LimeSurvey 2.05+ common_helper.php autoEscape loadname incomplete blacklist

Summaryinfo

A vulnerability marked as problematic has been reported in LimeSurvey 2.05+. The affected element is the function autoEscape of the file common_helper.php. This manipulation of the argument loadname causes incomplete blacklist. This vulnerability is tracked as CVE-2014-5018. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic was found in LimeSurvey 2.05+ (Survey Software). Affected by this vulnerability is the function autoEscape of the file common_helper.php. The manipulation of the argument loadname with an unknown input leads to a incomplete blacklist vulnerability. The CWE definition for the vulnerability is CWE-184. The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete, leading to resultant weaknesses. As an impact it is known to affect integrity. The summary by CVE is:

Incomplete blacklist vulnerability in the autoEscape function in common_helper.php in LimeSurvey 2.05+ Build 140618 allows remote attackers to conduct cross-site scripting (XSS) attacks via the GBK charset in the loadname parameter to index.php, related to the survey resume.

The weakness was disclosed 07/21/2014 (Website). The advisory is shared at github.com. This vulnerability is known as CVE-2014-5018 since 07/21/2014. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1562.006 for this issue.

By approaching the search of inurl:common_helper.php it is possible to find vulnerable targets with Google Hacking.

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

The entries VDB-70416 and VDB-70415 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Survey Software

Name

• LimeSurvey

Version

• 2.05+

License

• open-source

Website

• Product: https://github.com/LimeSurvey/LimeSurvey/

CPE 2.3info

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CPE 2.2info

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

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