URL:
<http://savannah.gnu.org/bugs/?44884>
Summary: wget crash with empty --header
Project: GNU Wget
Submitted by: glen
Submitted on: Mon 20 Apr 2015 06:02:49 PM GMT
Category: None
Severity: 3 - Normal
Priority: 5 - Normal
Status: None
Privacy: Public
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 1.16.3
Operating System: GNU/Linux
Reproducibility: Every Time
Fixed Release: None
Planned Release: None
Regression: None
Work Required: None
Patch Included: None
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Details:
$ wget --header 'Content-Type:text/plain;charset=UTF-8' --header ''
https://google.com
Segmentation fault
note, that this one does not crash:
$ wget --header '' https://google.com
--2015-04-20 20:51:11-- https://google.com/
so the first valid header is neccessary
looks like double-free, the trace is incomplete, but you'll get the idea:
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff68ad874 in free () from /lib64/libc.so.6
(gdb) bt
#0 0x00007ffff68ad874 in free () from /lib64/libc.so.6
#1 0x0000000000430719 in ?? ()
#2 0x0000000000421f98 in ?? ()
#3 0x0000000000422bff in ?? ()
#4 0x0000000000405f77 in ?? ()
#5 0x00007ffff68528a0 in __libc_start_main () from /lib64/libc.so.6
#6 0x00000000004072a9 in ?? ()
(gdb)
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