what you don't know can hurt you

Red Hat Security Advisory 2021-2405-01

Red Hat Security Advisory 2021-2405-01
Posted Jun 14, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-2405-01 - The Dynamic Host Configuration Protocol is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. The dhcp packages provide a relay agent and ISC DHCP service required to enable and administer DHCP on a network. Issues addressed include a buffer overflow vulnerability.

tags | advisory, overflow, protocol
systems | linux, redhat
advisories | CVE-2021-25217
MD5 | 7cf9277a347f3193f739de646103e6bc

Red Hat Security Advisory 2021-2405-01

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

=====================================================================
Red Hat Security Advisory

Synopsis: Important: dhcp security update
Advisory ID: RHSA-2021:2405-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2405
Issue date: 2021-06-14
CVE Names: CVE-2021-25217
=====================================================================

1. Summary:

An update for dhcp is now available for Red Hat Enterprise Linux 7.7
Extended Update Support.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) - x86_64
Red Hat Enterprise Linux Server EUS (v. 7.7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.7) - ppc64, ppc64le, s390x, x86_64

3. Description:

The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows
individual devices on an IP network to get their own network configuration
information, including an IP address, a subnet mask, and a broadcast
address. The dhcp packages provide a relay agent and ISC DHCP service
required to enable and administer DHCP on a network.

Security Fix(es):

* dhcp: stack-based buffer overflow when parsing statements with
colon-separated hex digits in config or lease files in dhcpd and dhclient
(CVE-2021-25217)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1963258 - CVE-2021-25217 dhcp: stack-based buffer overflow when parsing statements with colon-separated hex digits in config or lease files in dhcpd and dhclient

6. Package List:

Red Hat Enterprise Linux ComputeNode EUS (v. 7.7):

Source:
dhcp-4.2.5-77.el7_7.1.src.rpm

x86_64:
dhclient-4.2.5-77.el7_7.1.x86_64.rpm
dhcp-common-4.2.5-77.el7_7.1.x86_64.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.i686.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.x86_64.rpm
dhcp-libs-4.2.5-77.el7_7.1.i686.rpm
dhcp-libs-4.2.5-77.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7):

x86_64:
dhcp-4.2.5-77.el7_7.1.x86_64.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.i686.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.x86_64.rpm
dhcp-devel-4.2.5-77.el7_7.1.i686.rpm
dhcp-devel-4.2.5-77.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 7.7):

Source:
dhcp-4.2.5-77.el7_7.1.src.rpm

ppc64:
dhclient-4.2.5-77.el7_7.1.ppc64.rpm
dhcp-4.2.5-77.el7_7.1.ppc64.rpm
dhcp-common-4.2.5-77.el7_7.1.ppc64.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.ppc.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.ppc64.rpm
dhcp-libs-4.2.5-77.el7_7.1.ppc.rpm
dhcp-libs-4.2.5-77.el7_7.1.ppc64.rpm

ppc64le:
dhclient-4.2.5-77.el7_7.1.ppc64le.rpm
dhcp-4.2.5-77.el7_7.1.ppc64le.rpm
dhcp-common-4.2.5-77.el7_7.1.ppc64le.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.ppc64le.rpm
dhcp-libs-4.2.5-77.el7_7.1.ppc64le.rpm

s390x:
dhclient-4.2.5-77.el7_7.1.s390x.rpm
dhcp-4.2.5-77.el7_7.1.s390x.rpm
dhcp-common-4.2.5-77.el7_7.1.s390x.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.s390.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.s390x.rpm
dhcp-libs-4.2.5-77.el7_7.1.s390.rpm
dhcp-libs-4.2.5-77.el7_7.1.s390x.rpm

x86_64:
dhclient-4.2.5-77.el7_7.1.x86_64.rpm
dhcp-4.2.5-77.el7_7.1.x86_64.rpm
dhcp-common-4.2.5-77.el7_7.1.x86_64.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.i686.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.x86_64.rpm
dhcp-libs-4.2.5-77.el7_7.1.i686.rpm
dhcp-libs-4.2.5-77.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 7.7):

ppc64:
dhcp-debuginfo-4.2.5-77.el7_7.1.ppc.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.ppc64.rpm
dhcp-devel-4.2.5-77.el7_7.1.ppc.rpm
dhcp-devel-4.2.5-77.el7_7.1.ppc64.rpm

ppc64le:
dhcp-debuginfo-4.2.5-77.el7_7.1.ppc64le.rpm
dhcp-devel-4.2.5-77.el7_7.1.ppc64le.rpm

s390x:
dhcp-debuginfo-4.2.5-77.el7_7.1.s390.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.s390x.rpm
dhcp-devel-4.2.5-77.el7_7.1.s390.rpm
dhcp-devel-4.2.5-77.el7_7.1.s390x.rpm

x86_64:
dhcp-debuginfo-4.2.5-77.el7_7.1.i686.rpm
dhcp-debuginfo-4.2.5-77.el7_7.1.x86_64.rpm
dhcp-devel-4.2.5-77.el7_7.1.i686.rpm
dhcp-devel-4.2.5-77.el7_7.1.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2021-25217
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=jBUb
-----END PGP SIGNATURE-----

--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://listman.redhat.com/mailman/listinfo/rhsa-announce
Login or Register to add favorites

File Archive:

July 2021

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Jul 1st
    13 Files
  • 2
    Jul 2nd
    12 Files
  • 3
    Jul 3rd
    1 Files
  • 4
    Jul 4th
    2 Files
  • 5
    Jul 5th
    34 Files
  • 6
    Jul 6th
    21 Files
  • 7
    Jul 7th
    21 Files
  • 8
    Jul 8th
    13 Files
  • 9
    Jul 9th
    6 Files
  • 10
    Jul 10th
    1 Files
  • 11
    Jul 11th
    3 Files
  • 12
    Jul 12th
    15 Files
  • 13
    Jul 13th
    19 Files
  • 14
    Jul 14th
    15 Files
  • 15
    Jul 15th
    15 Files
  • 16
    Jul 16th
    9 Files
  • 17
    Jul 17th
    2 Files
  • 18
    Jul 18th
    2 Files
  • 19
    Jul 19th
    19 Files
  • 20
    Jul 20th
    21 Files
  • 21
    Jul 21st
    53 Files
  • 22
    Jul 22nd
    14 Files
  • 23
    Jul 23rd
    14 Files
  • 24
    Jul 24th
    1 Files
  • 25
    Jul 25th
    1 Files
  • 26
    Jul 26th
    21 Files
  • 27
    Jul 27th
    0 Files
  • 28
    Jul 28th
    0 Files
  • 29
    Jul 29th
    0 Files
  • 30
    Jul 30th
    0 Files
  • 31
    Jul 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close