# CVE-2020-1700: Denial of service in ceph

> An authenticated attacker can cause a denial of service in Ceph RGW by triggering socket leaks through repeated disconnects, exhausting system resources.

- **Severity:** Medium 6.5 (`CVSS:3.1/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:** 7 Feb 2020
- **Updated:** 4 Aug 2024
- **Also known as:** DEBIAN-CVE-2020-1700, GHSA-g4r6-j635-4pr7, UBUNTU-CVE-2020-1700, USN-4304-1

## What is CVE-2020-1700?

CVE-2020-1700 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 7 Feb 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A flaw was found in the way the Ceph RGW Beast front-end handles unexpected disconnects. An authenticated attacker can abuse this flaw by making multiple disconnect attempts resulting in a permanent leak of a socket connection by radosgw. This flaw could lead to a denial of service condition by pile up of CLOSE_WAIT sockets, eventually leading to the exhaustion of available resources, preventing legitimate users from connecting to the system.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2020-1700?

It affects 4 products.


Products: Canonical Ubuntu Linux, Ceph Ceph, Opensuse Leap, Redhat Openshift Container Storage.

## How do I fix CVE-2020-1700?

Apply the vendor's patch.

## Is CVE-2020-1700 being exploited?

There is no known exploitation of CVE-2020-1700 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-2020-1700 and fix it if it is affected.

What it is: CVE-2020-1700 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 7 Feb 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-1700 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-2020-1700/ (Markdown: https://insights.sbomify.com/CVE-2020-1700/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-1700
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-1700
- OSV: https://osv.dev/vulnerability/CVE-2020-1700

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-1700/
Summaries are generated and may contain mistakes; the official description above is the record.