CVE-2017-7692
Summary
| CVE | CVE-2017-7692 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-04-20 14:59:00 UTC |
| Updated | 2025-04-20 01:37:25 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.0 8.8 HIGH from [email protected]
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Problem Types: CWE-20 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 8.8 | HIGH | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 9 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
SingleConfidentiality
CompleteIntegrity
CompleteAvailability
CompleteAV:N/AC:L/Au:S/C:C/I:C/A:C
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Squirrelmail | Squirrelmail | 1.4.22 | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| SquirrelMail-Exploit-Remote-Code-Exec-CVE-2017-7692-Vuln | af854a3a-2127-422b-91ae-364da2661108 | legalhackers.com | Exploit, Third Party Advisory |
| Squirrelmail CVE-2017-7692 Command Injection Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| SquirrelMail Input Validation Flaw in 'Deliver_SendMail.class.php' Lets Remote Authenticated Users Execute Arbitrary Commands on the Target System - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | |
| oss-security - CVE-2017-7692: Squirrelmail 1.4.22 Remote Code Execution | af854a3a-2127-422b-91ae-364da2661108 | openwall.com | Mailing List, Third Party Advisory |
| SquirrelMail < 1.4.22 - Remote Code Execution | af854a3a-2127-422b-91ae-364da2661108 | www.exploit-db.com | |
| oss-security - Re: SquirrelMail <= 1.4.23 Remote Code Execution (CVE-2017-7692) | af854a3a-2127-422b-91ae-364da2661108 | openwall.com | |
| SquirrelMail: Remote Code Execution (GLSA 201709-13) — Gentoo security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| Debian -- Security Information -- DSA-3852-1 squirrelmail | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.