DotClear 2.9.1 RSS Feed Postscan privileges management

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

A vulnerability was found in DotClear 2.9.1 (Blog Software). It has been classified as critical. This affects an unknown part of the component RSS Feed Handler. The manipulation with an unknown input leads to a privileges management vulnerability (Postscan). CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality.

The weakness was presented 08/24/2016 by Wiswat Aswamenakul as confirmed mailinglist post (Full-Disclosure). The advisory is shared at seclists.org. The public release was coordinated in cooperation with the project team. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue. The advisory points out:

Dotclear has a feature to import blog content through RSS feed. Authenticated users could have access to this feature. The feature has no restrict to access private network, such as, 10.0.0.1/8, 172.16.0.0/12, 192.168.0.0/16. This allows authenticated users to use RSS import to scan port of internal network.

A public exploit has been developed by Wiswat Aswamenakul in URL and been published immediately after the advisory. The exploit is shared for download at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 9 days. During that time the estimated underground price was around $0-$5k. The advisory illustrates:

By putting "http://192.168.1.132:22/"; in the RSS URL input field. The response display error message saying " Status code line invalid: SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.7" where my 192.168.1.132 has SSH opened on port 22.

Upgrading to version 2.10 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

See 90932 and 90931 for similar entries.

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: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Name: Postscan
Class: Privileges management / Postscan
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Wiswat Aswamenakul
Programming Language: 🔍
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: DotClear 2.10

Timelineinfo

07/08/2016 🔍
07/09/2016 +1 days 🔍
07/17/2016 +8 days 🔍
08/24/2016 +38 days 🔍
08/24/2016 +0 days 🔍
08/25/2016 +1 days 🔍
04/02/2019 +950 days 🔍

Sourcesinfo

Advisory: seclists.org
Researcher: Wiswat Aswamenakul
Status: Confirmed
Coordinated: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 08/25/2016 09:23
Updated: 04/02/2019 21:48
Changes: 08/25/2016 09:23 (56), 04/02/2019 21:48 (2)
Complete: 🔍
Cache ID: 18:0B4:103

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