# CVE-2018-10908: Denial of service in vdsm > An attacker can cause a denial of service by uploading a crafted image that exhausts host resources via qemu-img, affecting virtualization hosts. - **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 9 Aug 2018 - **Updated:** 5 Aug 2024 - **Also known as:** GHSA-c34h-7mjf-54vf, RHEA-2018:2624 ## What is CVE-2018-10908? CVE-2018-10908 is a medium-severity denial of service vulnerability in Redhat Virtualization, published on 9 Aug 2018. Any signed-in user can exploit it over the network, with no action from the victim. ### Official description It was found that vdsm before version 4.20.37 invokes qemu-img on untrusted inputs without limiting resources. By uploading a specially crafted image, an attacker could cause the qemu-img process to consume unbounded amounts of memory of CPU time, causing a denial of service condition that could potentially impact other users of the host. Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling), CWE-20 (Improper Input Validation) ## Which versions are affected by CVE-2018-10908? It affects 2 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `vdsm` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-api` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-client` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-common` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-gluster` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-hook-checkips` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-hook-cpuflags` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-hook-ethtool-options` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-hook-extra-ipv4-addrs` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-hook-fcoe` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-hook-localdisk` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-hook-macspoof` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-hook-nestedvt` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-hook-openstacknet` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-hook-vhostmd` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-hook-vmfex-dev` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-http` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-jsonrpc` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-network` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-python` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | | `vdsm-yajsonrpc` | Red Hat:enterprise_linux:7::hypervisor | All versions | 0:4.20.39-1.el7ev | Products: Ovirt Vdsm, Redhat Virtualization. ## How do I fix CVE-2018-10908? Upgrade to a fixed version. ## Is CVE-2018-10908 being exploited? There is no known exploitation of CVE-2018-10908 in the wild and no public exploit code. ## Other vulnerabilities in Redhat Virtualization - [CVE-2012-5518](https://insights.sbomify.com/CVE-2012-5518/): Auth bypass in vdsm (high 7.5) - [CVE-2019-3831](https://insights.sbomify.com/CVE-2019-3831/): Privilege escalation in vdsm (medium 6.4) - [CVE-2022-0207](https://insights.sbomify.com/CVE-2022-0207/): Race condition in vdsm (medium 4.7) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2018-10908 and fix it if it is affected. What it is: CVE-2018-10908 is a medium-severity denial of service vulnerability in Redhat Virtualization, published on 9 Aug 2018. Any signed-in user can exploit it over the network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2018-10908 in the wild and no public exploit code. Affected product: Redhat Virtualization. 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-2018-10908/ (Markdown: https://insights.sbomify.com/CVE-2018-10908/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2018-10908 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-10908 - OSV: https://osv.dev/vulnerability/CVE-2018-10908 --- From sbomify Insights: https://insights.sbomify.com/CVE-2018-10908/ Summaries are generated and may contain mistakes; the official description above is the record.