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.
References
Configurations
History
21 Nov 2024, 03:10
| Type | Values Removed | Values Added |
|---|---|---|
| References | () http://git.savannah.gnu.org/cgit/wget.git/commit/?id=ba6b44f6745b14dce414761a8e4b35d31b176bba - Issue Tracking, Patch, Third Party Advisory | |
| References | () http://www.debian.org/security/2017/dsa-4008 - Issue Tracking, Third Party Advisory | |
| References | () http://www.securityfocus.com/bid/101590 - Issue Tracking, Third Party Advisory, VDB Entry | |
| References | () http://www.securitytracker.com/id/1039661 - Issue Tracking, Third Party Advisory, VDB Entry | |
| References | () https://access.redhat.com/errata/RHSA-2017:3075 - | |
| References | () https://security.gentoo.org/glsa/201711-06 - Issue Tracking, Third Party Advisory | |
| References | () https://www.synology.com/support/security/Synology_SA_17_62_Wget - | |
| References | () https://www.viestintavirasto.fi/en/cybersecurity/vulnerabilities/2017/haavoittuvuus-2017-037.html - Issue Tracking, Patch, Third Party Advisory |
Information
Published : 2017-10-27 19:29
Updated : 2024-11-21 03:10
NVD link : CVE-2017-13090
Mitre link : CVE-2017-13090
CVE.ORG link : CVE-2017-13090
JSON object : View
Products Affected
debian
- debian_linux
gnu
- wget