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Fencer Intel
high 7.2

CVE-2013-1813 json

util-linux/mdev.c in BusyBox before 1.21.0 uses 0777 permissions for parent directories when creating nested directories under /dev/, which…

published 12y ago modified 4mo ago also EUVD-2013-1833

cvss
7.2
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

util-linux/mdev.c in BusyBox before 1.21.0 uses 0777 permissions for parent directories when creating nested directories under /dev/, which allows local users to have unknown impact and attack vectors.

Patch / fix

  • busybox busybox 1.21.0
  • busybox Debian 14, Debian 13, Debian 12 1:1.20.0-8

debian advisories DEBIAN-CVE-2013-1813

  • busybox RHEL 6 1:1.15.1-20.el6
  • busybox-petitboot RHEL 6 1:1.15.1-20.el6

red hat advisories RHSA-2013:1732

Is CVE-2013-1813 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-1813 updated cvss 3.6

busybox: insecure directory permissions in /dev

  • Red Hat Enterprise Linux Desktop (v. 6) busybox 1.15.1-20.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) busybox 1.15.1-20.el6, busybox-petitboot 1.15.1-20.el6 Red Hat Enterprise Linux HPC Node (v. 6) busybox 1.15.1-20.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) busybox 1.15.1-20.el6, busybox-petitboot 1.15.1-20.el6 Red Hat Enterprise Linux Server (v. 6) busybox 1.15.1-20.el6 Red Hat Enterprise Linux Server Optional (v. 6) busybox 1.15.1-20.el6, busybox-petitboot 1.15.1-20.el6
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) busybox 1.15.1-20.el6 Red Hat Enterprise Linux Workstation Optional (v. 6) busybox 1.15.1-20.el6, busybox-petitboot 1.15.1-20.el6
    fixed: vendor fix RHSA-2013:1732
  • Red Hat Enterprise Linux 5 busybox
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.62% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • git.busybox.net http://git.busybox.net/busybox/commit/?id=4609f477c7e043a4f6147dfe6e86b775da2ef784 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Consolidate version ranges.