CVE-2019-8849 SwiftNIO SSL arbitrary code execution vulnerability
Critical 9.8
Published
Updated
Check this codebase for CVE-2019-8849 and fix it if it is affected.
What it is: CVE-2019-8849 is a critical vulnerability in Apple Swift-Ubuntu, published on 18 Dec 2019.
Exploitation: There is no known exploitation of CVE-2019-8849 in the wild and no public exploit code.
Affected packages and fixed versions:
- github.com/apple/swift-nio-ssl (SwiftURL): affected from 2.0.0; fixed in 2.4.1
- github.com/apple/swift-nio-ssl (SwiftURL): affected from 2.0.0; fixed in 2.4.1
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-2019-8849/ (Markdown: https://insights.sbomify.com/CVE-2019-8849/index.md)
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2019-8849?
CVE-2019-8849 is a critical vulnerability in Apple Swift-Ubuntu, published on 18 Dec 2019.
Official description
The issue was addressed by signaling that an executable stack is not required. This issue is fixed in SwiftNIO SSL 2.4.1. A SwiftNIO application using TLS may be able to execute arbitrary code.
Which versions are affected by CVE-2019-8849?
2 open source packages ship an affected version, including github.com/apple/swift-nio-ssl. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/apple/swift-nio-ssl SwiftURL | From 2.0.0 | 2.4.1 |
github.com/apple/swift-nio-ssl SwiftURL | From 2.0.0 | 2.4.1 |
Products include Apple Swiftnio Ssl.
How do I fix CVE-2019-8849?
Upgrade github.com/apple/swift-nio-ssl to 2.4.1 or later.
Is CVE-2019-8849 being exploited?
There is no known exploitation of CVE-2019-8849 in the wild and no public exploit code.
Other vulnerabilities in Apple Swift-Ubuntu
Sources
Also known as GHSA-frg3-gpcx-968f.