FFmpeg through 9.0.2 contains an infinite loop vulnerability in ff_rtsp_connect() in libavformat/rtsp.c that follows RTSP 3xx redirects without any redirect limit. Attackers controlling an RTSP server can answer every request with a 302 redirect to itself or another server, causing endless reconnects that saturate a CPU core.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Ffmpeg Ffmpeg
cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
|
— |
<= 9.0.2
|
References 5
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24902
disclosure@vulncheck.com
https://gist.github.com/OxBat/648a0bd60c898f2ffb418e131ce26013
disclosure@vulncheck.com
https://github.com/FFmpeg/FFmpeg
disclosure@vulncheck.com
https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavformat/rtsp.c#L2225
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-infinite-loop-via-rts…
disclosure@vulncheck.com