CVE-2010-4568 in Bugzilla
Summary
by MITRE
Bugzilla 2.14 through 2.22.7; 3.0.x, 3.1.x, and 3.2.x before 3.2.10; 3.4.x before 3.4.10; 3.6.x before 3.6.4; and 4.0.x before 4.0rc2 does not properly generate random values for cookies and tokens, which allows remote attackers to obtain access to arbitrary accounts via unspecified vectors, related to an insufficient number of calls to the srand function.
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Analysis
by VulDB Data Team • 10/13/2021
The vulnerability described in CVE-2010-4568 affects multiple versions of the Bugzilla bug tracking system, specifically ranging from version 2.14 through 2.22.7, and various releases in the 3.x and 4.x series before their respective security patches. This weakness stems from improper random number generation mechanisms used for cookie and token creation within the application's authentication and session management processes. The flaw manifests when the srand function receives insufficient calls during the random number generation sequence, leading to predictable and potentially exploitable values that adversaries can leverage to gain unauthorized access to user accounts.
The technical implementation of this vulnerability lies in the insufficient seeding of random number generators used for critical security components within Bugzilla. When srand is called only once or not frequently enough during the application's runtime, it results in predictable sequences of pseudo-random numbers being generated. This weakness directly maps to CWE-330, which addresses the use of insufficiently random values, and represents a classic example of poor entropy management in cryptographic contexts. The vulnerability enables remote attackers to predict session tokens, authentication cookies, and other security-sensitive values that should be truly random and unpredictable.
From an operational impact perspective, this vulnerability allows remote attackers to perform account takeover attacks without requiring valid credentials or knowledge of user passwords. The unspecified attack vectors suggest that multiple entry points within the application could be exploited, potentially including session hijacking, CSRF token manipulation, or direct account impersonation. Attackers can leverage the predictable random values to craft malicious requests that bypass authentication mechanisms, effectively granting them access to arbitrary user accounts within the Bugzilla instance. This represents a critical security risk for organizations relying on Bugzilla for project management and bug tracking.
The mitigation strategy for this vulnerability involves ensuring that proper seeding of random number generators occurs throughout the application lifecycle, with sufficient calls to srand or equivalent functions to provide adequate entropy. System administrators should immediately upgrade to the patched versions of Bugzilla, specifically versions 3.2.10, 3.4.10, 3.6.4, and 4.0rc2 respectively. Organizations should also implement monitoring for suspicious authentication patterns and consider implementing additional security controls such as multi-factor authentication to reduce the risk of exploitation. This vulnerability aligns with ATT&CK technique T1566, which covers credential harvesting through various means, and represents a significant concern for maintaining the integrity of authentication systems in web applications.