RCE in X-stream Xstream
CVE-2021-39144
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stre…
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.943 (99.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- X-stream Xstream — versions < 1.4.18
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- github.com/x-stream/xstream/security/advisories/GHSA-j9h8-phrw-h4fh
- x-stream.github.io/CVE-2021-39144.html
- [debian-lts-announce] 20210929 [SECURITY] [DLA 2769-1] libxstream-java security update (mailing-list)
- FEDORA-2021-fbad11014a (vendor-advisory)
- FEDORA-2021-d894ca87dc (vendor-advisory)
- FEDORA-2021-5e376c0ed9 (vendor-advisory)
- DSA-5004 (vendor-advisory)
- www.oracle.com/security-alerts/cpujan2022.html
- security.netapp.com/advisory/ntap-20210923-0003/
- www.oracle.com/security-alerts/cpuapr2022.html
Frequently asked questions
- What is CVE-2021-39144?
- CVE-2021-39144 is a high-severity vulnerability in X-stream Xstream, classified under Code Injection. CVSS score: 8.5/10. Published 2021-08-23.
- How severe is CVE-2021-39144?
- High severity. CVSS v3 base score is 8.5 out of 10.
- Is CVE-2021-39144 known to be exploited?
- Yes. CVE-2021-39144 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-03-10), indicating it is being actively exploited. 15 public proof-of-concept repositories are indexed.