A vulnerability, which was classified as problematic, was found in GNU Binutils up to version 2.43. This vulnerability allows manipulation of the argument buf in the function disassemble_bytes of the file binutils/objdump.c, leading to a stack-based buffer overflow. The complexity of an attack is rather high, and while it is possible to initiate the attack remotely, the exploitability is considered difficult. The exploit has been disclosed to the public and may be used. Organizations should prioritize patching immediately.
Upgrading to version 2.44 addresses this issue. The identifier of the patch is baac6c221e9d69335bf41366a1c7d87d8ab2f893. With a CVSS base score of 6.3, this vulnerability is classified as medium severity and poses a significant risk to organizations that utilize GNU Binutils.
Risk to organizations includes potential unauthorized access and disruption of service due to exploitation of the stack-based buffer overflow. Immediate action is advised to mitigate these risks.
The vulnerability was published on January 29, 2025, and organizations using affected versions should take steps to update their systems without delay.
Vulnerability Details
The vulnerability in GNU Binutils affects the function disassemble_bytes, which processes the argument buf. The resulting buffer overflow can be exploited remotely, although the complexity of the attack is high. This vulnerability has been classified under multiple Common Weakness Enumerations (CWE), including CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer), CWE-121 (Stack-Based Buffer Overflow), and CWE-787 (Out-of-bounds Write).
The CVSS score for this vulnerability is 6.3, indicating a medium severity. The risk of exploitation is present, particularly given that the exploit has been made public. Organizations should assess their risk posture and prioritize remediation efforts.
Technical Analysis
The root cause of this vulnerability is a failure to adequately validate the argument buf in the disassemble_bytes function. This oversight allows for a stack-based buffer overflow, which can be exploited by injecting malicious input. The attack vector is network-based, requiring no special privileges or user interaction, but the attack complexity is high.
The confidentiality, integrity, and availability impacts are classified as low, but successful exploitation could lead to significant disruptions. Organizations should implement security controls to monitor for unusual behaviors that could indicate exploitation attempts.
Risk & Impact Analysis
The real-world deployment risk associated with this vulnerability is significant, particularly for organizations that rely on GNU Binutils for their operations. The potential blast radius includes any systems that utilize this library, which could be numerous in enterprise environments.
Given the medium CVSS score, organizations should address this vulnerability in their priority patch cycle. The urgency for remediation is underscored by the fact that the exploit is publicly known, and the attack complexity, while high, does not preclude motivated attackers.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of GNU Binutils prior to 2.44 are affected by this vulnerability. Organizations should ensure they upgrade to the latest version to mitigate potential risks.
Mitigation & Remediation
Organizations should upgrade to GNU Binutils version 2.44 or later to address this vulnerability. If upgrading is not possible, consider implementing additional security controls to monitor and restrict access to the affected function. Configuration hardening and regular audits can help minimize exposure.
For effective remediation, organizations may also consider engaging in penetration testing to validate the effectiveness of their security measures and ensure no vulnerabilities remain.
Detection Guidance
Organizations should monitor logs for any indicators of exploitation attempts, particularly focusing on any unusual access patterns to the disassemble_bytes function. Behavioral anomalies, such as unexpected crashes or memory corruption alerts, should also be investigated.
AppSecure Threat Intelligence Insight
This vulnerability highlights the importance of maintaining up-to-date software components. As organizations increasingly rely on open-source tools like GNU Binutils, understanding and mitigating vulnerabilities becomes critical. Security teams should establish a vulnerability management program to proactively address risks. Regular updates and audits can help in identifying vulnerabilities before they can be exploited.
Moreover, security teams should stay informed about the latest threats and trends in application security. Engaging in penetration testing methodology can further enhance their security posture against such vulnerabilities.
In summary, understanding the implications of vulnerabilities like CVE-2025-0840 is essential for organizations. By prioritizing updates and employing robust security practices, they can effectively manage their risk exposure.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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