CVE-2023-49032 in Self Service Password
Summary
by MITRE • 12/21/2023
An issue in LTB Self Service Password before v.1.5.4 allows a remote attacker to execute arbitrary code and obtain sensitive information via hijack of the SMS verification code function to arbitrary phone.
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Analysis
by VulDB Data Team • 03/02/2026
The vulnerability identified as CVE-2023-49032 represents a critical security flaw in the LTB Self Service Password application version 1.5.3 and earlier. This issue stems from inadequate input validation and authentication mechanisms within the SMS verification code functionality, creating a pathway for remote attackers to manipulate the system's behavior. The vulnerability specifically targets the authentication flow where users are expected to receive verification codes via SMS to reset their passwords or modify account settings. Attackers can exploit this weakness to intercept or manipulate the SMS delivery process, potentially gaining unauthorized access to user accounts and sensitive information.
The technical implementation of this vulnerability involves the manipulation of the SMS verification code function to redirect or hijack verification codes intended for legitimate users. This flaw allows attackers to either force the system to send verification codes to arbitrary phone numbers they control or to intercept and reuse existing verification codes. The underlying issue likely resides in how the application handles user phone number inputs and verification code generation, potentially lacking proper sanitization of input parameters and insufficient validation of the destination phone number. This type of vulnerability falls under CWE-20, which describes improper input validation, and CWE-345, which addresses insufficient verification of data integrity.
The operational impact of CVE-2023-49032 extends beyond simple privilege escalation to encompass comprehensive account compromise and potential data breaches. An attacker exploiting this vulnerability could gain unauthorized access to multiple user accounts, particularly in environments where the self-service password reset functionality is widely used. The attack vector is particularly concerning because it requires no local access or specialized privileges, making it accessible to remote attackers. The vulnerability enables a range of malicious activities including account takeovers, credential theft, and potential lateral movement within the affected systems. This represents a significant threat to organizations relying on the LTB Self Service Password solution for identity management, as it undermines the fundamental security assumptions of the password reset process.
Mitigation strategies for CVE-2023-49032 must focus on immediate remediation through the deployment of the patched version 1.5.4 or later. Organizations should also implement additional security controls including enhanced monitoring of authentication attempts, implementation of rate limiting for SMS requests, and verification of phone number ownership through additional authentication factors. The fix should address the core issue of input validation for phone number parameters and ensure proper isolation of verification code delivery mechanisms. Security teams should also consider implementing multi-factor authentication requirements for password reset operations and establishing incident response procedures to detect and respond to potential exploitation attempts. This vulnerability demonstrates the importance of secure coding practices and proper validation of user inputs in authentication systems, aligning with ATT&CK technique T1566 which covers credential harvesting through social engineering and system exploitation.
Organizations utilizing the LTB Self Service Password application must conduct immediate vulnerability assessments to identify systems running affected versions and prioritize patch deployment. The vulnerability landscape for authentication systems continues to evolve, with attackers increasingly targeting weaknesses in password reset and account recovery mechanisms. This particular flaw highlights the need for comprehensive security testing of identity management solutions and the importance of maintaining up-to-date security patches. The remediation process should include thorough testing of the patched version to ensure that the fix does not introduce regressions in functionality while maintaining the security improvements. Continuous monitoring of authentication logs for suspicious patterns and implementing robust access controls remain essential defensive measures against exploitation attempts.