VulnerabilityModified
CVE-2021-43413
A single pager port is shared among everyone who mmaps a file, allowing anyone to modify any files that they can read.
HIGH 8.8EPSS 1.97%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.97%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.97% probability · 79th percentile
- CISA KEV
- Not listed
- Affected
- gnu/hurd
- Source
- cve@mitre.org
References
- https://lists.gnu.org/archive/html/bug-hurd/2002-11/msg00263.htmlMailing List, Vendor Advisory
- https://lists.gnu.org/archive/html/bug-hurd/2005-06/msg00191.htmlMailing List, Vendor Advisory
- https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.htmlExploit, Mailing List, Vendor Advisory
- https://www.mail-archive.com/bug-hurd%40gnu.org/msg32113.html
- https://lists.gnu.org/archive/html/bug-hurd/2002-11/msg00263.htmlMailing List, Vendor Advisory
- https://lists.gnu.org/archive/html/bug-hurd/2005-06/msg00191.htmlMailing List, Vendor Advisory
- https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.htmlExploit, Mailing List, Vendor Advisory
- https://www.mail-archive.com/bug-hurd%40gnu.org/msg32113.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.