#VU73954 Deserialization of Untrusted Data in xstream - CVE-2021-39151

Vulnerability identifier: #VU73954

Vulnerability risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-39151

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
xstream
Universal components / Libraries / Libraries used by multiple products

Vendor: XStream

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

xstream: 1.4 - 1.4.17

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External links
https://github.com/x-stream/xstream/security/advisories/GHSA-hph2-m3g5-xxv4
https://x-stream.github.io/CVE-2021-39151.html
https://security.netapp.com/advisory/ntap-20210923-0003/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.