CVE-2012-4459 in qpid
Summary
by MITRE
Integer overflow in the qpid::framing::Buffer::checkAvailable function in Apache Qpid 0.20 and earlier allows remote attackers to cause a denial of service (crash) via a crafted message, which triggers an out-of-bounds read.
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Analysis
by VulDB Data Team • 12/30/2021
The vulnerability described in CVE-2012-4459 represents a critical integer overflow flaw within the Apache Qpid messaging system version 0.20 and earlier. This issue manifests in the qpid::framing::Buffer::checkAvailable function which is responsible for managing buffer operations during message processing. The vulnerability arises from improper handling of integer arithmetic that can lead to unexpected behavior when processing specially crafted messages. When an attacker sends a maliciously constructed message to a Qpid broker, the buffer management logic fails to properly validate the size calculations, creating conditions where integer overflow occurs. This particular flaw falls under the CWE-190 category of Integer Overflow or Wraparound, which is a well-documented weakness in software systems where arithmetic operations produce results that exceed the maximum value representable by the data type.
The technical implementation of this vulnerability involves the manipulation of buffer size parameters during message frame processing within the Qpid messaging infrastructure. When the checkAvailable function processes incoming messages, it performs calculations to determine if sufficient buffer space exists for message handling. Due to the integer overflow condition, these calculations produce incorrect results that can cause the system to attempt memory access at invalid addresses. The out-of-bounds read operation occurs when the system attempts to access memory locations that are beyond the allocated buffer boundaries, leading to memory corruption and ultimately causing the Qpid broker process to crash. This type of vulnerability demonstrates a classic example of how improper input validation and arithmetic handling can lead to system instability and denial of service conditions.
The operational impact of CVE-2012-4459 extends beyond simple service disruption as it represents a remote code execution vector that can be exploited without authentication. Attackers can leverage this vulnerability to systematically crash Qpid broker services, effectively rendering messaging infrastructure unavailable to legitimate users. The vulnerability is particularly concerning in enterprise environments where Qpid is used as a core messaging component for critical business applications. Organizations using affected versions of Apache Qpid face significant risk of operational disruption, as the attack can be executed remotely over the network without requiring any privileged access or credentials. The crash conditions typically result in process termination and service restarts, which can lead to message loss and extended downtime for systems dependent on the messaging infrastructure. This vulnerability directly maps to ATT&CK technique T1499.004 for network denial of service and demonstrates how buffer overflow conditions can be exploited for system compromise.
Mitigation strategies for CVE-2012-4459 primarily focus on immediate version upgrades to Apache Qpid 0.22 or later, where the integer overflow issue has been resolved through proper input validation and arithmetic boundary checks. Organizations should implement network segmentation and access controls to limit exposure of Qpid services to untrusted networks while monitoring for suspicious traffic patterns that may indicate exploitation attempts. Security teams should also consider implementing intrusion detection systems that can identify malformed message patterns associated with this vulnerability. Additionally, regular vulnerability assessments and penetration testing should be conducted to identify similar integer overflow conditions in other components of the messaging infrastructure. The fix implemented in later versions typically involves strengthening the buffer size validation logic to prevent arithmetic overflow conditions and ensuring that all buffer operations include proper boundary checks before memory access occurs. Organizations should also establish incident response procedures specifically addressing denial of service attacks targeting messaging systems to minimize operational impact during exploitation attempts.