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Red Hat Product Errata RHSA-2021:2414 - Security Advisory
Issued:
2021-06-14
Updated:
2021-06-14

RHSA-2021:2414 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: dhcp security update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for dhcp is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions.

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.

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.

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

Affected Products

  • Red Hat Enterprise Linux Server - AUS 7.4 x86_64
  • Red Hat Enterprise Linux Server - TUS 7.4 x86_64
  • Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 7.4 ppc64le
  • Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.4 x86_64

Fixes

  • BZ - 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

CVEs

  • CVE-2021-25217

References

  • https://access.redhat.com/security/updates/classification/#important
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux Server - AUS 7.4

SRPM
dhcp-4.2.5-58.el7_4.5.src.rpm SHA-256: 765da13b4f5817d84018ea49552188931aa4bbf184860a120d5aab087385e71c
x86_64
dhclient-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: 85201268c41a38986dc11b5d65bfb850d71aa6c43a13b7621d6aa6ef6c820656
dhcp-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: ce837b7f6c6a2b4059cad8a7be565f042864e21702dd4d505e45688546ef56ac
dhcp-common-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: 5d28c6df4d84ea4622b6e1a52c20b48be3e71b9f72eefe194d0466b1a3e115cf
dhcp-debuginfo-4.2.5-58.el7_4.5.i686.rpm SHA-256: 92014fd11b0d3d9be3892b087501240f465e83e5f49359ae84a90d719e4a4e6b
dhcp-debuginfo-4.2.5-58.el7_4.5.i686.rpm SHA-256: 92014fd11b0d3d9be3892b087501240f465e83e5f49359ae84a90d719e4a4e6b
dhcp-debuginfo-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: a30a4b9e791d887351010844ec022031b3400e29dd0853c65b7f73d0f7f2f943
dhcp-debuginfo-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: a30a4b9e791d887351010844ec022031b3400e29dd0853c65b7f73d0f7f2f943
dhcp-devel-4.2.5-58.el7_4.5.i686.rpm SHA-256: b5f768f8af455a5752cedabf27c54d28710e9025d3dac92d18f397e8df91ce63
dhcp-devel-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: 4e525dab591d4108ef1be1ae05756c7eb2cf00e11b0e5211d28c79c2583e5e7b
dhcp-libs-4.2.5-58.el7_4.5.i686.rpm SHA-256: 514d2cbb603db65a5b171ccfee1e2e66e9bfd916ed47045716b8b71487cdecb5
dhcp-libs-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: 7270473182b8fd1ca96c56544643003b7b4173878ab23121e3e4f62f7a442e99

Red Hat Enterprise Linux Server - TUS 7.4

SRPM
dhcp-4.2.5-58.el7_4.5.src.rpm SHA-256: 765da13b4f5817d84018ea49552188931aa4bbf184860a120d5aab087385e71c
x86_64
dhclient-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: 85201268c41a38986dc11b5d65bfb850d71aa6c43a13b7621d6aa6ef6c820656
dhcp-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: ce837b7f6c6a2b4059cad8a7be565f042864e21702dd4d505e45688546ef56ac
dhcp-common-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: 5d28c6df4d84ea4622b6e1a52c20b48be3e71b9f72eefe194d0466b1a3e115cf
dhcp-debuginfo-4.2.5-58.el7_4.5.i686.rpm SHA-256: 92014fd11b0d3d9be3892b087501240f465e83e5f49359ae84a90d719e4a4e6b
dhcp-debuginfo-4.2.5-58.el7_4.5.i686.rpm SHA-256: 92014fd11b0d3d9be3892b087501240f465e83e5f49359ae84a90d719e4a4e6b
dhcp-debuginfo-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: a30a4b9e791d887351010844ec022031b3400e29dd0853c65b7f73d0f7f2f943
dhcp-debuginfo-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: a30a4b9e791d887351010844ec022031b3400e29dd0853c65b7f73d0f7f2f943
dhcp-devel-4.2.5-58.el7_4.5.i686.rpm SHA-256: b5f768f8af455a5752cedabf27c54d28710e9025d3dac92d18f397e8df91ce63
dhcp-devel-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: 4e525dab591d4108ef1be1ae05756c7eb2cf00e11b0e5211d28c79c2583e5e7b
dhcp-libs-4.2.5-58.el7_4.5.i686.rpm SHA-256: 514d2cbb603db65a5b171ccfee1e2e66e9bfd916ed47045716b8b71487cdecb5
dhcp-libs-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: 7270473182b8fd1ca96c56544643003b7b4173878ab23121e3e4f62f7a442e99

