CVE-2025-66869
Buffer Overflow in libming 0.4.8 strcat Function
Publication date: 2025-12-29
Last updated on: 2025-12-29
Assigner: MITRE
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| libming | libming | 0.4.8 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a buffer overflow in the strcat function within the asan_interceptors.cpp file of libming version 0.4.8. A buffer overflow occurs when more data is written to a buffer than it can hold, potentially leading to memory corruption or unexpected behavior.
How can this vulnerability impact me? :
The buffer overflow vulnerability could allow an attacker to cause a crash, execute arbitrary code, or corrupt memory, which may lead to system instability or compromise.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by running the vulnerable `swftophp` utility from libming 0.4.8 with specially crafted malformed SWF files that trigger the heap-buffer-overflow in the `strcat` function. Using AddressSanitizer (ASan) during execution can help detect the overflow, as ASan reports the heap-buffer-overflow at runtime. A practical detection method is to execute `swftophp` on suspicious or untrusted SWF files and monitor for ASan error reports or crashes. Example command to run with ASan enabled: `ASAN_OPTIONS=detect_stack_use_after_return=1 ./swftophp malformed.swf`. Additionally, monitoring crash logs or core dumps related to `swftophp` can indicate exploitation attempts. [1]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include: 1) Avoid processing untrusted or malformed SWF files with the vulnerable `swftophp` utility from libming 0.4.8. 2) Apply any available patches or updates to libming that address this buffer overflow vulnerability. 3) If patching is not immediately possible, consider running `swftophp` in a restricted or sandboxed environment to limit potential damage from exploitation. 4) Monitor systems for crashes or unusual behavior related to `swftophp` executions. 5) Use AddressSanitizer or similar runtime memory error detection tools during testing to identify problematic inputs. [1]