CVE-2016-9920

moderate-risk
Published 2016-12-08

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.

Do I need to act?

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38.3% chance of exploitation in next 30 days
EPSS score — higher than 62% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / HIGH complexity

Affected Products (4)

Affected Vendors

Roundcube

References (10)

Mailing List http://www.openwall.com/lists/oss-security/2016/12/08/10
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
https://security.gentoo.org/glsa/201612-44
Mailing List http://www.openwall.com/lists/oss-security/2016/12/08/10
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
https://security.gentoo.org/glsa/201612-44
49
/ 100
moderate-risk
Severity 22/34 · High
Exploitability 17/34 · Moderate
Exposure 10/34 · Low