What is CVE-2021-29505?

CVE-2021-29505 is a high-severity vulnerability in X-stream Xstream, classified under Code Injection. CVSS score: 7.5/10. Published 2021-05-28.

How severe is CVE-2021-29505?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2021-29505 known to be exploited?

28 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in X-stream Xstream

CVE-2021-29505

XStream is software for serializing Java objects to XML and back again. A vulnerability in XStream versions prior to 1.4.17 may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processe…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.903 (99.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

X-stream Xstream — versions < 1.4.17

Weakness classification (CWE)

Public proof-of-concept exploits

References

https://github.com/x-stream/xstream/security/advisories/GHSA-7chv-rrw6-w6fc (x_refsource_CONFIRM)
https://github.com/x-stream/xstream/commit/24fac82191292c6ae25f94508d28b9823f83624f (x_refsource_MISC)
https://github.com/x-stream/xstream/commit/f0c4a8d861b68ffc3119cfbbbd632deee624e227 (x_refsource_MISC)
https://lists.apache.org/thread.html/r8ee51debf7fd184b6a6b020dc31df25118b0aa612885f12fbe77f04f@%3Cdev.jmeter.apache.org%3E (x_refsource_MISC)
https://lists.debian.org/debian-lts-announce/2021/07/msg00004.html (x_refsource_MISC)
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP (x_refsource_MISC)
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7 (x_refsource_MISC)
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB (x_refsource_MISC)
https://security.netapp.com/advisory/ntap-20210708-0007 (x_refsource_MISC)
https://www.debian.org/security/2021/dsa-5004 (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-29505?: CVE-2021-29505 is a high-severity vulnerability in X-stream Xstream, classified under Code Injection. CVSS score: 7.5/10. Published 2021-05-28.
How severe is CVE-2021-29505?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-29505 known to be exploited?: 28 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.