CVE-2014-8675 in Soplanning
Summary
by MITRE
Soplanning 1.32 and earlier generates static links for sharing ICAL calendars with embedded login information, which allows remote attackers to obtain a calendar owner's password via a brute-force attack on the embedded password hash.
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Analysis
by VulDB Data Team • 05/02/2025
The vulnerability identified as CVE-2014-8675 affects Soplanning version 1.32 and earlier, presenting a critical security flaw in how the application handles calendar sharing functionality. This issue stems from the application's design decision to generate static links that embed login credentials directly within the iCal calendar files. The implementation creates a significant attack surface where malicious actors can exploit the embedded authentication information to conduct unauthorized access attempts against calendar owner accounts.
The technical flaw resides in the application's approach to sharing calendar data through iCal format, where the system generates static URLs containing embedded password hashes or credentials. This design violates fundamental security principles by exposing authentication tokens in a format that can be easily intercepted and analyzed. The embedded credentials are not properly secured or randomized, making them susceptible to automated brute-force attacks that can systematically test various password combinations against the exposed hash values.
The operational impact of this vulnerability extends beyond simple unauthorized access to calendar data. Attackers can leverage the embedded password hashes to compromise multiple calendar accounts simultaneously, especially when users employ weak or commonly used passwords. The static nature of these links means that once obtained, the authentication information remains valid indefinitely, providing persistent access to calendar resources. This vulnerability particularly affects organizations relying on calendar sharing features, as it enables attackers to gain unauthorized access to sensitive scheduling information, meeting details, and potentially personal data stored within these calendar systems.
From a cybersecurity perspective, this vulnerability aligns with CWE-384, which addresses the use of weak session identifiers, and relates to ATT&CK technique T1110.003 for credential access through brute force attacks. The flaw represents a critical design oversight in the application's security architecture, where authentication mechanisms are not properly separated from sharing functionality. Organizations should implement immediate mitigations including disabling calendar sharing features until the vulnerability is patched, implementing stronger password policies, and conducting thorough audits of all embedded authentication tokens within calendar and scheduling systems. The vulnerability also highlights the importance of following secure coding practices and conducting comprehensive security reviews of all application features that handle user authentication information.