- Issued:
- 2021-06-14
- Updated:
- 2021-06-14
RHSA-2021:2419 - Security Advisory
Synopsis
Important: dhcp security update
Type/Severity
Security Advisory: Important
Red Hat Insights patch analysis
Identify and remediate systems affected by this advisory.
Topic
An update for dhcp is now available for Red Hat Enterprise Linux 6 Extended Lifecycle 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.
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:
Affected Products
- Red Hat Enterprise Linux Server 6 x86_64
- Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
- Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
- Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
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
Red Hat Enterprise Linux Server 6
SRPM | |
---|---|
dhcp-4.1.1-64.P1.el6_10.src.rpm | SHA-256: c6727fedaeaf986162d30a268ef865a60b6fd8f01039e2c3699fb7925eae382c |
x86_64 | |
dhclient-4.1.1-64.P1.el6_10.x86_64.rpm | SHA-256: e4f899a2ec7a3b0286981f8b34e92d8a7cab2dd96bc2ce7e0f109141fe94c45a |
dhcp-4.1.1-64.P1.el6_10.x86_64.rpm | SHA-256: f6163e8ed1dd99d076505a9440238dd09ade6a2fb055e39805d33e72eb7c58bd |
dhcp-common-4.1.1-64.P1.el6_10.x86_64.rpm | SHA-256: 395c391a6236c93f8aadb3e82e5648740a35d403450be9dbf1ad9d4e3f425479 |
dhcp-debuginfo-4.1.1-64.P1.el6_10.x86_64.rpm | SHA-256: 0b5baeaf4d52edca69c188a6c1bd760c09a75945ccb86111090d62797d928a84 |
dhcp-devel-4.1.1-64.P1.el6_10.i686.rpm | SHA-256: dbafbfbfd686e628709ee63c98e947c20c9afb830bf22f291c44088d4a8fcc74 |
dhcp-devel-4.1.1-64.P1.el6_10.x86_64.rpm | SHA-256: db671480a97eb6e7e06c3096f0852ac1dd54b14b9e8926304339b05dbde74812 |
Red Hat Enterprise Linux Server - Extended Life Cycle Support 6
SRPM | |
---|---|
dhcp-4.1.1-64.P1.el6_10.src.rpm | SHA-256: c6727fedaeaf986162d30a268ef865a60b6fd8f01039e2c3699fb7925eae382c |
x86_64 | |
dhclient-4.1.1-64.P1.el6_10.x86_64.rpm | SHA-256: e4f899a2ec7a3b0286981f8b34e92d8a7cab2dd96bc2ce7e0f109141fe94c45a |
dhcp-4.1.1-64.P1.el6_10.x86_64.rpm | SHA-256: f6163e8ed1dd99d076505a9440238dd09ade6a2fb055e39805d33e72eb7c58bd |
dhcp-common-4.1.1-64.P1.el6_10.x86_64.rpm | SHA-256: 395c391a6236c93f8aadb3e82e5648740a35d403450be9dbf1ad9d4e3f425479 |
dhcp-debuginfo-4.1.1-64.P1.el6_10.i686.rpm | SHA-256: da4a3f6acb3801a1261b040cbdf782e22f4118a7192d3964dea648032a43c70f |
dhcp-debuginfo-4.1.1-64.P1.el6_10.x86_64.rpm | SHA-256: 0b5baeaf4d52edca69c188a6c1bd760c09a75945ccb86111090d62797d928a84 |
dhcp-debuginfo-4.1.1-64.P1.el6_10.x86_64.rpm | SHA-256: 0b5baeaf4d52edca69c188a6c1bd760c09a75945ccb86111090d62797d928a84 |
dhcp-devel-4.1.1-64.P1.el6_10.i686.rpm | SHA-256: dbafbfbfd686e628709ee63c98e947c20c9afb830bf22f291c44088d4a8fcc74 |
dhcp-devel-4.1.1-64.P1.el6_10.x86_64.rpm | SHA-256: db671480a97eb6e7e06c3096f0852ac1dd54b14b9e8926304339b05dbde74812 |
i386 | |
dhclient-4.1.1-64.P1.el6_10.i686.rpm | SHA-256: 9e6e2deb94d53d560bda9978de7bf453d7cd6bf15c9d66d0bdbf4a321fe75f1e |
dhcp-4.1.1-64.P1.el6_10.i686.rpm | SHA-256: e32c0539858976e0a338e3d427b28e7dab1a61a78ac4cd7a909c2656f3e2f92f |
dhcp-common-4.1.1-64.P1.el6_10.i686.rpm | SHA-256: e72b9706d007cf818712bb352b87648e7efbcb28ec1f19b881df2f1f190db812 |
dhcp-debuginfo-4.1.1-64.P1.el6_10.i686.rpm | SHA-256: da4a3f6acb3801a1261b040cbdf782e22f4118a7192d3964dea648032a43c70f |
dhcp-debuginfo-4.1.1-64.P1.el6_10.i686.rpm | SHA-256: da4a3f6acb3801a1261b040cbdf782e22f4118a7192d3964dea648032a43c70f |
dhcp-devel-4.1.1-64.P1.el6_10.i686.rpm | SHA-256: dbafbfbfd686e628709ee63c98e947c20c9afb830bf22f291c44088d4a8fcc74 |
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6
SRPM | |
---|---|
dhcp-4.1.1-64.P1.el6_10.src.rpm | SHA-256: c6727fedaeaf986162d30a268ef865a60b6fd8f01039e2c3699fb7925eae382c |
s390x | |
dhclient-4.1.1-64.P1.el6_10.s390x.rpm | SHA-256: 7dbbe985851efda74fc865cff21378732f37929dc55e83947da9ea9c8e9556fe |
dhcp-4.1.1-64.P1.el6_10.s390x.rpm | SHA-256: 2f75fd9fd6283478e906049052e7519f7d7ff2e61dab450fd9d03c8c5b64a601 |
dhcp-common-4.1.1-64.P1.el6_10.s390x.rpm | SHA-256: e77dd9a67bcee243ea755f2420a0f696aa13a67a67d3e525dc4e3a8fda23e986 |
dhcp-debuginfo-4.1.1-64.P1.el6_10.s390.rpm | SHA-256: 2fbc4e338fb84c5df20378e016022ad7d3ca071d1f9eff347c0ca94504eb32cc |
dhcp-debuginfo-4.1.1-64.P1.el6_10.s390x.rpm | SHA-256: fe460255489ddce99851849649e88178ba2bcaf9a07156256ea6f04d9b819be7 |
dhcp-debuginfo-4.1.1-64.P1.el6_10.s390x.rpm | SHA-256: fe460255489ddce99851849649e88178ba2bcaf9a07156256ea6f04d9b819be7 |
dhcp-devel-4.1.1-64.P1.el6_10.s390.rpm | SHA-256: 17974397ac8ba2a62ab0217afd4f031cd0db69faa21d6bdb4967e236e93da807 |
dhcp-devel-4.1.1-64.P1.el6_10.s390x.rpm | SHA-256: 4bc44dbc93238715658249e133674f7a25c0419ba269108f95132c3eb71a64ac |
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