The vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types.
If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.17.
See workarounds for the different versions covering all CVEs.
See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for CVE-2021-29505.
V3geB1rd, white hat hacker from Tencent Security Response Center found and reported the issue to XStream and provided the required information to reproduce it.
If you have any questions or comments about this advisory:
* Open an issue in XStream
* Email us at XStream Google Group
| Score | Percentile |
|---|---|
| 90.77% | 99.60% |
| Base score | Version | Severity | Vector |
|---|---|---|---|
| 7.5 | 3.1 | — |
|
| Type | Value |
|---|---|
| GHSA | GHSA-7chv-rrw6-w6fc ↗ |
| CVE | CVE-2021-29505 ↗ |
Vulnerable version ranges and first patched releases as published by GitHub.
| Ecosystem | Package | Vulnerable range | First patched | Vulnerable functions |
|---|---|---|---|---|
| maven | com.thoughtworks.xstream:xstream | < 1.4.17 | 1.4.17 | — |