Improper input validation in Nextcloud Server - CVE-2018-3761

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Main Vulnerability Database Vulnerabilities #VU14214

Improper input validation in Nextcloud Server - CVE-2018-3761

Published: August 6, 2018 / Updated: August 7, 2018


Vulnerability identifier: #VU14214
CSH Severity: Low
CVSS v4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-3761
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The vulnerability exists due to insufficient input validation. A remote attacker with access to the OAuth2 refresh token can trick the victim into opening a specially crafted data and obtain new tokens.


Affected software

Nextcloud Server
Opensuse

How to mitigate CVE-2018-3761

Update to version 12.0.8 or 13.0.3.

Nextcloud Server - addressed in versions 12.0.8, 13.0.3

External References

Related Security Bulletins