Package: advancecomp
Version: 2.0-1
Severity: normal

Dear Maintainer,

Running 'advmng -l' with the attached file raises a NULL pointer
dereference, which may allow a denial-of-service attack of a malicious
attacker.

I expected the program to terminate without segfault, but the program
crashes as follow.

----------------------------
(gdb) r -l poc
Starting program: /usr/bin/advmng -l poc

Program received signal SIGSEGV, Segmentation fault.
0x000055555556037f in ?? ()
(gdb) x/i $rip
=> 0x55555556037f:  movzwl 0x0(%rbp),%r13d
(gdb) i r rbp
rbp            0x0  0x0
-----------------------------

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

-- System Information:
Debian Release: 9.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'testing'), (500, 'stable')
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.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages advancecomp depends on:
ii  libc6       2.24-11+deb9u1
ii  libgcc1     1:6.3.0-18
ii  libstdc++6  6.3.0-18
ii  zlib1g      1:1.2.8.dfsg-5

advancecomp recommends no packages.

advancecomp suggests no packages.

-- no debconf information

Attachment: poc
Description: video/mng

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