RoundCube up to 1.3.7 steps/mail/func.inc HTML Attachment cross site scripting

Summaryinfo

A vulnerability classified as problematic has been found in RoundCube up to 1.3.7. The affected element is an unknown function of the file steps/mail/func.inc. The manipulation as part of HTML Attachment leads to cross site scripting. This vulnerability is documented as CVE-2018-19206. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in RoundCube up to 1.3.7 (Mail Client Software) and classified as problematic. This issue affects some unknown processing of the file steps/mail/func.inc. The manipulation as part of a HTML Attachment leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

steps/mail/func.inc in Roundcube before 1.3.8 has XSS via crafted use of <svg><style>, as demonstrated by an onload attribute in a BODY element, within an HTML attachment.

The bug was discovered 07/27/2018. The weakness was released 11/12/2018 (Website). It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2018-19206 since 11/12/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 108 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 119125 (Debian DSA-4344-1 : roundcube - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176534 (Debian Security Update for roundcube (DSA 4344-1)).

Upgrading to version 1.3.8 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (119125). Entry connected to this vulnerability is available at VDB-126670. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Mail Client Software

Name

• RoundCube

Version

• 1.3.0
• 1.3.1
• 1.3.2
• 1.3.3
• 1.3.4
• 1.3.5
• 1.3.6
• 1.3.7

License

• free

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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