# CVE-2020-10705: Allocation of Resources Without Limits or Throttling in Undertow

> Attackers can cause a denial of service in Undertow by sending requests with the Expect: 100-continue header, leading to out-of-memory errors.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 10 Jun 2020
- **Updated:** 4 Aug 2024
- **Also known as:** DEBIAN-CVE-2020-10705, GHSA-g4cp-h53p-v3v8, UBUNTU-CVE-2020-10705

## What is CVE-2020-10705?

CVE-2020-10705 is a high-severity denial of service vulnerability in Netapp Oncommand Insight, published on 10 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A flaw was discovered in Undertow in versions before Undertow 2.1.1.Final where certain requests to the "Expect: 100-continue" header may cause an out of memory error. This flaw may potentially lead to a denial of service.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2020-10705?

2 open source packages ship an affected version, including io.undertow:undertow-core. It affects 4 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `io.undertow:undertow-core` | Maven | All versions | 2.1.1.Final |
| `io.undertow:undertow-core` | Maven | All versions | 2.1.1.Final |

Products: Netapp Oncommand Insight, Redhat Jboss Enterprise Application Platform, Redhat Openshift Application Runtimes, Redhat Undertow.

## How do I fix CVE-2020-10705?

Upgrade io.undertow:undertow-core to 2.1.1.Final or later.

## Is CVE-2020-10705 being exploited?

There is no known exploitation of CVE-2020-10705 in the wild and no public exploit code.

## Other vulnerabilities in Netapp Oncommand Insight

- [CVE-2017-5600](https://insights.sbomify.com/CVE-2017-5600/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2018-1258](https://insights.sbomify.com/CVE-2018-1258/): Spring Framework when used in combination with any versions of Spring Security contains an authorization bypass (high 8.8)
- [CVE-2020-5421](https://insights.sbomify.com/CVE-2020-5421/): RFD Protection Bypass via jsessionid (high 8.7)
- [CVE-2022-38733](https://insights.sbomify.com/CVE-2022-38733/): Auth bypass in OnCommand Insight (high 8.6)
- [CVE-2023-22102](https://insights.sbomify.com/CVE-2023-22102/): MySQL Connectors takeover vulnerability (high 8.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-10705 and fix it if it is affected.

What it is: CVE-2020-10705 is a high-severity denial of service vulnerability in Netapp Oncommand Insight, published on 10 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-10705 in the wild and no public exploit code.

Affected packages and fixed versions:
- io.undertow:undertow-core (Maven): affected all versions; fixed in 2.1.1.Final
- io.undertow:undertow-core (Maven): affected all versions; fixed in 2.1.1.Final

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-2020-10705/ (Markdown: https://insights.sbomify.com/CVE-2020-10705/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-10705
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-10705
- OSV: https://osv.dev/vulnerability/CVE-2020-10705

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-10705/
Summaries are generated and may contain mistakes; the official description above is the record.