oss-sec mailing list archives

Heap overflow and DoS in unzip 6.0

From: Gustavo Grieco <gustavo.grieco () gmail com>
Date: Mon, 7 Sep 2015 08:57:20 -0300

Hello,

Two issues were found in unzip 6.0:

* A heap overflow triggered by unzipping a file with password (e.g unzip -p
-P x sigsegv.zip)
* A denegation of service with a file that never finishes unzipping (e.g.
unzip sigxcpu.zip).

Upstream is notified. Nevertheless the test cases as well as the valgrind
and the adress sanitizer reports of the heap overflow case are attached (as
a single file) in case someone wants to provide some feedback. These issues
were found with QuickFuzz.

Regards,
Gustavo.

Attachment: report.txt
Description:

Attachment: sigsegv.zip
Description:

Attachment: sigxcpu.zip
Description:

Current thread:

Heap overflow and DoS in unzip 6.0 Gustavo Grieco (Sep 07)
- Re: Heap overflow and DoS in unzip 6.0 Stefan Cornelius (Sep 15)
  - Re: Heap overflow and DoS in unzip 6.0 Gustavo Grieco (Sep 15)
    - Re: Heap overflow and DoS in unzip 6.0 Hanno Böck (Sep 15)
    - Re: Heap overflow and DoS in unzip 6.0 Gustavo Grieco (Sep 15)
    - Re: Heap overflow and DoS in unzip 6.0 Mark Felder (Sep 17)
    - Re: Heap overflow and DoS in unzip 6.0 Stefan Cornelius (Sep 21)