CVE-2021-34343

Buffer Overflow Vulnerability in QTS, QuTS hero, and QuTScloud

Description

A stack buffer overflow vulnerability has been reported to affect QNAP device running QTS, QuTScloud, QuTS hero. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of QTS, QuTScloud, QuTS hero: QTS 4.5.4.1715 build 20210630 and later QTS 5.0.0.1716 build 20210701 and later QuTScloud c4.5.6.1755 and later QuTS hero h4.5.4.1771 build 20210825 and later

Remediation

Solution:

  • We have already fixed this vulnerability in the following versions of QTS, QuTScloud, QuTS hero: QTS 4.5.4.1715 build 20210630 and later QTS 5.0.0.1716 build 20210701 and later QuTScloud c4.5.6.1755 and later QuTS hero h4.5.4.1771 build 20210825 and later

Category

6.0
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.67% Top 30%
Vendor Advisory qnap.com
Affected: QNAP Systems Inc. QTS
Affected: QNAP Systems Inc. QuTScloud
Affected: QNAP Systems Inc. QuTS hero
Published at:
Updated at:

References

Link Tags
https://www.qnap.com/en/security-advisory/qsa-21-33 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-34343?
CVE-2021-34343 has been scored as a medium severity vulnerability.
How to fix CVE-2021-34343?
To fix CVE-2021-34343: We have already fixed this vulnerability in the following versions of QTS, QuTScloud, QuTS hero: QTS 4.5.4.1715 build 20210630 and later QTS 5.0.0.1716 build 20210701 and later QuTScloud c4.5.6.1755 and later QuTS hero h4.5.4.1771 build 20210825 and later
Is CVE-2021-34343 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-34343 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-34343?
CVE-2021-34343 affects QNAP Systems Inc. QTS, QNAP Systems Inc. QuTScloud, QNAP Systems Inc. QuTS hero.
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