CVE-2017-11665 : What You Need to Know
Learn about CVE-2017-11665 affecting FFmpeg 3.3.2. Remote RTMP servers can exploit this vulnerability, causing a denial of service attack and application crash. Find mitigation steps here.
CVE-2017-11665 was published on July 27, 2017, and affects FFmpeg 3.3.2. This vulnerability allows remote RTMP servers to trigger a denial of service attack, resulting in a Segmentation Violation and application crash.
Understanding CVE-2017-11665
This CVE entry describes a vulnerability in FFmpeg 3.3.2 that can be exploited by remote RTMP servers to cause a denial of service attack.
What is CVE-2017-11665?
The vulnerability lies within the ff_amf_get_field_value function in libavformat/rtmppkt.c in FFmpeg 3.3.2. By manipulating a specially crafted stream, remote RTMP servers can exploit this flaw to crash the affected application.
The Impact of CVE-2017-11665
The exploitation of this vulnerability can lead to a denial of service attack, causing a Segmentation Violation and crashing the application. Malicious actors can remotely trigger this attack by sending a crafted stream to the RTMP server.
Technical Details of CVE-2017-11665
This section provides more technical insights into the vulnerability.
Vulnerability Description
The ff_amf_get_field_value function in libavformat/rtmppkt.c in FFmpeg 3.3.2 allows remote RTMP servers to cause a denial of service by exploiting a crafted stream.
Affected Systems and Versions
- Product: FFmpeg 3.3.2
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
The vulnerability can be exploited by remote RTMP servers through the ff_amf_get_field_value function in libavformat/rtmppkt.c by sending a specially crafted stream.
Mitigation and Prevention
It is crucial to take immediate steps to mitigate the risks posed by CVE-2017-11665.
Immediate Steps to Take
- Apply patches or updates provided by the vendor to address the vulnerability.
- Monitor network traffic for any suspicious activity related to RTMP servers.
- Consider implementing network-level protections to filter out potentially malicious RTMP streams.
Long-Term Security Practices
- Regularly update and patch software to prevent known vulnerabilities.
- Conduct security assessments and audits to identify and address potential weaknesses in the system.
Patching and Updates
Ensure that FFmpeg is updated to a version that includes a fix for CVE-2017-11665 to prevent exploitation of this vulnerability.