VDB-59257 · CVE-2011-4211 · tp://co

Google App Engine Python SDK up to 1.0.1 Access Restriction code access control

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 Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.3	$0-$5k	0.00

A vulnerability classified as critical was found in Google App Engine Python SDK up to 1.0.1 (Programming Language Software). Affected by this vulnerability is some unknown functionality of the component Access Restriction. The manipulation of the argument code with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The FakeFile implementation in the sandbox environment in the Google App Engine Python SDK before 1.5.4 does not properly control the opening of files, which allows local users to bypass intended access restrictions and create arbitrary files via ALLOWED_MODES and ALLOWED_DIRS changes within the code parameter to _ah/admin/interactive/execute, a different vulnerability than CVE-2011-1364.

The weakness was disclosed 10/30/2011 as tp://co (Website). The advisory is shared at code.google.com. This vulnerability is known as CVE-2011-4211 since 10/30/2011. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 1.0.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (71064). The entries 3516, 47987, 47513 and 50835 are pretty similar.

Productinfo

Type

Programming Language Software

Vendor

Google

Name

App Engine Python SDK

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 7.3

VulDB Base Score: 8.4
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: App Engine Python SDK 1.0.2

Timelineinfo

10/30/2011 🔍
10/30/2011 +0 days 🔍
10/30/2011 +0 days 🔍
11/01/2011 +2 days 🔍
03/23/2015 +1238 days 🔍
01/22/2018 +1036 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: tp://co
Status: Confirmed

CVE: CVE-2011-4211 (🔍)
X-Force: 71064 - Google App Engine Python SDK FakeFile privilege escalation
SecurityFocus: 50464 - Google App Engine Python SDK 'FakeFile' Object Local Security Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 01/22/2018 08:11
Changes: 03/23/2015 16:50 (53), 01/22/2018 08:11 (6)
Complete: 🔍