CVE-2021-45078 is a high-severity vulnerability affecting GNU Binutils versions through 2.37. This vulnerability allows attackers to cause a denial of service (heap-based buffer overflow) or potentially have other unspecified impacts, as demonstrated by an out-of-bounds write. The issue arises due to an incorrect fix for CVE-2018-12699, which has implications for the security of various systems relying on this software.
With a CVSS score of 7.8, this vulnerability is classified as high severity, indicating a significant risk to systems. The attack vector is local, requiring low complexity and no privileges to exploit, but it necessitates user interaction. The potential impacts include high confidentiality, integrity, and availability risks, which underscores the urgency for organizations to address this vulnerability.
Organizations using affected versions of GNU Binutils should prioritize patching immediately to mitigate risks associated with this vulnerability. The potential for denial of service attacks poses a severe threat, particularly in environments where GNU Binutils is integral to system operations.
The vulnerability was published on December 15, 2021, and has since been classified as modified due to ongoing developments in the threat landscape. Security teams should remain vigilant and monitor for updates regarding this issue.
Vulnerability Details
The stab_xcoff_builtin_type function in stabs.c within GNU Binutils versions through 2.37 is the root cause of this vulnerability. The incorrect handling of memory operations leads to heap-based buffer overflow conditions, making it susceptible to exploitation. The vulnerability has been assigned a CWE classification of CWE-787, indicating improper control of a resource through its lifetime.
It is crucial for organizations to keep their systems updated and to apply any patches provided by the vendor to safeguard against this vulnerability.
Technical Analysis
The root cause of CVE-2021-45078 lies in the handling of memory within the stab_xcoff_builtin_type function. Attackers can exploit this weakness locally due to low attack complexity and the requirement for user interaction. The attack vector is local, meaning that an attacker needs access to the system to trigger the vulnerability, but it does not require elevated privileges. The potential impacts are severe, affecting confidentiality, integrity, and availability.
The vulnerability's nature allows for a denial of service attack, where the system may become unresponsive, leading to downtime and disrupt operations. Organizations should assess their exposure to this vulnerability and take necessary precautions.
Risk & Impact Analysis
Risk to organizations includes the potential for denial of service attacks that could significantly disrupt operations. The availability impact is particularly concerning for critical systems, as downtime can lead to financial losses and damage to reputation. Organizations using affected components must prioritize remediation due to the high CVSS score and associated risks.
Given that this vulnerability is not included in the Known Exploited Vulnerabilities (KEV) catalog, it is essential for organizations to remain proactive in their vulnerability management strategies, ensuring timely updates and patches are applied.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects GNU Binutils versions through 2.37, along with various distributions including Fedora (versions 34 and 35), Red Hat Enterprise Linux (version 8.0), and Debian (versions 9.0, 10.0, and 11.0). Organizations should ensure they are using the patched versions to mitigate risks.
Mitigation & Remediation
Organizations should apply patches as soon as they are available from vendors. For those using GNU Binutils, upgrading to a version beyond 2.37 is critical. Additionally, organizations should consider implementing additional security measures, such as restricting access to systems running vulnerable software to reduce exposure.
For further evaluation of security posture, organizations may consider engaging in penetration testing services that simulate attack scenarios to identify potential weaknesses.
Detection Guidance
To detect potential exploitation attempts, organizations should monitor logs for any abnormal behavior, particularly those related to memory operations or buffer handling. Behavioral anomalies may indicate attempts to exploit this vulnerability, necessitating further investigation.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2021-45078 highlights the necessity for organizations to maintain rigorous vulnerability management processes. This incident serves as a reminder of the potential consequences of seemingly minor coding errors, particularly in widely used software components.
Security teams should take this as a lesson in the importance of thorough testing and validation of patches before deployment, as well as the value of continuous monitoring and assessment of software security.
For organizations looking to enhance their security posture, resources such as the penetration testing methodology can provide valuable insights into effective security practices.
Ultimately, proactive measures and informed security strategies are fundamental in mitigating risks posed by vulnerabilities like CVE-2021-45078.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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