Debian update for roundcube

1) Information disclosure

EUVDB-ID: #VU9172

Risk: Medium

CVSSv4.0: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2017-16651

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: Yes

Description

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

The weakness exists due to insufficient validation of file-based attachment plugins and _task=settings&_action=upload-display&_from=timezone requests. A remote attacker can modify the login form and submit it with valid credentials (username/password) of an email account, send a specially crafted HTTP request and gain unauthorized access to arbitrary files on the host's filesystem, including configuration files of Roundcube.

Note: the vulnerability is being actively exploited.

Mitigation

Update the affected package to version: 1.2.3+dfsg.1-4+deb9u1, 1.3.3+dfsg.1-1

Vulnerable software versions

Debian Linux: All versions

CPE2.3

• cpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*

External links

https://roundcube.net/news/2017/11/08/security-updates-1.3.3-1.2.7-and-1.1.10

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.