TYPO3 up to 4.7.3 Backend Help System view_help.php unserialize cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in TYPO3. This vulnerability affects the function unserialize of the file view_help.php of the component Backend Help System. The manipulation leads to cryptographic issue. This vulnerability is uniquely identified as CVE-2012-3527. The attack is possible to be carried out remotely. Moreover, an exploit is present. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in TYPO3 (Content Management System). This issue affects the function unserialize of the file view_help.php of the component Backend Help System. The manipulation with an unknown input leads to a cryptographic issue vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality, and availability. The summary by CVE is:

view_help.php in the backend help system in TYPO3 4.5.x before 4.5.19, 4.6.x before 4.6.12 and 4.7.x before 4.7.4 allows remote authenticated backend users to unserialize arbitrary objects and possibly execute arbitrary PHP code via an unspecified parameter, related to a "missing signature (HMAC)."

The weakness was disclosed 08/15/2012 by Felix Wilhelm as TYPO3-CORE-SA-2012-004 as not defined bulletin (Website). It is possible to read the advisory at typo3.org. The public release has been coordinated in cooperation with the project team. The identification of this vulnerability is CVE-2012-3527 since 06/14/2012. The exploitation is known to be difficult. The attack may be initiated remotely. A simple authentication is required for exploitation. It demands that the victim is doing some kind of user interaction. Technical details as well as a private exploit are known. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

It is declared as proof-of-concept. By approaching the search of inurl:view_help.php it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 61735 (Debian DSA-2537-1 : typo3-src - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks.

Upgrading to version 4.5.19, 4.6.12 or 4.7.4 eliminates this vulnerability. The upgrade is hosted for download at typo3.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (77791), Tenable (61735), SecurityFocus (BID 55052†), OSVDB (84773†) and Secunia (SA50287†). The entries VDB-5985, VDB-5988, VDB-62029 and VDB-62028 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Proof-of-Concept
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 61735
Nessus Name: Debian DSA-2537-1 : typo3-src - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 71862
OpenVAS Name: Debian Security Advisory DSA 2537-1 (typo3-src)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: TYPO3 4.5.19/4.6.12/4.7.4

Timelineinfo

06/14/2012 🔍
08/15/2012 +62 days 🔍
08/15/2012 +0 days 🔍
08/15/2012 +0 days 🔍
08/16/2012 +1 days 🔍
08/17/2012 +1 days 🔍
08/23/2012 +6 days 🔍
08/31/2012 +8 days 🔍
09/05/2012 +5 days 🔍
02/27/2013 +175 days 🔍
03/27/2021 +2950 days 🔍

Sourcesinfo

Product: typo3.org

Advisory: TYPO3-CORE-SA-2012-004
Researcher: Felix Wilhelm
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-3527 (🔍)
GCVE (CVE): GCVE-0-2012-3527
GCVE (VulDB): GCVE-100-5987

OVAL: 🔍

X-Force: 77791
SecurityFocus: 55052 - TYPO3 Core TYPO3-CORE-SA-2012-004 Multiple Remote Security Vulnerabilities
Secunia: 50287 - TYPO3 Multiple Vulnerabilities, Moderately Critical
OSVDB: 84773
Vulnerability Center: 38581 - TYPO3 \x27view_help.php\x27 Allows Remote PHP Code Execution via an Unspecified Parameter, Medium

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

Entryinfo

Created: 08/23/2012 19:04
Updated: 03/27/2021 12:44
Changes: 08/23/2012 19:04 (82), 04/25/2017 11:19 (5), 03/27/2021 12:44 (3)
Complete: 🔍
Committer: olku
Cache ID: 216::103

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