CVE-2017-1000371
HighThe offset2lib patch as used by the Linux Kernel contains a vulnerability, if RLIMIT_STACK is set to RLIM_INFINITY and 1 Gigabyte of memory is allocated (the maximum under the 1/4 restriction) then the stack will be grown down to 0x80000000, and as the PIE binary is mapped above 0x80000000 the minimum distance between the end of the PIE binary's read-write segment and the start of the stack becomes small enough that the stack guard page can be jumped over by an attacker. This affects Linux Kernel version 4.11.5. This is a different issue than CVE-2017-1000370 and CVE-2017-1000365. This issue appears to be limited to i386 based systems.
CVSS 3.1 score
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
The following references provide additional information about CVE-2017-1000371 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
Debian Securityhttp://www.debian.org/security/2017/dsa-3981Third Party Advisory
-
Securityfocushttp://www.securityfocus.com/bid/99131Third Party Advisory VDB Entry
-
Third Party Advisory VDB Entry
-
Exploit-DBhttps://www.exploit-db.com/exploits/42273/Third Party Advisory VDB Entry
-
Exploit-DBhttps://www.exploit-db.com/exploits/42276/Third Party Advisory VDB Entry
-
Third Party Advisory
Frequently asked questions
-
What is CVE-2017-1000371?
CVE-2017-1000371 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2017-1000371 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
What is the CVSS score for CVE-2017-1000371?
CVE-2017-1000371 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. -
Is there a patch available for CVE-2017-1000371?
No patch is currently available for CVE-2017-1000371. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
-
Is CVE-2017-1000371 actively exploited?
No — CVE-2017-1000371 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.