Critical Buffer Overflow Vulnerability in tcpdump: CVE-2017-5341
Summary
ALPINE-CVE-2017-5341: The OTV parser in tcpdump before 4.9.0 has a buffer overflow in print-otv.c:otv_print(). Affects tcpdump versions < 4.9.0-r0. Fixed in 4.9.0-r0. How to fix ↓
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Background
tcpdump is a widely used command-line packet analyzer tool that allows users to capture and analyze network traffic. It is essential for network diagnostics, security analysis, and troubleshooting. The tool supports various protocols and provides detailed insights into network packets. However, tcpdump versions prior to 4.9.0 are vulnerable to a buffer overflow issue in its OTV parser, which can lead to severe security risks.
Vulnerability Detail
The vulnerability, identified as CVE-2017-5341, originates from a buffer overflow in the OTV parser located in print-otv.c:otv_print(). This flaw can be exploited by an attacker to execute arbitrary code, potentially leading to unauthorized access, data corruption, or service disruption. The CVSS score for this vulnerability is 9.8, indicating a critical severity level that necessitates immediate attention.
How To Fix
Minimum fixed version
4.9.0-r0
This is the first release that contains the fix.
sudo apk add --upgrade tcpdumpTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not feasible, consider restricting access to tcpdump or running it in a controlled environment to mitigate potential exploitation risks. Additionally, monitor network traffic closely for any unusual activities.
Conclusion
The buffer overflow vulnerability in tcpdump, identified as CVE-2017-5341, poses a critical risk to network security. Immediate action is required to update to the patched version to mitigate potential exploitation. Users are encouraged to monitor their systems and utilize tools like Vulert for ongoing vulnerability management.
See every vulnerability recorded for tcpdump →
FAQ
CVE-2017-5341 is a critical buffer overflow vulnerability found in tcpdump versions prior to 4.9.0, affecting its OTV parser.
An attacker can exploit this vulnerability by sending specially crafted packets to tcpdump, leading to arbitrary code execution.
Exploitation can result in unauthorized access, data corruption, or service disruption, posing significant risks to network security.
Check your tcpdump version using the command 'tcpdump --version'. If it is below 4.9.0, it is vulnerable.
Vulert monitors and alerts for open-source vulnerabilities in software using a manifest file like package-lock.json. You can check your application for vulnerabilities using the Vulert playground without signup.
References
Related vulnerabilities
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