CVE-2020-27223 PoC — Eclipse Jetty 资源管理错误漏洞

Source

https://github.com/motikan2010/CVE-2020-27223

Associated Vulnerability

Title:Eclipse Jetty 资源管理错误漏洞 (CVE-2020-27223)
Description:In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.

Description

CVE-2020-27223 Vulnerability App & PoC

Readme

# CVE-2020-27223

## Using

```
$ mvn spring-boot:run
```

### 9.4.36.v20210114

```
$ ./poc/cve-2020-27223-poc1.sh
{"time_ns":"58,557","accept_language":"aab"}
real	0m0.093s 🐇
user	0m0.006s
sys	0m0.007s
{"time_ns":"18,461,763,438","accept_language":"ahn"}
real	0m35.339s 🐢
user	0m0.006s
sys	0m0.006s
```

### 9.4.37.v20210219 (Fixed)

```
$ ./poc/cve-2020-27223-poc1.sh
{"time_ns":"36,675","accept_language":"aab"}
real	0m0.023s 🐇
user	0m0.005s
sys	0m0.007s
{"time_ns":"1,265,004","accept_language":"ahn"}
real	0m0.024s 🐇
user	0m0.006s
sys	0m0.006s
```

## PoC

```
$ ./poc/cve-2020-27223-poc2.sh
curl: (28) Operation timed out after 120000 milliseconds with 0 bytes received

real	2m0.025s
user	0m0.016s
sys	0m0.009s
```

## References

- [DOS vulnerability for Quoted Quality CSV headers · Advisory · eclipse/jetty.project](https://github.com/eclipse/jetty.project/security/advisories/GHSA-m394-8rww-3jr7)
- [Merge pull request from GHSA-m394-8rww-3jr7 · eclipse/jetty.project@10e5317](https://github.com/eclipse/jetty.project/commit/10e531756b972162eed402c44d0244f7f6b85131)

File Snapshot

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