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Bug#881019: marked as done (ffmpeg2theora: null pointer dereference while running ffmpeg2theora with "poc" option)

Your message dated Wed, 29 Nov 2023 18:47:19 +0000
with message-id <[🔎] E1r8Pah-0038Mz-Iw@fasolo.debian.org>
and subject line Bug#1055019: Removed package(s) from unstable
has caused the Debian Bug report #881019,
regarding ffmpeg2theora: null pointer dereference while running ffmpeg2theora with "poc" option
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
881019: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=881019
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: ffmpeg2theora
Version: 0.30-1+b2
Severity: normal
Tags: security

null pointer dereference while running ffmpeg2theora with "poc" option

Running 'ffmpeg2theora poc' with the attached file raises null pointer dereference
which may allow a remote attack to cause a denial-of-service attack
I expected the program to terminate without segfault, but the program crashes as follow

-------------------------------------------

june@yuweol:~/poc/ffmpeg2theora/crash1$ ffmpeg2theora poc
[lrc @ 0x558a4a3b6840] Format lrc detected only with low score of 5, misdetection possible!
Input #0, lrc, from 'poc':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Subtitle: text
Segmentation fault

-------------------------------------------

Program received signal SIGSEGV, Segmentation fault.
0x0000555555565b8f in ?? ()
(gdb) bt
#0  0x0000555555565b8f in ?? ()
#1  0x000055555555c8da in main ()
(gdb) x/i $rip
=> 0x555555565b8f:  mov    0x8(%rax),%rdi
(gdb) i r rax
rax            0x0  0

-------------------------------------------

This bug was found with a fuzzer developed by 'SoftSec' group at KAIST.

-- System Information:
Debian Release: buster/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'stable-updates'), (500, 'testing'), (500, 'stable'), (1, 'experimental-debug')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-3-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages ffmpeg2theora depends on:
ii  libavcodec57    7:3.3.4-2+b2
ii  libavdevice57   7:3.3.4-2+b2
ii  libavfilter6    7:3.3.4-2+b2
ii  libavformat57   7:3.3.4-2+b2
ii  libavutil55     7:3.3.4-2+b2
ii  libc6           2.24-17
ii  libkate1        0.4.1-7+b1
ii  libogg0         1.3.2-1+b1
ii  liboggkate1     0.4.1-7+b1
ii  libpostproc54   7:3.3.4-2+b2
ii  libswresample2  7:3.3.4-2+b2
ii  libswscale4     7:3.3.4-2+b2
ii  libtheora0      1.1.1+dfsg.1-14+b1
ii  libvorbis0a     1.3.5-4
ii  libvorbisenc2   1.3.5-4

ffmpeg2theora recommends no packages.

ffmpeg2theora suggests no packages.

-- no debconf information

Attachment: poc
Description: Binary data


--- End Message ---
--- Begin Message --- 
Version: 0.30-2+rm

Dear submitter,

as the package ffmpeg2theora has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/1055019

The version of this package that was in Debian prior to this removal
can still be found using https://snapshot.debian.org/.

Please note that the changes have been done on the master archive and
will not propagate to any mirrors until the next dinstall run at the
earliest.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmaster@ftp-master.debian.org.

Debian distribution maintenance software
pp.
Thorsten Alteholz (the ftpmaster behind the curtain)

--- End Message ---
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