Package: ufraw-batch
Version: 0.22-1.1
Severity: normal

Dear Maintainer,

Running 'ufraw-batch --conf' 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 --conf poc
Starting program: /usr/bin/ufraw-batch --conf poc
[Thread debugging using libthread_db enabled]
Using host libthread_db library
"/lib/x86_64-linux-gnu/libthread_db.so.1".
Error parsing 'poc'
Error on line 1 char 1: Document must begin with an element (e.g.
<book>)

Program received signal SIGSEGV, Segmentation fault.
strlen () at ../sysdeps/x86_64/strlen.S:106
106 ../sysdeps/x86_64/strlen.S: No such file or directory.
(gdb) x/i $rip
=> 0x7ffff5456646 <strlen+38>:  movdqu (%rax),%xmm4
(gdb) i r rax
rax            0x0  0
-----------------------------

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, '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 ufraw-batch depends on:
ii  libbz2-1.0       1.0.6-8.1
ii  libc6            2.24-11+deb9u1
ii  libexiv2-14      0.25-3.1
ii  libgcc1          1:6.3.0-18
ii  libglib2.0-0     2.50.3-2
ii  libgomp1         6.3.0-18
ii  libjpeg62-turbo  1:1.5.1-2
ii  liblcms2-2       2.8-4
ii  liblensfun1      0.3.2-3
ii  libpng16-16      1.6.28-1
ii  libstdc++6       6.3.0-18
ii  libtiff5         4.0.8-2+deb9u1
ii  zlib1g           1:1.2.8.dfsg-5

ufraw-batch recommends no packages.

Versions of packages ufraw-batch suggests:
pn  ufraw  <none>

-- no debconf information

Attachment: poc
Description: video/mng

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