Description (CNA)
SWUpdate contains an integer underflow vulnerability in the multipart upload parser in mongoose_multipart.c that allows unauthenticated attackers to cause a denial of service by sending a crafted HTTP POST request to /upload with a malformed multipart boundary and controlled TCP stream timing. Attackers can trigger an integer underflow in the mg_http_multipart_continue_wait_for_chunk() function when the buffer length falls within a specific range, causing an out-of-bounds heap read past the allocated receive buffer to a local IPC socket.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| sbabic / swupdate | affected 0 through 2025.12; unaffected beee2dc0feef1cfe84f1aa6fc980e104b2e47a74 |
CWE
CWE-191, CWE-125
References
- https://github.com/sbabic/swupdate/commit/beee2dc0feef1cfe84f1aa6fc980e104b2e47a74
- https://www.vulncheck.com/advisories/swupdate-integer-underflow-in-multipart-upload-parser
ADP enrichment
No English description supplied.
No references supplied.