RoundCube Webmail up to 1.1.6/1.2.2 Sendmail steps/mail/sendmail.inc From access control

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in RoundCube Webmail up to 1.1.6/1.2.2. It has been classified as critical. This vulnerability affects unknown code of the file steps/mail/sendmail.inc of the component Sendmail. Performing a manipulation of the argument From results in access control. This vulnerability is reported as CVE-2016-9920. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276345 (Fedora Security Update for roundcubemail (FEDORA-2016-60753c3dcd)).

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 databases at Tenable (96124) and SecurityFocus (BID 94858†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB 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: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Webmail 1.1.7/1.2.3

Timelineinfo

08/12/2016 🔍
12/06/2016 +116 days 🔍
12/08/2016 +2 days 🔍
12/08/2016 +0 days 🔍
12/08/2016 +0 days 🔍
12/09/2016 +1 days 🔍
12/24/2016 +15 days 🔍
12/27/2016 +3 days 🔍
09/15/2024 +2819 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9920 (🔍)
GCVE (CVE): GCVE-0-2016-9920
GCVE (VulDB): GCVE-100-93987
SecurityFocus: 94858 - Roundcube CVE-2016-9920 Remote Code Execution Vulnerability

Entryinfo

Created: 12/09/2016 07:49
Updated: 09/15/2024 08:21
Changes: 12/09/2016 07:49 (75), 08/24/2019 12:33 (6), 09/15/2024 08:21 (18)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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