A flaw was identified in the NTLM authentication handling of the libsoup HTTP library, used by GNOME and other applications for network communication. When processing extremely long passwords, an internal size calculation can overflow due to improper use of signed integers. This results in incorrect memory allocation on the stack, followed by unsafe memory copying. As a result, applications using libsoup may crash unexpectedly, creating a denial-of-service risk.
This vulnerability is classified as high severity with a CVSS score of 8.6. The improper handling of input can lead to application crashes, which could disrupt services and affect user experience significantly.
Organizations should prioritize patching immediately. The ramifications of not addressing this flaw can lead to severe service interruptions, particularly in environments relying on the libsoup library for critical operations.
Currently, this vulnerability is awaiting analysis, and no public exploit has been confirmed. However, the potential for exploitation exists, making timely remediation essential.
Vulnerability Details
The vulnerability results from a flaw in the NTLM authentication handling of the libsoup HTTP library. Specifically, an internal size calculation can overflow when processing overly long passwords, leading to incorrect memory allocation and unsafe memory copying.
The CVSS score of 8.6 indicates a high severity level, reflecting the ease of exploitation due to low attack complexity and no required privileges or user interaction.
The vulnerability is classified under CWE-121, which pertains to stack-based buffer overflow conditions.
Technical Analysis
The root cause of this vulnerability stems from improper handling of input data, specifically in how the libsoup library calculates and manages buffer sizes for NTLM authentication. The flawed implementation does not adequately validate the length of incoming password data, allowing for potential overflow conditions.
The attack vector is over the network, with low complexity and no required privileges, making it particularly concerning for organizations using this library in their applications. The impacts on confidentiality and integrity are low, but the availability impact is high, as affected applications can crash unexpectedly.
Risk & Impact Analysis
Risk to organizations includes potential service disruptions and denial-of-service conditions, particularly in applications relying heavily on libsoup for network communications. The high availability impact means that organizations could face significant downtime, leading to financial losses and reputational damage.
The urgency for addressing this vulnerability is high, given its potential to significantly disrupt services. Organizations should assess their usage of libsoup and prioritize patching this vulnerability as soon as updates are available.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
At this time, specific versions affected by this vulnerability have not been disclosed. Organizations are advised to consider all versions of the libsoup HTTP library prior to any vendor patches.
Mitigation & Remediation
Organizations should prioritize patching immediately. Regularly check for updates and apply patches from the vendor as they become available. If a patch is not available, consider implementing workarounds such as limiting password lengths and monitoring for abnormal application behavior.
For more information on ensuring the effectiveness of remediation, organizations can refer to continuous penetration testing to identify similar weaknesses.
Detection Guidance
Monitor logs for unusual authentication failures, especially related to NTLM. Look for indicators of buffer overflow conditions or crashes in applications that utilize the libsoup library.
AppSecure Threat Intelligence Insight
This vulnerability highlights the importance of rigorous input validation in libraries used for network communication. Security teams should review their applications for similar flaws and ensure that they are following secure coding practices.
For further insights, organizations can explore penetration testing methodology and the importance of vulnerability management programs to proactively address such security challenges.
Additionally, understanding the role of API security testing can further enhance the security posture of applications utilizing libsoup.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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