CVE-2025-6271
BaseFortify
Publication date: 2025-06-19
Last updated on: 2026-04-29
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| swftools | swftools | to 0.9.2 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-125 | The product reads data past the end, or before the beginning, of the intended buffer. |
| CWE-119 | The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2025-6271 is a vulnerability in swftools up to version 0.9.2, specifically in the function wav_convert2mono within the wav2swf component. It is caused by improper bounds checking that leads to an out-of-bounds read (global buffer overflow) when processing specially crafted WAV audio files. This flaw can cause the application to crash or abort due to memory corruption during the mono conversion of WAV data. [1, 2, 3]
How can this vulnerability impact me? :
This vulnerability can impact you by causing denial of service (DoS) through application crashes when processing maliciously crafted WAV files locally. Because it requires local access to exploit, an attacker with local privileges can trigger the crash, potentially disrupting availability. There is also a risk of memory corruption that might be leveraged for arbitrary code execution, although no confirmed exploit for code execution is detailed. [1, 2, 3]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by testing the swftools wav2swf utility with specially crafted WAV input files that trigger the out-of-bounds read in the wav_convert2mono function. A practical detection method is to run wav2swf with a known proof-of-concept crafted WAV file (e.g., wav2swf_crash.in) and observe if the application crashes or aborts due to memory errors. Using AddressSanitizer or similar memory error detection tools while running wav2swf can help identify the out-of-bounds read. Example command: `ASAN_OPTIONS=detect_odr_violation=0 ./wav2swf wav2swf_crash.in` (assuming AddressSanitizer is enabled). Monitoring application crashes or abnormal termination during processing of WAV files locally indicates the presence of the vulnerability. [3]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include avoiding the use of swftools versions up to 0.9.2, especially the wav2swf utility, or restricting local access to trusted users only since exploitation requires local access. Since no known fixes or countermeasures are currently available, consider using alternative software products that do not have this vulnerability. Monitoring for updates or patches from the swftools project and applying them once available is also recommended. [2, 3]