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CVE-2016-9920

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Date: December 8, 2016

steps/mail/sendmail.inc in Roundcube before 1.1.7 and 1.2.x before 1.2.3, when no SMTP server is configured and the sendmail program is enabled, does not properly restrict the use of custom envelope-from addresses on the sendmail command line, which allows remote authenticated users to execute arbitrary code via a modified HTTP request that sends a crafted e-mail message.

Language: PHP

Severity Score

Related Resources (9)

https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-released
https://security-tracker.debian.org/tracker/CVE-2016-9920
https://nvd.nist.gov/vuln/detail/CVE-2016-9920
http://www.securityfocus.com/bid/94858
https://blog.ripstech.com/2016/roundcube-command-execution-via-email/
http://www.openwall.com/lists/oss-security/2016/12/08/10
https://security.gentoo.org/glsa/201612-44
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-9920
https://www.mend.io/vulnerability-database/CVE-2016-9920

Severity Score

Weakness Type (CWE)

Improper Access Control

CWE-284

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): SINGLE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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