Apache MyFaces Core up to 2.1.4 EL Expression Parameter information disclosure

Summaryinfo

A vulnerability classified as problematic has been found in Apache MyFaces Core up to 2.1.4. Affected by this issue is some unknown functionality of the component EL Expression Handler. Performing a manipulation as part of Parameter results in information disclosure. This vulnerability is known as CVE-2011-4343. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in Apache MyFaces Core up to 2.1.4. This affects some unknown processing of the component EL Expression Handler. The manipulation as part of a Parameter leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

Information disclosure vulnerability in Apache MyFaces Core 2.0.1 through 2.0.10 and 2.1.0 through 2.1.4 allows remote attackers to inject EL expressions via crafted parameters.

The bug was discovered 12/05/2011. The weakness was published 08/08/2017 (Website). The advisory is shared at marc.info. This vulnerability is uniquely identified as CVE-2011-4343 since 11/04/2011. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/07/2021). MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 2073 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370696 (IBM WebSphere Application Server Information Disclosure Vulnerabilities (swg22008707)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at OSVDB (77374†). Similar entry is available at VDB-108607. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Apache

Name

• MyFaces Core

Version

• 2.0.1
• 2.0.2
• 2.0.3
• 2.0.4
• 2.0.5
• 2.0.6
• 2.0.7
• 2.0.8
• 2.0.9
• 2.0.10
• 2.1.0
• 2.1.1
• 2.1.2
• 2.1.3
• 2.1.4

License

• open-source

Website

• Vendor: https://www.apache.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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

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