概要
SIP の文字メッセージを送られ、OS のコマンドを実行されるおそれ。
元の説明（英語）を読む
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 1.11.3, sofia_presence_handle_sip_i_message() split the To user of an inbound SIP MESSAGE on a plus sign and treated the left side as a chat protocol selector. Selecting the api chat proto reached switch_api_execute(), allowing a peer whose MESSAGE was accepted to run FreeSWITCH API commands, including operating-system command sinks, with the daemon's privileges. Inbound chat is enabled on the stock internal and external profiles, and any authenticated profile account is sufficient; stock directory users without password material can also remove that barrier in affected configurations. The flaw permits configuration and credential disclosure, arbitrary call control, and command execution, and exploitation has been observed in the wild. This issue is fixed in version 1.11.3.
影響を受ける人
1.11.3 より前の FreeSWITCH の管理者
対策
- FreeSWITCH を 1.11.3 以降に更新する
国内の動き
本文に同じ CVE 番号のある国内の注意喚起・報道は、まだ無い。
海外の動き
- CISA（注意喚起）↗11/9
- The Hacker News（報道）↗11/10
PoC
リンクだけを載せる。中身は確かめていない。