जमा करें #834207: yealink T46U 108.86.0.118 Stack-based Buffer Overflowजानकारी

शीर्षकyealink T46U 108.86.0.118 Stack-based Buffer Overflow
विवरणYealink T46U phone firmware `x.x.x.x` contains a stack buffer overflow vulnerability in the firmware chunk upload handler of `fcgiserver`. The vulnerable endpoint is: ```text POST /api/upgrade/upgrade ``` The handler accepts chunk upload parameters such as `uid` and `start_offset`. These values are checked as decimal strings but are not length-limited before being concatenated into a fixed-size stack path buffer with `sprintf()`. poc POST /api/upgrade/beforeupgrade?p=Upgrade&t=<timestamp> HTTP/1.1 ... POST /api/upgrade/upgrade?p=Upgrade&t=<timestamp> HTTP/1.1 Content-Type: application/x-www-form-urlencoded; charset=UTF-8 uType=chunk&phase=upload&uid=<long-numeric-string>&start_offset=0
स्रोत⚠️ http://cdn2.v50to.cc/T46U/T46U_mod_upgrade_Upgrade_chunk_stack_overflow.zip
उपयोगकर्ता
 CookedMelon (UID 52513)
सबमिशन20/05/2026 05:40 PM (4 महीनों पहले)
संयम14/06/2026 03:54 PM (25 days later)
स्थितिस्वीकृत
VulDB प्रविष्टि370864 [Yealink SIP-T46U 108.86.0.118 Firmware Chunk Upload /api/upgrade/upgrade sprintf uid/start_offset बफ़र ओवरफ़्लो]
अंक20

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