CVE-2017-7692 Details
SquirrelMail 1.4.22 (and other versions before 20170427_0200-SVN) allows post-authentication remote code execution via a sendmail.cf file that is mishandled in a popen call. It's possible to exploit this vulnerability to execute arbitrary shell commands on the remote server. The problem is in the Deliver_SendMail.class.php with the initStream function that uses escapeshellcmd() to sanitize the sendmail command before executing it. The use of escapeshellcmd() is not correct in this case since it doesn't escape whitespaces, allowing the injection of arbitrary command parameters. The problem is in -f$envelopefrom within the sendmail command line. Hence, if the target server uses sendmail and SquirrelMail is configured to use it as a command-line program, it's possible to trick sendmail into using an attacker-provided configuration file that triggers the execution of an arbitrary command. For exploitation, the attacker must upload a sendmail.cf file as an email attachment, and inject the sendmail.cf filename with the -C option within the "Options > Personal Informations > Email Address" setting.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2017-7692
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
12.36 Probability of exploitation activity being observed over the next 30 days (94rd percentile)
CVSS score for CVE-2017-7692
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
8.8 High
Products affected by CVE-2017-7692
Squirrelmail 1.4.22
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Not available
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CVE-2017-7692 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 52 22.03%
CZ 18 7.63%
RO 13 5.51%
DE 13 5.51%
FR 12 5.08%
GB 11 4.66%
PL 10 4.24%
NL 9 3.81%
ID 7 2.97%
AU 7 2.97%

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CVE-2017-7692 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 65 55.56%
Telecommunications 38 32.48%
Education 8 6.84%
Business Services 3 2.56%
Energy/Resources 1 0.85%
Media/Entertainment 1 0.85%
Nonprofit/NGO 1 0.85%

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