CVE-2010-2054 in Sblim-sfcb
Summary
by MITRE
Integer overflow in httpAdapter.c in httpAdapter in SBLIM SFCB 1.3.4 through 1.3.7, when the configuration sets httpMaxContentLength to a zero value, allows remote attackers to cause a denial of service (heap memory corruption) or possibly execute arbitrary code via a large integer in the Content-Length HTTP header, aka bug #3001915. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 09/15/2021
The vulnerability identified as CVE-2010-2054 represents a critical integer overflow flaw within the SBLIM SFCB (Service Provider Interface for CIM Broker) software version 1.3.4 through 1.3.7. This issue specifically affects the httpAdapter.c component which handles HTTP protocol communications, making it particularly dangerous in networked environments where HTTP traffic is processed. The vulnerability manifests when the system configuration explicitly sets the httpMaxContentLength parameter to zero, creating a dangerous condition that can be exploited by remote attackers to compromise system integrity. The flaw falls under the category of software security vulnerabilities that can lead to either denial of service conditions or potentially arbitrary code execution, making it a significant concern for system administrators and security professionals.
The technical implementation of this vulnerability stems from improper handling of integer values during HTTP header processing within the SBLIM SFCB framework. When the Content-Length HTTP header contains a large integer value and the httpMaxContentLength is configured to zero, the system fails to properly validate or constrain the integer arithmetic operations. This creates an integer overflow condition that can corrupt heap memory structures, leading to unpredictable behavior and potential system crashes. The vulnerability is particularly insidious because it leverages legitimate HTTP protocol mechanisms while exploiting a configuration-specific edge case that may not be immediately obvious to administrators. The integer overflow occurs in the memory allocation and processing routines where the system attempts to convert the Content-Length header value into an integer for processing, but fails to account for the overflow condition that can occur with very large integer values.
The operational impact of CVE-2010-2054 extends beyond simple service disruption to potentially enabling remote code execution, making it a severe threat to system security. Attackers can exploit this vulnerability by sending specially crafted HTTP requests with large Content-Length values, causing the system to allocate insufficient memory or corrupt existing heap structures. This can result in system crashes, denial of service conditions, or in more severe cases, allow attackers to execute arbitrary code on the target system with the privileges of the SFCB process. The vulnerability is particularly dangerous in enterprise environments where SBLIM SFCB serves as a critical component for CIM (Common Information Model) management and monitoring, as it could provide attackers with unauthorized access to system management interfaces and potentially escalate privileges to gain broader network access. The impact is further amplified by the fact that this vulnerability can be exploited remotely without requiring authentication, making it an attractive target for automated attacks.
Mitigation strategies for CVE-2010-2054 should focus on immediate configuration changes and software updates to address the underlying integer overflow condition. System administrators should first ensure that the httpMaxContentLength parameter is configured with appropriate non-zero values that prevent the vulnerable condition from occurring. The recommended approach involves setting this parameter to a reasonable maximum value that aligns with the expected content sizes in the environment while avoiding the zero value that triggers the vulnerability. Additionally, applying the latest security patches from SBLIM SFCB vendors is essential to address the root cause of the integer overflow issue. Organizations should also implement network-level controls such as firewall rules and HTTP request filtering to monitor and restrict suspicious Content-Length header values. This vulnerability aligns with CWE-190, Integer Overflow or Wraparound, and represents a classic example of how improper integer handling can lead to memory corruption vulnerabilities. From an ATT&CK perspective, this vulnerability maps to T1499.004, Network Denial of Service, and potentially T1059.001, Command and Scripting Interpreter, if the arbitrary code execution path is successfully exploited. Regular security assessments and vulnerability scanning should be implemented to identify systems running vulnerable versions of SBLIM SFCB and ensure proper patch management protocols are in place to prevent exploitation.