Improper Access Control Affecting roundcube package, versions <1.2.3+dfsg.1-1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN13-ROUNDCUBE-5694977
- published8 Dec 2016
- disclosed8 Dec 2016
Introduced: 8 Dec 2016
CVE-2016-9920 (opens in a new tab)How to fix?
Upgrade Debian:13 roundcube to version 1.2.3+dfsg.1-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream roundcube package and not the roundcube package as distributed by Debian.
See How to fix? for Debian:13 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2016-9920
- https://security.gentoo.org/glsa/201612-44
- https://blog.ripstech.com/2016/roundcube-command-execution-via-email/
- https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-released
- http://www.openwall.com/lists/oss-security/2016/12/08/10
- http://www.securityfocus.com/bid/94858
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-9920
- https://github.com/t0kx/exploit-CVE-2016-9920