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CVE-2022-31014

LOWCVSS 3.5/10EPSS 2.40%

Last modified

CVE-2022-31014 is a low-severity vulnerability rated 3.5/10 on the CVSS scale. Nextcloud server is an open source personal cloud server. Affected versions were found to be vulnerable to SMTP command injection. EPSS estimates a 2.40% chance of exploitation in the next 30 days.

Description

Nextcloud server is an open source personal cloud server. Affected versions were found to be vulnerable to SMTP command injection. The impact varies based on which commands are supported by the backend SMTP server. However, the main risk here is that the attacker can then hijack an already-authenticated SMTP session and run arbitrary SMTP commands as the email user, such as sending emails to other users, changing the FROM user, and so on. As before, this depends on the configuration of the server itself, but newlines should be sanitized to mitigate such arbitrary SMTP command injection. It is recommended that the Nextcloud Server is upgraded to 22.2.8 , 23.0.5 or 24.0.1. There are no known workarounds for this issue.

Metrics

CVSS 3.1
3.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

EPSS Probability
2.40%

81.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
NextcloudNextcloud Server< 19.0.13.7
NextcloudNextcloud Server< 22.2.8
NextcloudNextcloud Server>= 20.0.0, < 20.0.14.6
NextcloudNextcloud Server>= 21.0.0, < 21.0.9.5
NextcloudNextcloud Server>= 23.0.0, < 23.0.5
NextcloudNextcloud Server24.0.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-31014?
Nextcloud server is an open source personal cloud server. Affected versions were found to be vulnerable to SMTP command injection. The impact varies based on which commands are supported by the backend SMTP server. However, the main risk here is that the attacker can then hijack an already-authenticated SMTP session and run arbitrary SMTP commands as the email user, such as sending emails to other users, changing the FROM user, and so on. As before, this depends on the configuration of the server itself, but newlines should be sanitized to mitigate such arbitrary SMTP command injection. It is recommended that the Nextcloud Server is upgraded to 22.2.8 , 23.0.5 or 24.0.1. There are no known workarounds for this issue.
How severe is CVE-2022-31014?
CVE-2022-31014 has a CVSS score of 3.5/10 (LOW severity). The EPSS model estimates a 2.40% probability of exploitation in the next 30 days.
How do I fix CVE-2022-31014?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-31014?

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Source: NVD / NIST