oss-sec mailing list archives
Re: screen crash processing combining characters
From: Tavis Ormandy <taviso () gmail com>
Date: Tue, 9 Feb 2021 18:11:37 -0000 (UTC)
On 2021-02-09, Harry Sintonen wrote:
On Tue, 9 Feb 2021, Tavis Ormandy wrote:Hello, I noticed someone posted this to the screen-devel list. I can reproduce it here, just catting the testcase does crash my screen session. https://lists.gnu.org/archive/html/screen-devel/2021-02/msg00000.htmlI managed to reproduce this against screen + irssi. It was a bit tricky to get it triggered but eventually screen did die.
welp, I minimized it a bit and it crashed xterm too. I minimized it to 772 characters: $ wc -m input.txt 772 input.txt Here is the minimized version (gzipped and base64 encoded to avoid crashing anything anybody's mail client). $ gzip -9c < input.txt | base64 H4sIAD7OImACA02W61IiQQyFX10WpkdZF5QFF4TVWbkoKpcZVuQyMM/iD99DTPM1p4qiTp1O0klO OvDp3Mf3p/gsio+4ZqB9+D4ybm+gJ8y7gesTEyffwG2EiQ3ci9fGwOLERAsDffGaGYiFiQx0JE6O TZk4SwOZePmjW/F6MZAK4yO/ideVAani2JZ/wpwZOBMvqyIuhHkyUDkyriRHXUDJjoLXOyASY+v8 3gnTImf0igriwBzb8io5Nw2MyWcoR3PA1EBZ1EkN5GJsKhdbYTpoGm7/YeBScm7S1T1MRg8HeFWs UumhuwDcAcJkmtyuivEf8fLzox0b0I2EozLqbC3OCuMZ/dnB1CVyDHglsu/Pi9wVUu1RYELkcORn Yy2Rn+3S/8JcERB1Ij/zN3LXFr3GMI8GErE5N9CE2RD5r9j4V6m3twBv2Pj3VZPZ2DO0QfcbA12J 7BW8E8bvjQl9Hsilv7CZACygzacxD4CUQRqJe8MAUrowCQdQZyA98yz5FGySDu5N5jDU1ebtRHhV AHVsJlyxgumicninGVO3wX3MZI643XdM1oVL2S1hP484eiB53425ePWR2yHTBCY8qyXTkhI5533l yH3BFvXlhL0RhOtjc9iQJfLJ2VGMsTfe70SdMOENbPz0NkQd/4iepC5qjzsw57Qu6JWRD5XGbZIP PRwaCAukTM6J5LxArwSmxLYJHXN0w/GIlhj/BqzYkFu8PDOVugYoWGPBZjTzDuAv/SlvOeLSUPsQ Y0bUrQ084tU7lRORz3GBzFlxGe4t8WInxGu8qsw8izGuMhJlNm1KOSHDW+6ih+7SwFK6ERK7ZoEs sLE4Lvw92InXPerk5DNlfixDJz8K0ZxGxSg484P6Be3RyjwMCQAA To reproduce in XTerm, decode the file then try to select the line. I'll send a report to Thomas Dickey. Tavis. -- _o) $ lynx lock.cmpxchg8b.com /\\ _o) _o) $ finger taviso () sdf org _\_V _( ) _( ) @taviso
Current thread:
- screen crash processing combining characters Tavis Ormandy (Feb 09)
- Re: screen crash processing combining characters Tavis Ormandy (Feb 09)
- Re: screen crash processing combining characters Harry Sintonen (Feb 09)
- Re: screen crash processing combining characters Tavis Ormandy (Feb 09)
- Re: screen crash processing combining characters Tavis Ormandy (Feb 09)
- Re: Re: screen crash processing combining characters Utkarsh Gupta (Feb 10)
- Re: Re: screen crash processing combining characters Salvatore Bonaccorso (Feb 10)
- Re: screen crash processing combining characters Tavis Ormandy (Feb 09)
- Re: screen crash processing combining characters Utkarsh Gupta (Feb 09)