# CVE-2016-8626: Denial of service in Ceph > An authenticated attacker can cause a denial of service in Ceph Object Gateway by sending specially crafted POST object requests. - **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:** 31 Jul 2018 - **Updated:** 6 Aug 2024 - **Also known as:** DEBIAN-CVE-2016-8626, GHSA-784r-h477-mqpc, RHSA-2016:2815, RHSA-2016:2847, SUSE-SU-2017:0758-1, UBUNTU-CVE-2016-8626 ## What is CVE-2016-8626? CVE-2016-8626 is a medium-severity denial of service vulnerability in Redhat Enterprise Linux Desktop, published on 31 Jul 2018. Any signed-in user can exploit it over the network, with no action from the victim. ### Official description A flaw was found in Red Hat Ceph before 0.94.9-8. The way Ceph Object Gateway handles POST object requests permits an authenticated attacker to launch a denial of service attack by sending null or specially crafted POST object requests. Weakness: CWE-20 (Improper Input Validation), CWE-476 (NULL Pointer Dereference) ## Which versions are affected by CVE-2016-8626? It affects 4 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `ceph` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `ceph-common` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `ceph-debuginfo` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `ceph-mon` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `ceph-osd` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `ceph-radosgw` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `ceph-selinux` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `ceph-test` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `librados2` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `librados2-devel` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `librbd1` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `librbd1-devel` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `python-rados` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `python-rbd` | Red Hat:ceph_storage:1.3::el7 | All versions | 1:0.94.9-8.el7cp | | `calamari-server` | Red Hat:ceph_storage:2::el7 | All versions | 0:1.4.9-1.el7cp | | `ceph` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `ceph-base` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `ceph-common` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `ceph-debuginfo` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `ceph-deploy` | Red Hat:ceph_storage:2::el7 | All versions | 0:1.5.36-20.el7cp | | `ceph-fuse` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `ceph-iscsi-config` | Red Hat:ceph_storage:2::el7 | All versions | 0:1.5-1.el7cp | | `ceph-iscsi-tools` | Red Hat:ceph_storage:2::el7 | All versions | 0:1.1-1.el7cp | | `ceph-mds` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `ceph-mon` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `ceph-osd` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `ceph-radosgw` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `ceph-selinux` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `ceph-test` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `libcephfs1` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `libcephfs1-devel` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `libntirpc` | Red Hat:ceph_storage:2::el7 | All versions | 0:1.4.1-1.el7 | | `libntirpc-debuginfo` | Red Hat:ceph_storage:2::el7 | All versions | 0:1.4.1-1.el7 | | `librados2` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `librados2-devel` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `librbd1` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `librbd1-devel` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `librgw2` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `librgw2-devel` | Red Hat:ceph_storage:2::el7 | All versions | 1:10.2.3-13.el7cp | | `nfs-ganesha` | Red Hat:ceph_storage:2::el7 | All versions | 0:2.4.0-3.el7cp | Products: Redhat Ceph, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Workstation. ## How do I fix CVE-2016-8626? Upgrade to a fixed version. ## Is CVE-2016-8626 being exploited? There is no known exploitation of CVE-2016-8626 in the wild and no public exploit code. ## Other vulnerabilities in Redhat Enterprise Linux Desktop - [CVE-2022-3650](https://insights.sbomify.com/CVE-2022-3650/): Privilege escalation in Ceph (high 7.8) - [CVE-2024-47866](https://insights.sbomify.com/CVE-2024-47866/): RGW DoS attack with empty HTTP header in S3 object copy (high 7.5) - [CVE-2016-5009](https://insights.sbomify.com/CVE-2016-5009/): Denial of service in n/a (medium 6.5) - [CVE-2018-16889](https://insights.sbomify.com/CVE-2018-16889/): Information disclosure in ceph (medium 5.5) - [CVE-2020-27839](https://insights.sbomify.com/CVE-2020-27839/): Information disclosure in ceph-dashboard (medium 5.4) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2016-8626 and fix it if it is affected. What it is: CVE-2016-8626 is a medium-severity denial of service vulnerability in Redhat Enterprise Linux Desktop, published on 31 Jul 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-2016-8626 in the wild and no public exploit code. Affected product: Redhat Enterprise Linux Desktop. 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-2016-8626/ (Markdown: https://insights.sbomify.com/CVE-2016-8626/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2016-8626 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-8626 - OSV: https://osv.dev/vulnerability/CVE-2016-8626 --- From sbomify Insights: https://insights.sbomify.com/CVE-2016-8626/ Summaries are generated and may contain mistakes; the official description above is the record.