CVE-2017-1000370

HIGH

Description

The offset2lib patch as used in the Linux Kernel contains a vulnerability that allows a PIE binary to be execve()'ed with 1GB of arguments or environmental strings then the stack occupies the address 0x80000000 and the PIE binary is mapped above 0x40000000 nullifying the protection of the offset2lib patch. This affects Linux Kernel version 4.11.5 and earlier. This is a different issue than CVE-2017-1000371. This issue appears to be limited to i386 based systems.

References

http://www.debian.org/security/2017/dsa-3981

http://www.securityfocus.com/bid/99149

https://access.redhat.com/security/cve/CVE-2017-1000370

https://www.exploit-db.com/exploits/42273/

https://www.exploit-db.com/exploits/42274/

https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt

Details

Source: MITRE

Published: 2017-06-19

Updated: 2019-10-03

Risk Information

CVSS v2.0

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH