Arbitrary file upload in X-stream Xstream
CVE-2021-21344
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 load and execute arbitrary code from a remote host only by manipulating t…
Vulnerability class: Unrestricted File Upload
EPSS: 0.765 (99.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N.
Affected products
- X-stream Xstream — versions < 1.4.16
Weakness classification (CWE)
Public proof-of-concept exploits
References
- x-stream.github.io/security.html (x_refsource_MISC)
- x-stream.github.io/changes.html (x_refsource_MISC)
- github.com/x-stream/xstream/security/advisories/GHSA-59jw-jqf4-3wq3 (x_refsource_CONFIRM)
- x-stream.github.io/CVE-2021-21344.html (x_refsource_MISC)
- [debian-lts-announce] 20210403 [SECURITY] [DLA 2616-1] libxstream-java security update (mailing-list, x_refsource_MLIST)
- [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, x_refsource_MLIST)
- [activemq-users] 20210427 Release date for ActiveMQ v5.16.2 to fix CVEs (mailing-list, x_refsource_MLIST)
- security.netapp.com/advisory/ntap-20210430-0002/ (x_refsource_CONFIRM)
- www.oracle.com//security-alerts/cpujul2021.html (x_refsource_MISC)
- FEDORA-2021-fbad11014a (vendor-advisory, x_refsource_FEDORA)
Frequently asked questions
- What is CVE-2021-21344?
- CVE-2021-21344 is a medium-severity vulnerability in X-stream Xstream, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 5.3/10. Published 2021-03-22.
- How severe is CVE-2021-21344?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-21344 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.