VDB-8476 · CVE-2012-6140 · OSVDB 92581

Google Authenticator 0.86/0.87/0.91 Access Restriction pam_google_authenticator.c information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Google Authenticator 0.86/0.87/0.91. It has been declared as problematic. The affected element is an unknown function in the library libpam of the file pam_google_authenticator.c of the component Access Restriction. Executing a manipulation can lead to information disclosure. This vulnerability is handled as CVE-2012-6140. Additionally, an exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Google Authenticator 0.86/0.87/0.91. It has been declared as problematic. This vulnerability affects some unknown processing in the library libpam of the file pam_google_authenticator.c of the component Access Restriction. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

pam_google_authenticator.c in the PAM module in Google Authenticator before 1.0 requires user-readable permissions for the secret file, which allows local users to bypass intended access restrictions and discover a shared secret via standard filesystem operations, a different vulnerability than CVE-2013-0258.

The weakness was released 09/22/2012 by Fabio Liambotis as not defined mailinglist post (oss-sec). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2012-6140 since 12/06/2012. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1592.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k.

Applying the patch c3414e9857ad64e52283f3266065ef3023fc69a8 is able to eliminate this problem. The bugfix is ready for download at code.google.com.

The vulnerability is also documented in the vulnerability database at OSVDB (92581†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.6

VulDB Base Score: 4.0
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Patch: c3414e9857ad64e52283f3266065ef3023fc69a8

Timelineinfo

09/22/2012 🔍
09/22/2012 +0 days 🔍
12/06/2012 +75 days 🔍
04/23/2013 +138 days 🔍
04/24/2013 +1 days 🔍
05/05/2018 +1837 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: openwall.com
Researcher: Fabio Liambotis
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-6140 (🔍)
GCVE (CVE): GCVE-0-2012-6140
GCVE (VulDB): GCVE-100-8476
OSVDB: 92581

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/23/2013 11:18
Updated: 05/05/2018 18:08
Changes: 04/23/2013 11:18 (53), 05/05/2018 18:08 (6)
Complete: 🔍
Committer: olku
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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