[Bug-wget] [PATCH] ftp: fix invalid pointer dereference in getftp()

[Cong Ma]

In ftp.c, the return value of ftp_response() is not checked before using
the pointer respline.  Subsequent call ftp_expected_bytes (respline)
will possibly dereference the uninitialized pointer, thereby crashing
wget.

This patch moves the dereference of respline after the return-value
check, which should fix the crash.

The problem has been reported against Fedora's wget package[1].

Thanks for reviewing and best wishes,

Cong.


[1] https://bugzilla.redhat.com/show_bug.cgi?id=1169022

0001-ftp-fix-invalid-pointer-dereference-in-getftp.patch
Description: Text document