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…

PriorityP352high8.8CVSS 3.1

AVNACLPRLUINSUCHIHAH

EPSS

1.91%

77.4th percentile

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
debian	hurd	< hurd 1:0.9.git20210404-9 (sid)	hurd 1:0.9.git20210404-9 (sid)
gnu	hurd	< 0.9.20210404-9	0.9.20210404-9

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvdv2.09.0CRITICALAV:N/AC:L/Au:S/C:C/I:C/A:C

vendor_debian8.8HIGH

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.