FreeSWITCHに脆弱性2件、修正版1.11.2が公開
Summary
FreeSWITCHに、プロセスを落として全通話を切る脆弱性と、通話の媒体経路を乗っ取られる脆弱性が公表されました。IP電話やWebRTCの基盤で使っている組織は、1.11.2へ更新し、ICEの検証設定も有効にしてください。
AI summary
Produced by SecPulse using an external AI model; it may contain mistakes. Check the original description and references below before acting on it.
FreeSWITCHに、プロセスを落として全通話を切る脆弱性と、通話の媒体経路を乗っ取られる脆弱性が公表されました。IP電話やWebRTCの基盤で使っている組織は、1.11.2へ更新し、ICEの検証設定も有効にしてください。
Original description The description as published by the source.
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to 1.11.2, ws_read_frame() decoded a WebSocket frame's 64-bit extended payload length with a 32-bit byte swap and narrowed the result into a signed length. A value whose surviving low word became negative bypassed the signed size check and was reinterpreted as an enormous unsigned count, causing client bytes to overwrite memory beyond the 64 KiB receive buffer. Any client completing a /socket WebSocket upgrade on an enabled mod_xml_rpc endpoint reached the parser before HTTP authentication; both the module and WebSocket endpoint are disabled by default. The heap overwrite can corrupt connection pointers and crash FreeSWITCH, ending every concurrent session, although remote code execution has not been demonstrated. This issue is fixed in version 1.11.2.
Source: CVE.org (CVE Program・cvelistV5) NVD