CVE-2024-51739
Published: 05 November 2024
Summary
CVE-2024-51739 is a high-severity Exposure of Sensitive Information to an Unauthorized Actor (CWE-200) vulnerability in Combodo Itop. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 3.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Combodo iTop, a web-based IT Service Management tool, contains an information disclosure vulnerability that permits unauthenticated user enumeration. The flaw stems from observable differences in responses during password reset operations, allowing remote attackers to distinguish valid accounts from invalid ones and thereby facilitating subsequent brute-force attempts. It is tracked under CWE-200 and CWE-203 and carries a CVSS 3.1 base score of 7.5 reflecting network attack vector, low complexity, and no required privileges or user interaction.
An unauthenticated attacker can repeatedly invoke the password reset function with chosen login values and observe whether the returned message indicates an existing user. Successful enumeration narrows the target space for credential-stuffing or password-guessing attacks against the application’s authentication system.
The official advisory recommends upgrading to iTop versions 2.7.11, 3.0.5, 3.1.2, or 3.2.0, which replace the user-existence message with a generic response. Organizations unable to upgrade can override the dictionary entry “UI:ResetPwd-Error-WrongLogin” via an extension to suppress the distinguishing text.
The EPSS score for this CVE rose from a low baseline to a recorded peak of 0.4690, indicating emerging exploitation interest after public disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-45521
Vulnerability details
Combodo iTop is a simple, web based IT Service Management tool. Unauthenticated user can perform users enumeration, which can make it easier to bruteforce a valid account. As a fix the sentence displayed after resetting password no longer shows if…
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the user exists or not. This fix is included in versions 2.7.11, 3.0.5, 3.1.2, and 3.2.0. Users are advised to upgrade. Users unable to upgrade may overload the dictionary entry `"UI:ResetPwd-Error-WrongLogin"` through an extension and replace it with a generic message.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Concealment techniques directly prevent real sensitive data from being exposed to adversaries.
Restricts error message visibility to authorized recipients, directly reducing unauthorized exposure of sensitive information.
Automated marking applies security attributes to system outputs, making it harder for attackers to exploit unmarked sensitive information leading to unauthorized exposure.
Proper attribute retention and permitted-value enforcement limits unauthorized actors from accessing sensitive information lacking correct labels.
Prevents unauthorized exposure of sensitive information by prohibiting untrusted external systems from processing or storing it.
By enforcing authorization matching prior to sharing, the control reduces the risk of exposing sensitive information to unauthorized actors.
Review and removal of nonpublic information from publicly accessible systems directly prevents exposure of sensitive data to unauthorized actors.
Data mining protection mechanisms detect and block unauthorized bulk extraction of sensitive data, directly mitigating exposure to unauthorized actors.