desktop 12 SP3 | All versions | 4.6.14+git.157.c2d53c2b191-3.29.1 | | `samba` | SUSE:Linux Enterprise High Availability Extension 12 SP2 | All versions | 4.4.2-38.20.1 | | `samba` | SUSE:Linux Enterprise High Availability Extension 12 SP3 | All versions | 4.6.14+git.157.c2d53c2b191-3.29.1 | | `samba` | SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 3.6.3-94.14.2 | | `samba-doc` | SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 3.6.3-94.14.2 | | `samba` | SUSE:Linux Enterprise Server 11 SP3-LTSS | All versions | 3.6.3-94.14.2 | | `samba-doc` | SUSE:Linux Enterprise Server 11 SP3-LTSS | All versions | 3.6.3-94.14.2 | | `samba` | SUSE:Linux Enterprise Server 11 SP3-TERADATA | All versions | 3.6.3-94.14.2 | | `samba-doc` | SUSE:Linux Enterprise Server 11 SP3-TERADATA | All versions | 3.6.3-94.14.2 | | `samba` | SUSE:Linux Enterprise Server 11 SP4 | All versions | 3.6.3-94.14.2 | | `samba-doc` | SUSE:Linux Enterprise Server 11 SP4 | All versions | 3.6.3-94.14.2 | | `samba` | SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 4.4.2-38.20.1 | | `samba` | SUSE:Linux Enterprise Server 12 SP2-LTSS | All versions | 4.4.2-38.20.1 | | `samba` | SUSE:Linux Enterprise Server 12 SP3 | All versions | 4.6.14+git.157.c2d53c2b191-3.29.1 | | `samba` | SUSE:Linux Enterprise Server for SAP Applications 11 SP4 | All versions | 3.6.3-94.14.2 | | `samba-doc` | SUSE:Linux Enterprise Server for SAP Applications 11 SP4 | All versions | 3.6.3-94.14.2 | | `samba` | SUSE:Linux Enterprise Server for SAP Applications 12 SP2 | All versions | 4.4.2-38.20.1 | | `samba` | SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 4.6.14+git.157.c2d53c2b191-3.29.1 | | `samba` | SUSE:Linux Enterprise Software Development Kit 11 SP4 | All versions | 3.6.3-94.14.2 | | `samba` | SUSE:Linux Enterprise Software Development Kit 12 SP3 | All versions | 4.6.14+git.157.c2d53c2b191-3.29.1 | | `samba` | SUSE:OpenStack Cloud 7 | All versions | 4.4.2-38.20.1 | Products: Canonical Ubuntu Linux, Debian Debian Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Workstation, Redhat Virtualization, Redhat Virtualization Host, Samba Samba. ## How do I fix CVE-2018-10858? Upgrade to a fixed version. ## Is CVE-2018-10858 being exploited? There is no known exploitation of CVE-2018-10858 in the wild and no public exploit code. ## Other vulnerabilities in Canonical Ubuntu Linux - [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild) - [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild) - [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild) - [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild) - [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2018-10858 and fix it if it is affected. What it is: CVE-2018-10858 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 22 Aug 2018. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link. Exploitation: There is no known exploitation of CVE-2018-10858 in the wild and no public exploit code. Affected product: Canonical Ubuntu 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-2018-10858/ (Markdown: https://insights.sbomify.com/CVE-2018-10858/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2018-10858 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-10858 - OSV: https://osv.dev/vulnerability/CVE-2018-10858 --- From sbomify Insights: https://insights.sbomify.com/CVE-2018-10858/ Summaries are generated and may contain mistakes; the official description above is the record.