Strix
26.1K

CVE-2021-43413

HIGHCVSS 8.8/10EPSS 1.91%

Last modified

CVE-2021-43413 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered in GNU Hurd before 0.9 20210404-9. A single pager port is shared among everyone who mmaps a file, allowing anyone to modify any files that they can read. EPSS estimates a 1.91% chance of exploitation in the next 30 days.

Description

An issue was discovered in GNU Hurd before 0.9 20210404-9. A single pager port is shared among everyone who mmaps a file, allowing anyone to modify any files that they can read. This can be trivially exploited to get full root access.

Metrics

CVSS 3.1
8.8/10

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

EPSS Probability
1.91%

77.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
GnuHurd< 0.9.20210404-9

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-43413?
An issue was discovered in GNU Hurd before 0.9 20210404-9. A single pager port is shared among everyone who mmaps a file, allowing anyone to modify any files that they can read. This can be trivially exploited to get full root access.
How severe is CVE-2021-43413?
CVE-2021-43413 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.91% probability of exploitation in the next 30 days.
How do I fix CVE-2021-43413?
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-2021-43413?

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

Scan your code now

Source: NVD / NIST