CVE-2021-21349
A Server-Side Forgery Request can be activated unmarshalling with XStream to access data streams from an arbitrary URL referencing a resource in an intranet or the local host
- State
- Published
- Severity
- 6.1 Medium
- Published
- Mar 22, 2021
- Updated
- Oct 7, 2026
- Reserved
- Dec 22, 2020
Description
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to request data from internal resources that are not publicly available 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 1.4.16.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.1 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
xstreamx-stream |
|
References
- https://x-stream.github.io/security.html#workaround
- http://x-stream.github.io/changes.html#1.4.16
- https://github.com/x-stream/xstream/security/advisories/GHSA-f6hm-88x3-mfjv
- https://x-stream.github.io/CVE-2021-21349.html
- [debian-lts-announce] 20210403 [SECURITY] [DLA 2616-1] libxstream-java security updatemailing-list
- [jmeter-dev] 20210406 [GitHub] [jmeter] sseide opened a new pull request #655: update x-stream to 1.4.16 (from 1.4.15)mailing-list
- [activemq-users] 20210427 Release date for ActiveMQ v5.16.2 to fix CVEsmailing-list
- https://security.netapp.com/advisory/ntap-20210430-0002/
- https://www.oracle.com//security-alerts/cpujul2021.html
- FEDORA-2021-fbad11014avendor-advisory
- FEDORA-2021-d894ca87dcvendor-advisory
- https://www.oracle.com/security-alerts/cpuoct2021.html
- FEDORA-2021-5e376c0ed9vendor-advisory
- DSA-5004vendor-advisory
- https://www.oracle.com/security-alerts/cpujan2022.html
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