RoundCube Webmail up to 1.1.6/1.2.2 Sendmail steps/mail/sendmail.inc From access control
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.6 | $0-$5k | 0.00 |
A vulnerability classified as critical has been found in RoundCube Webmail up to 1.1.6/1.2.2 (Mail Client Software). This affects an unknown code block of the file steps/mail/sendmail.inc of the component Sendmail. The manipulation of the argument From
with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
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.
The bug was discovered 12/06/2016. The weakness was disclosed 12/08/2016 (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is uniquely identified as CVE-2016-9920 since 12/08/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. The requirement for exploitation is a authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.
The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 96124 (GLSA-201612-44 : Roundcube: Arbitrary code execution), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.
Upgrading to version 1.1.7 or 1.2.3 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (96124).
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.9VulDB Meta Temp Score: 6.7
VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Access controlCWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Nessus ID: 96124
Nessus Name: GLSA-201612-44 : Roundcube: Arbitrary code execution
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 840856
OpenVAS Name: Fedora Update for roundcubemail FEDORA-2016-60753c3dcd
OpenVAS File: 🔍
OpenVAS Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: Webmail 1.1.7/1.2.3
Timeline
08/12/2016 🔍12/06/2016 🔍
12/08/2016 🔍
12/08/2016 🔍
12/08/2016 🔍
12/09/2016 🔍
12/24/2016 🔍
12/27/2016 🔍
08/24/2019 🔍
Sources
Advisory: openwall.comStatus: Not defined
Confirmation: 🔍
CVE: CVE-2016-9920 (🔍)
SecurityFocus: 94858 - Roundcube CVE-2016-9920 Remote Code Execution Vulnerability
Entry
Created: 12/09/2016 07:49Updated: 08/24/2019 12:33
Changes: 12/09/2016 07:49 (75), 08/24/2019 12:33 (6)
Complete: 🔍
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