TYPO3 up to 4.7.3 HTML Sanitizing API t3lib_div RemoveXSS cryptographic issue

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.
4.9$0-$5k0.00

Summaryinfo

A vulnerability was found in TYPO3. It has been rated as critical. Affected by this issue is the function RemoveXSS in the library t3lib_div of the component HTML Sanitizing API. Performing a manipulation results in cryptographic issue. This vulnerability is known as CVE-2012-3527. Remote exploitation of the attack is possible. Furthermore, an exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in TYPO3 (Content Management System). This affects the function RemoveXSS in the library t3lib_div of the component HTML Sanitizing API. The manipulation with an unknown input leads to a cryptographic issue vulnerability. CWE is classifying the issue as CWE-310. This is going to have an impact on confidentiality, and integrity. 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 published 08/15/2012 by Andreas Schnapp and Christian Nösterer with Secunia Research und Microsoft as TYPO3-CORE-SA-2012-004 as not defined bulletin (Website). The advisory is shared at typo3.org. The public release has been coordinated with the project team. This vulnerability is uniquely identified as CVE-2012-3527 since 06/14/2012. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details and a private exploit are known. MITRE ATT&CK project uses the attack technique T1600 for this issue.

It is declared as proof-of-concept. 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 and running in the context l.

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 (84772†) and Secunia (SA50287†). Similar entries are available at VDB-5987, VDB-5988, VDB-62029 and VDB-62028. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 4.9

VulDB Base Score: 5.4
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 61735
Nessus Name: Debian DSA-2537-1 : typo3-src - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
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 🔍
08/16/2012 +1 days 🔍
08/17/2012 +1 days 🔍
08/23/2012 +6 days 🔍
08/31/2012 +8 days 🔍
09/05/2012 +5 days 🔍
04/28/2019 +2426 days 🔍

Sourcesinfo

Product: typo3.org

Advisory: TYPO3-CORE-SA-2012-004
Researcher: Andreas Schnapp, Christian Nösterer
Organization: Secunia Research und Microsoft
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-3527 (🔍)
GCVE (CVE): GCVE-0-2012-3527
GCVE (VulDB): GCVE-100-5985

OVAL: 🔍

X-Force: 77791
SecurityFocus: 55052
Secunia: 50287 - TYPO3 Multiple Vulnerabilities, Moderately Critical
OSVDB: 84772

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

Entryinfo

Created: 08/23/2012 18:38
Updated: 04/28/2019 18:26
Changes: 08/23/2012 18:38 (82), 04/28/2019 18:26 (2)
Complete: 🔍
Committer: olku
Cache ID: 216:C0D:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!