Overview
This report discusses CVE-2025-57615, a severe vulnerability discovered in rust-ffmpeg 0.3.0. This security flaw affects rust-ffmpeg users and developers, posing significant risks due to the potential for system compromise or data leakage. The severity of this vulnerability underscores the importance of prompt and effective mitigation.
Vulnerability Summary
CVE ID: CVE-2025-57615
Severity: High (7.5 CVSS)
Attack Vector: Remote
Privileges Required: None
User Interaction: No
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
rust-ffmpeg | 0.3.0 after commit 5ac0527
How the Exploit Works
The CVE-2025-57615 exploit takes advantage of an unchecked cast of a usize parameter to c_int in the Vector::new constructor function of rust-ffmpeg 0.3.0. This unchecked cast can lead to an integer overflow, resulting in a negative value being passed to the underlying C function sws_allocVec(). The result is a null pointer dereference that can cause a denial of service.
Conceptual Example Code
The following pseudocode demonstrates the concept of this vulnerability:
use rust_ffmpeg::Vector;
fn main() {
// Oversized usize value
let size: usize = usize::MAX;
// Unchecked cast to c_int
let vec = Vector::new(size as c_int);
// Call to vulnerable C function
vec.sws_allocVec();
}This pseudocode does not represent an actual exploit but serves to illustrate the nature of the vulnerability. The oversized usize value triggers an integer overflow when cast to c_int, resulting in a negative value being passed to sws_allocVec() and leading to a null pointer dereference.