PT-2021-23840 · Gnu · Gnu Hurd

Sergey Bugaev · Published 2021-11-07 · Updated 2021-11-09 · CVE-2021-43413

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions GNU Hurd versions prior to 0.9 20210404-9

Description An issue was discovered that allows anyone to modify any files they can read, potentially leading to full root access. This is because a single pager port is shared among all users who mmap a file.

Recommendations For GNU Hurd versions prior to 0.9 20210404-9, update to version 0.9 20210404-9 or later to resolve the issue.

Exploit

Fix

Related Identifiers

CVE-2021-43413

Affected Products

Gnu Hurd

References · 6

• 🔥 https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html · Exploit
• https://lists.gnu.org/archive/html/bug-hurd/2005-06/msg00191.html · Vendor Advisory
• https://lists.gnu.org/archive/html/bug-hurd/2002-11/msg00263.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-43413 · Security Note
• https://osv.dev/vulnerability/CVE-2021-43413 · Vendor Advisory
• https://mail-archive.com/bug-hurd%40gnu.org/msg32113.html · Note