CVE-2023-4709
LowCVSS 3.1Exploitation Probability (EPSS)
Low risk25th percentile — higher than 25% of all known CVEs
Summary
A vulnerability has been found in TOTVS RM 12.1 that allows cross site scripting attacks through manipulation of the VIEWSTATE argument in the Login.aspx file. The attack can be executed remotely, but its complexity is high.
Risk Assessment
The organization may be exposed to XSS attacks that could lead to user data theft or session hijacking. The risk is minimized in standard production environments where the VIEWSTATE feature is disabled by default.
Recommendation
It is recommended to apply the configuration setting <pages validateRequest="true" [...] viewStateEncryptionMode="Always" /> to mitigate the risk. Additionally, ensure that configurations align with the default application settings.
Original NVD description (English source)
A vulnerability classified as problematic has been found in TOTVS RM 12.1. Affected is an unknown function of the file Login.aspx of the component Portal. The manipulation of the argument VIEWSTATE leads to cross site scripting. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. It is possible to mitigate the problem by applying the configuration setting <pages validateRequest="true" [...] viewStateEncryptionMode="Always" />. It is recommended to change the configuration settings. The vendor was initially contacted early about this disclosure but did not respond in any way. In a later statement he explains, that "the behavior described [...] is related to specific configurations that are not part of the default application setup. In standard production environments, the relevant feature (VIEWSTATE) is disabled by default, which effectively mitigates the risk of exploitation."