Twenty Year Anniversary

Debian Security Advisory 4134-1

Debian Security Advisory 4134-1
Posted Mar 10, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4134-1 - Bjorn Bosselmann discovered that the umount bash completion from util-linux does not properly handle embedded shell commands in a mountpoint name. An attacker with rights to mount filesystems can take advantage of this flaw for privilege escalation if a user (in particular root) is tricked into using the umount completion while a specially crafted mount is present.

tags | advisory, shell, root, bash
systems | linux, debian
advisories | CVE-2018-7738
MD5 | 739295b248b871432986dbfe7125e245

Debian Security Advisory 4134-1

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

- -------------------------------------------------------------------------
Debian Security Advisory DSA-4134-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
March 10, 2018 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : util-linux
CVE ID : CVE-2018-7738
Debian Bug : 892179

Bjorn Bosselmann discovered that the umount bash completion from
util-linux does not properly handle embedded shell commands in a
mountpoint name. An attacker with rights to mount filesystems can take
advantage of this flaw for privilege escalation if a user (in particular
root) is tricked into using the umount completion while a specially
crafted mount is present.

For the stable distribution (stretch), this problem has been fixed in
version 2.29.2-1+deb9u1.

We recommend that you upgrade your util-linux packages.

For the detailed security status of util-linux please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/util-linux

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
-----BEGIN PGP SIGNATURE-----
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=ne8E
-----END PGP SIGNATURE-----

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

September 2018

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Sep 1st
    1 Files
  • 2
    Sep 2nd
    3 Files
  • 3
    Sep 3rd
    15 Files
  • 4
    Sep 4th
    15 Files
  • 5
    Sep 5th
    18 Files
  • 6
    Sep 6th
    18 Files
  • 7
    Sep 7th
    15 Files
  • 8
    Sep 8th
    2 Files
  • 9
    Sep 9th
    2 Files
  • 10
    Sep 10th
    16 Files
  • 11
    Sep 11th
    17 Files
  • 12
    Sep 12th
    15 Files
  • 13
    Sep 13th
    29 Files
  • 14
    Sep 14th
    21 Files
  • 15
    Sep 15th
    3 Files
  • 16
    Sep 16th
    1 Files
  • 17
    Sep 17th
    15 Files
  • 18
    Sep 18th
    16 Files
  • 19
    Sep 19th
    29 Files
  • 20
    Sep 20th
    0 Files
  • 21
    Sep 21st
    0 Files
  • 22
    Sep 22nd
    0 Files
  • 23
    Sep 23rd
    0 Files
  • 24
    Sep 24th
    0 Files
  • 25
    Sep 25th
    0 Files
  • 26
    Sep 26th
    0 Files
  • 27
    Sep 27th
    0 Files
  • 28
    Sep 28th
    0 Files
  • 29
    Sep 29th
    0 Files
  • 30
    Sep 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2018 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close