Bug#861058: hydra: on resume, children die with "double free or corruption"

[krylov.r00t@gmail.com (Ivan Krylov)]

Package: hydra
Version: 8.0-1
Severity: important

Dear Maintainer,

When launching an example attack on a router:

    hydra -v -f -o found -e nsr -x '1:10:aA1!@#$%^&*()_+=-":;,./?><}{[]'\\\' -l admin http-get://192.168.1.1 -m /

then interrupting and resuming with `hydra -R`, all children immediately
die with 'double free or corruption'. It might be relevant that the output
file contains wrong command line argument: "-x 1" instead of what had been
passed.

-- System Information:
Debian Release: 8.7
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable'), (90, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.8.0-0.bpo.2-amd64 (SMP w/4 CPU cores)
Locale: LANG=ru_RU.utf8, LC_CTYPE=ru_RU.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages hydra depends on:
ii  libapr1           1.5.1-3
ii  libaprutil1       1.5.4-1
ii  libc6             2.19-18+deb8u7
ii  libfbclient2      2.5.3.26778.ds4-5+deb8u1
ii  libidn11          1.33-1
ii  libmysqlclient18  5.5.54-0+deb8u1
ii  libncurses5       5.9+20140913-1+b1
ii  libpcre3          2:8.35-3.3+deb8u4
ii  libpq5            9.4.10-0+deb8u1
ii  libssh-4          0.6.3-4+deb8u2
ii  libssl1.0.0       1.0.1t-1+deb8u6
ii  libsvn1           1.8.10-6+deb8u4
ii  libtinfo5         5.9+20140913-1+b1

Versions of packages hydra recommends:
ii  curl  7.38.0-4+deb8u5
ii  wget  1.16-1+deb8u1

Versions of packages hydra suggests:
pn  hydra-gtk  <none>

-- no debconf information