CVE-2017-1000370

HIGHCVSS 7.8/10EPSS 2.25%

Last modified

CVE-2017-1000370 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 2.25% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
2.25%

80.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
LinuxLinux Kernel>= 4.1, < 4.1.43
LinuxLinux Kernel>= 4.2, < 4.4.78
LinuxLinux Kernel>= 4.5, < 4.9.39
LinuxLinux Kernel>= 4.10, < 4.11.12
LinuxLinux Kernel>= 4.12, < 4.12.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-1000370?
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.
How severe is CVE-2017-1000370?
CVE-2017-1000370 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 2.25% probability of exploitation in the next 30 days.
How do I fix CVE-2017-1000370?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-1000370?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST