CVE-2021-39144

unknown KEV

Published 2021-08-25 · Modified 2023-03-10

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CVSS v3

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CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H

CVSS v4 NEW

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not yet in upstream

VIR risk

2.5

Description

XStream contains a remote code execution vulnerability that allows an attacker to manipulate the processed input stream and replace or inject objects that result in the execution of a local command on the server. This vulnerability can affect multiple products, including but not limited to VMware Cloud Foundation.

CISA KEV

Vendor: XStream
Product: XStream
Due date: 2023-03-31

Predictions

Exploit likelihood

99%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Metasploit modules

exploit_linux/http/vmware_nsxmgr_xstream_rce_cve_2021_39144 rank 600

VMware NSX Manager XStream unauthenticated RCE

Source fetch failed: fetch_error — view the original via the link above.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`1.4.18-1`
sid	Fixed	`1.4.18-1`
forky	Fixed	`1.4.18-1`
bullseye	Fixed	`1.4.15-3+deb11u1`
bookworm	Fixed	`1.4.18-1`

Package impact

Ecosystem	Package	Vulnerable	Fixed
Maven	com.thoughtworks.xstream:xstream	`<1.4.18`	`1.4.18`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.