CVE-2007-2290 in CafeLog
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in B2 Weblog and News Publishing Tool 0.6.1 allow remote attackers to execute arbitrary PHP code via a URL in the b2inc parameter to (1) b2archives.php, (2) b2categories.php, or (3) b2mail.php. NOTE: this may overlap CVE-2002-1466.
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Analysis
by VulDB Data Team • 06/25/2025
The vulnerability described in CVE-2007-2290 represents a critical remote code execution flaw affecting the B2 Weblog and News Publishing Tool version 0.6.1. This issue stems from improper input validation within the application's handling of user-supplied data, specifically in three distinct script files that process the b2inc parameter. The vulnerability manifests when the application fails to properly sanitize or validate external input before incorporating it into file inclusion operations, creating a pathway for malicious actors to inject arbitrary PHP code. The affected files b2archives.php, b2categories.php, and b2mail.php all share this common weakness, making the attack surface broader than initially apparent.
This vulnerability directly maps to CWE-94, which describes the weakness of allowing execution of arbitrary code or commands, and specifically relates to improper validation of input parameters. The flaw operates through a classic remote file inclusion attack vector where an attacker can manipulate the b2inc parameter to reference external URLs containing malicious PHP payloads. When the vulnerable application processes these parameters, it effectively executes the code from the remote location as if it were part of the local application. The attack requires no authentication and can be executed from any remote location, making it particularly dangerous for publicly accessible web applications.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise. Once exploited, attackers can gain full control over the web server hosting the vulnerable application, potentially leading to data theft, service disruption, or use as a pivot point for attacking other systems within the network. The vulnerability's remote nature means that attackers can leverage it from anywhere on the internet without requiring physical access or prior system compromise. This makes it an attractive target for automated exploitation campaigns and increases the potential for widespread damage across multiple installations. The overlap with CVE-2002-1466 suggests this represents a persistent flaw pattern in the B2 platform that was not adequately addressed in the 0.6.1 release.
Mitigation strategies for this vulnerability should focus on immediate remediation through patching the affected application to version 0.6.2 or later, which contains the necessary security fixes. Organizations should implement proper input validation and sanitization measures, particularly for parameters that influence file inclusion operations. The principle of least privilege should be applied by restricting the web server's ability to include files from external sources. Network-level protections such as firewall rules blocking access to vulnerable endpoints and web application firewalls can provide additional defense in depth. Additionally, regular security assessments and vulnerability scanning should be conducted to identify similar flaws in other applications. According to ATT&CK framework, this vulnerability would be categorized under T1190 for exploit public-facing application, and T1059 for command and scripting interpreter, with potential lateral movement opportunities once compromised. The vulnerability demonstrates the critical importance of input validation and secure coding practices in preventing remote code execution attacks that can lead to complete system compromise.