Wind River Support Network

HomeDefectsLIN10-2396
Fixed

LIN10-2396 : Security Advisory - wget - CVE-2017-13090

Created: Oct 29, 2017    Updated: Dec 3, 2018
Resolved Date: Mar 1, 2018
Found In Version: 10.17.41.1
Fix Version: 10.17.41.5
Severity: Standard
Applicable for: Wind River Linux LTS 17
Component/s: Userspace

Description

The retr.c:fd_read_body() function is called when processing OK responses. When the response is sent chunked in wget before 1.19.2, the chunk parser uses strtol() to read each chunk's length, but doesn't check that the chunk length is a non-negative number. The code then tries to read the chunk in pieces of 8192 bytes by using the MIN() macro, but ends up passing the negative chunk length to retr.c:fd_read(). As fd_read() takes an int argument, the high 32 bits of the chunk length are discarded, leaving fd_read() with a completely attacker controlled length argument. The attacker can corrupt malloc metadata after the allocated buffer.

https://nvd.nist.gov/vuln/detail/CVE-2017-13090

Other Downloads


Live chat
Online