# CVE-2018-1062: Information disclosure in oVirt > Privileged users of a new VM may access sensitive data from a previously deleted VM's disk due to incomplete zeroing when specific disk flags are enabled. - **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N`) - **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:** 6 Mar 2018 - **Updated:** 17 Sep 2024 - **Also known as:** GHSA-j45v-g64g-45w2, RHBA-2018:0135 ## What is CVE-2018-1062? CVE-2018-1062 is a medium-severity vulnerability in oVirt, published on 6 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim. ### Official description A vulnerability was discovered in oVirt 4.1.x before 4.1.9, where the combination of Enable Discard and Wipe After Delete flags for VM disks managed by oVirt, could cause a disk to be incompletely zeroed when removed from a VM. If the same storage blocks happen to be later allocated to a new disk attached to another VM, potentially sensitive data could be revealed to privileged users of that VM. Weakness: CWE-212 (Improper Removal of Sensitive Information Before Storage or Transfer) ## Which versions are affected by CVE-2018-1062? It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `ovirt-engine` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-backend` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-dbscripts` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-extensions-api-impl` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-extensions-api-impl-javadoc` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-lib` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-restapi` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-setup` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-setup-base` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-setup-plugin-ovirt-engine` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-setup-plugin-ovirt-engine-common` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-setup-plugin-vmconsole-proxy-helper` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-setup-plugin-websocket-proxy` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-tools` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-tools-backup` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-userportal` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-vmconsole-proxy-helper` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-webadmin-portal` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `ovirt-engine-websocket-proxy` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | | `rhevm` | Red Hat:rhev_manager:4 | All versions | 0:4.1.9.1-0.1.el7 | Products: Redhat Ovirt-Engine. ## How do I fix CVE-2018-1062? Upgrade to a fixed version. ## Is CVE-2018-1062 being exploited? There is no known exploitation of CVE-2018-1062 in the wild and no public exploit code. ## Other vulnerabilities in oVirt - [CVE-2017-7510](https://insights.sbomify.com/CVE-2017-7510/): Information disclosure in RHV (high 8.8) - [CVE-2014-0151](https://insights.sbomify.com/CVE-2014-0151/): Cross-site request forgery in n/a (medium 6.8) - [CVE-2015-1780](https://insights.sbomify.com/CVE-2015-1780/): Missing authorization in oVirt (medium 6.5) - [CVE-2016-3077](https://insights.sbomify.com/CVE-2016-3077/): Denial of service in n/a (medium 6.5) - [CVE-2016-3113](https://insights.sbomify.com/CVE-2016-3113/): Cross-site scripting in n/a (medium 6.1) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2018-1062 and fix it if it is affected. What it is: CVE-2018-1062 is a medium-severity vulnerability in oVirt, published on 6 Mar 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-2018-1062 in the wild and no public exploit code. Affected product: oVirt. 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-2018-1062/ (Markdown: https://insights.sbomify.com/CVE-2018-1062/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2018-1062 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-1062 - OSV: https://osv.dev/vulnerability/CVE-2018-1062 --- From sbomify Insights: https://insights.sbomify.com/CVE-2018-1062/ Summaries are generated and may contain mistakes; the official description above is the record.