High severity · published Dec 8, 2016
CVE-2016-9920
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…
7.5
CVSS
5.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.6% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
Webmail · Roundcube
through 1.1.6; 1.2.0; 1.2.1; 1.2.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-9920
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-9920
Mailing List
http://www.openwall.com/lists/oss-security/2016/12/08/10
www.securityfocus.com
http://www.securityfocus.com/bid/94858
Exploit
https://blog.ripstech.com/2016/roundcube-command-execution-via-email/
Release Notes
https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-released
security.gentoo.org
https://security.gentoo.org/glsa/201612-44
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