CVE-2020-25105 in Eramba
Summary
by MITRE
eramba c2.8.1 and Enterprise before e2.19.3 has a weak password recovery token (createHash has only a million possibilities).
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Analysis
by VulDB Data Team • 09/04/2020
The vulnerability identified as CVE-2020-25105 affects the eramba security platform version 2.8.1 and Enterprise versions prior to e2.19.3, presenting a critical weakness in the password recovery mechanism that significantly undermines system security. This flaw resides in the implementation of the createHash function which generates password recovery tokens, creating a predictable and easily exploitable vector for unauthorized access attempts. The weakness stems from the limited entropy of the hash generation algorithm, reducing the possible token combinations to only one million possibilities, making brute force attacks highly effective and feasible.
The technical implementation of this vulnerability demonstrates poor cryptographic practices and inadequate entropy in token generation, directly violating security best practices outlined in industry standards such as CWE-330 Use of Insufficiently Random Values. The createHash function fails to utilize proper randomization mechanisms that would ensure sufficient entropy for secure token generation, instead relying on a deterministic approach that produces only 10^6 possible combinations. This mathematical limitation creates a massive attack surface where an attacker can systematically test all possible token values within reasonable time frames, effectively nullifying the security measures intended to protect user accounts.
The operational impact of this vulnerability extends beyond simple account compromise, as it represents a fundamental flaw in the authentication system's integrity and trust model. Attackers can leverage this weakness to perform automated password reset attacks across multiple user accounts, potentially leading to widespread unauthorized access to sensitive organizational data and systems. The vulnerability creates a persistent threat vector that remains active until the affected software is updated, allowing attackers to maintain access even after legitimate users attempt to reset their passwords. This type of attack aligns with techniques described in the MITRE ATT&CK framework under the credential access category, specifically targeting password reset functionality as a means of gaining unauthorized system access.
Mitigation strategies for this vulnerability require immediate software updates to versions e2.19.3 or later where the password recovery token generation has been properly enhanced with sufficient entropy. Organizations should implement additional security controls including rate limiting on password reset requests, account lockout mechanisms after failed attempts, and monitoring for unusual password reset patterns. The fix addresses the root cause by implementing proper cryptographic randomization in the token generation process, ensuring that recovery tokens possess adequate entropy to resist brute force attacks. Security teams should also conduct comprehensive vulnerability assessments to identify any other instances of weak randomization or predictable value generation within the platform, as this represents a broader class of cryptographic weaknesses that could affect other security functions.