Crypttech CryptoLog up to 2009 login.php logshares_ajax sql injection

Summaryinfo

A vulnerability classified as critical has been found in Crypttech CryptoLog up to 2009. Impacted is the function logshares_ajax of the file login.php. Performing a manipulation results in sql injection. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is known as CVE-2025-34102. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in Crypttech CryptoLog up to 2009. This affects the function logshares_ajax of the file login.php. The manipulation with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A remote code execution vulnerability exists in CryptoLog (PHP version, discontinued since 2009) due to a chained exploitation of SQL injection and command injection vulnerabilities. An unauthenticated attacker can gain shell access as the web server user by first exploiting a SQL injection flaw in login.php to bypass authentication, followed by command injection in logshares_ajax.php to execute arbitrary operating system commands. The login bypass is achieved by submitting crafted SQL via the user POST parameter. Once authenticated, the attacker can abuse the lsid POST parameter in the logshares_ajax.php endpoint to inject and execute a command using $(...) syntax, resulting in code execution under the web context. This exploitation path does not exist in the ASP.NET version of CryptoLog released since 2009.

The weakness was published by Mehmet Ince. It is possible to read the advisory at pentest.blog. This vulnerability is uniquely identified as CVE-2025-34102 since 04/15/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/11/2025). The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

By approaching the search of inurl:login.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-21029). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Crypttech

Name

• CryptoLog

Version

• 2009

Support

• end of life

CPE 2.3info

• 🔒

CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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