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 7.4

SRPM
dhcp-4.2.5-58.el7_4.5.src.rpm SHA-256: 765da13b4f5817d84018ea49552188931aa4bbf184860a120d5aab087385e71c
ppc64le
dhclient-4.2.5-58.el7_4.5.ppc64le.rpm SHA-256: c270f2a765b550a2f13d54f1f4eb85a3f8be27df3fead570854919b2558b5fc3
dhcp-4.2.5-58.el7_4.5.ppc64le.rpm SHA-256: a2fd6960f7025a167b96824dba54e41f95196bc2da68ab841ce476d26a3b5e49
dhcp-common-4.2.5-58.el7_4.5.ppc64le.rpm SHA-256: 08f9971c6f94dfb2061f5a1027f4e8413bd1c9eccc1cd13e7d71531706b11f3c
dhcp-debuginfo-4.2.5-58.el7_4.5.ppc64le.rpm SHA-256: 15d0c9b4e15586706dfe635432903494287f32c391f34d889ec2dd61695ed147
dhcp-debuginfo-4.2.5-58.el7_4.5.ppc64le.rpm SHA-256: 15d0c9b4e15586706dfe635432903494287f32c391f34d889ec2dd61695ed147
dhcp-devel-4.2.5-58.el7_4.5.ppc64le.rpm SHA-256: 57d2e9ed3b93a7038c61cfcfa3baff17fc5b289625db7cee33ea304b3cfeede3
dhcp-libs-4.2.5-58.el7_4.5.ppc64le.rpm SHA-256: fd2c15b5fcb48995aac26602968cbc605abeb3546256bcef673342ea36d36f5d

Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.4

SRPM
dhcp-4.2.5-58.el7_4.5.src.rpm SHA-256: 765da13b4f5817d84018ea49552188931aa4bbf184860a120d5aab087385e71c
x86_64
dhclient-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: 85201268c41a38986dc11b5d65bfb850d71aa6c43a13b7621d6aa6ef6c820656
dhcp-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: ce837b7f6c6a2b4059cad8a7be565f042864e21702dd4d505e45688546ef56ac
dhcp-common-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: 5d28c6df4d84ea4622b6e1a52c20b48be3e71b9f72eefe194d0466b1a3e115cf
dhcp-debuginfo-4.2.5-58.el7_4.5.i686.rpm SHA-256: 92014fd11b0d3d9be3892b087501240f465e83e5f49359ae84a90d719e4a4e6b
dhcp-debuginfo-4.2.5-58.el7_4.5.i686.rpm SHA-256: 92014fd11b0d3d9be3892b087501240f465e83e5f49359ae84a90d719e4a4e6b
dhcp-debuginfo-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: a30a4b9e791d887351010844ec022031b3400e29dd0853c65b7f73d0f7f2f943
dhcp-debuginfo-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: a30a4b9e791d887351010844ec022031b3400e29dd0853c65b7f73d0f7f2f943
dhcp-devel-4.2.5-58.el7_4.5.i686.rpm SHA-256: b5f768f8af455a5752cedabf27c54d28710e9025d3dac92d18f397e8df91ce63
dhcp-devel-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: 4e525dab591d4108ef1be1ae05756c7eb2cf00e11b0e5211d28c79c2583e5e7b
dhcp-libs-4.2.5-58.el7_4.5.i686.rpm SHA-256: 514d2cbb603db65a5b171ccfee1e2e66e9bfd916ed47045716b8b71487cdecb5
dhcp-libs-4.2.5-58.el7_4.5.x86_64.rpm SHA-256: 7270473182b8fd1ca96c56544643003b7b4173878ab23121e3e4f62f7a442e99

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

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