Facebook API 2.1 /oauth/authorize response_type/client_id/redirect_uri

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
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5.7$0-$5k0.00

A vulnerability classified as critical was found in Facebook API 2.1 (Social Network Software). Affected by this vulnerability is some unknown processing of the file /oauth/authorize. The manipulation of the argument response_type/client_id/redirect_uri with an unknown input leads to a redirect vulnerability. The CWE definition for the vulnerability is CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 05/01/2016. The weakness was shared 10/10/2016 as VL-ID 1972 as confirmed advisory (Website). It is possible to read the advisory at vulnerability-lab.com. The vendor cooperated in the coordination of the public release. The attack can be launched remotely. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1204.001 according to MITRE ATT&CK.

After immediately, there has been an exploit disclosed. It is possible to download the exploit at vulnerability-lab.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 159 days. During that time the estimated underground price was around $25k-$100k.

Applying a patch is able to eliminate this problem. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

Productinfo

Type

Vendor

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: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Redirect
CWE: CWE-601
ATT&CK: T1204.001

Local: No
Remote: Yes

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

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Timelineinfo

05/01/2016 🔍
05/03/2016 +2 days 🔍
05/08/2016 +5 days 🔍
10/07/2016 +152 days 🔍
10/10/2016 +3 days 🔍
10/10/2016 +0 days 🔍
10/12/2016 +2 days 🔍
05/07/2019 +937 days 🔍

Sourcesinfo

Advisory: VL-ID 1972
Status: Confirmed
Coordinated: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/12/2016 09:47
Updated: 05/07/2019 16:29
Changes: 10/12/2016 09:47 (51), 05/07/2019 16:29 (2)
Complete: 🔍

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