CVE-2017-1000365

HIGHCVSS 7.8/10EPSS 0.90%

Last modified

CVE-2017-1000365 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The Linux Kernel imposes a size restriction on the arguments and environmental strings passed through RLIMIT_STACK/RLIM_INFINITY (1/4 of the size), but does not take the argument and environment pointers into account, which allows attackers to bypass this limitation. This affects Linux Kernel versions 4.11.5 and earlier. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

The Linux Kernel imposes a size restriction on the arguments and environmental strings passed through RLIMIT_STACK/RLIM_INFINITY (1/4 of the size), but does not take the argument and environment pointers into account, which allows attackers to bypass this limitation. This affects Linux Kernel versions 4.11.5 and earlier. It appears that this feature was introduced in the Linux Kernel version 2.6.23.

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
0.90%

55.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
LinuxLinux Kernel>= 2.6.23, < 3.2.91
LinuxLinux Kernel>= 3.3, < 3.10.108
LinuxLinux Kernel>= 3.11, < 3.16.46
LinuxLinux Kernel>= 3.17, < 3.18.59
LinuxLinux Kernel>= 3.19, < 4.1.43
LinuxLinux Kernel>= 4.2, < 4.4.75
LinuxLinux Kernel>= 4.5, < 4.9.35
LinuxLinux Kernel>= 4.10, < 4.11.8

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-1000365?
The Linux Kernel imposes a size restriction on the arguments and environmental strings passed through RLIMIT_STACK/RLIM_INFINITY (1/4 of the size), but does not take the argument and environment pointers into account, which allows attackers to bypass this limitation. This affects Linux Kernel versions 4.11.5 and earlier. It appears that this feature was introduced in the Linux Kernel version 2.6.23.
How severe is CVE-2017-1000365?
CVE-2017-1000365 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.
How do I fix CVE-2017-1000365?
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-2017-1000365?

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

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Source: NVD / NIST