CVE-2020-12273 in TestLink
Summary
by MITRE
In TestLink 1.9.20, a crafted login.php viewer parameter exposes cleartext credentials.
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Analysis
by VulDB Data Team • 06/03/2024
The vulnerability identified as CVE-2020-12273 affects TestLink version 1.9.20, a widely used test management tool that facilitates software testing processes. This security flaw resides within the login.php script and represents a critical exposure of sensitive authentication data. The vulnerability stems from improper input validation and handling of the viewer parameter, which allows attackers to manipulate the authentication flow and potentially intercept cleartext credentials during the login process.
The technical implementation of this vulnerability involves the insecure processing of the viewer parameter within the login.php endpoint. When users attempt to authenticate through the TestLink interface, the application fails to properly sanitize or validate the viewer parameter, enabling malicious actors to inject crafted values that reveal authentication credentials in plaintext format. This weakness creates an opportunity for attackers to capture credentials during transmission, particularly when the application does not enforce secure communication protocols or implement proper credential obfuscation mechanisms.
From an operational perspective, this vulnerability poses significant risks to organizations utilizing TestLink for software development and testing activities. The exposure of cleartext credentials can lead to unauthorized access to test environments, potentially compromising the integrity of testing processes and exposing sensitive test data. Attackers could leverage this flaw to escalate privileges, gain administrative access to the TestLink application, and subsequently access associated development systems or databases. The impact extends beyond immediate credential compromise as it may enable further lateral movement within the testing infrastructure and potentially affect the broader software development lifecycle.
The vulnerability aligns with CWE-200, which addresses information exposure, and represents a classic example of credential exposure during authentication processes. From an adversarial perspective, this flaw maps to ATT&CK technique T1078.004, which covers valid accounts with compromised credentials, and T1566, which involves credential harvesting through phishing or related attacks. The vulnerability demonstrates a failure in input validation and output encoding practices that are fundamental to secure application development and authentication system design.
Organizations should implement immediate mitigations including applying the vendor-provided patches or updates to TestLink version 1.9.20, enforcing secure communication protocols such as HTTPS with strong encryption, and implementing proper input validation mechanisms for all parameters in the authentication flow. Network segmentation and monitoring solutions should be deployed to detect anomalous authentication patterns and potential credential exposure attempts. Additionally, organizations should conduct comprehensive security assessments of their TestLink installations and review access controls to minimize the potential impact of credential compromise. The remediation process should also include educating development teams about secure coding practices and implementing proper credential handling procedures that prevent cleartext exposure during authentication processes.