SPIP 3.1 Internal Forum Persistent cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k0.00

A vulnerability classified as problematic was found in SPIP 3.1 (Content Management System). Affected by this vulnerability is an unknown part of the component Internal Forum. The manipulation with an unknown input leads to a cross site scripting vulnerability (Persistent). The CWE definition for the vulnerability is CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. As an impact it is known to affect integrity.

The weakness was released 11/17/2016 by Tim Coen with Curesec Research Team as SPIP 3.1: XSS & Host Header Injection as confirmed mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. The public release was coordinated with the project team. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK. The advisory points out:

When posting a message in the internal Forum, user input is properly encoded, thus disallowing XSS. However, a hypertext link may be added as well, and there is no check on the protocol of the supplied link, which leads to an XSS vulnerability.

A public exploit has been developed by Tim Coen and been published immediately after the advisory. It is possible to download the exploit at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 137 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 3.1.2 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

Entries connected to this vulnerability are available at 93692, 93693 and 93694.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Name: Persistent
Class: Cross site scripting / Persistent
CWE: CWE-80 / CWE-74 / CWE-707
ATT&CK: T1059.007

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Tim Coen
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: SPIP 3.1.2

Timelineinfo

05/09/2016 🔍
09/23/2016 +137 days 🔍
11/17/2016 +55 days 🔍
11/17/2016 +0 days 🔍
11/19/2016 +2 days 🔍
07/24/2019 +977 days 🔍

Sourcesinfo

Advisory: SPIP 3.1: XSS & Host Header Injection
Researcher: Tim Coen
Organization: Curesec Research Team
Status: Confirmed
Coordinated: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 11/19/2016 17:59
Updated: 07/24/2019 22:06
Changes: 11/19/2016 17:59 (54), 07/24/2019 22:06 (2)
Complete: 🔍

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