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CVE-2023-23943

Blind SSRF via server URL input in the Nextcloud Mail app

Published: Feb 6, 2023Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-918
5.0MEDIUM
NVD MITRE
EPSS Score
0.9%
Top 43.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

Nextcloud mail is an email app for the nextcloud home server platform. In affected versions the SMTP, IMAP and Sieve host fields allowed to scan for internal services and servers reachable from within the local network of the Nextcloud Server. It is recommended that the Nextcloud Maill app is upgraded to 1.15.0 or 2.2.2. The only known workaround for this issue is to completely disable the nextcloud mail app.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-918

Affected Products

nextcloud
oss-project·DEaka nextcloud server
mailSaaSSaaS Service
Cloud & SaaS / saas-application
security-advisoriesSaaSSaaS Service
Cloud & SaaS / saas-application
Nextcloud GmbH
commercial·DEaka nextcloud server, nextcloud calendar, nextcloud enterprise server
Nextcloud mailSaaSSaaS Service
Cloud & SaaS / saas-application

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Command and Control
Initial Access
View detailed technique mapping

References

https://github.com/nextcloud/mail/pull/7796
github.com
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8gcx-r739-9pf6
github.com
https://hackerone.com/reports/1736390
hackerone.com
and 3 more references View all →

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