CVE-2021-25217

dhcp-libs: The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get t...

CVE-2021-25217 is fixed in 11 products on 1 platform, first by isc-dhcp-client 4.3.5-3ubuntu7.3, released May 25, 2021. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
8.8
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0612
93rd percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
dhcp-client · RHEL 8 12:4.3.6-44.el8_4.1 RHSA-2021:2359 Jun 9, 2021
dhcp-client · ol 8 12:4.3.6-44.el8_4.1 ELSA-2021-2359 Jun 10, 2021
dhcp-common · RHEL 8 12:4.3.6-44.el8_4.1 RHSA-2021:2359 Jun 9, 2021
dhcp-common · ol 8 12:4.3.6-44.el8_4.1 ELSA-2021-2359 Jun 10, 2021
dhcp-libs · RHEL 8 12:4.3.6-44.el8_4.1 RHSA-2021:2359 Jun 9, 2021
dhcp-libs · ol 8 12:4.3.6-44.el8_4.1 ELSA-2021-2359 Jun 10, 2021
dhcp-relay · RHEL 8 12:4.3.6-44.el8_4.1 RHSA-2021:2359 Jun 9, 2021
dhcp-relay · ol 8 12:4.3.6-44.el8_4.1 ELSA-2021-2359 Jun 10, 2021
dhcp-server · RHEL 8 12:4.3.6-44.el8_4.1 RHSA-2021:2359 Jun 9, 2021
dhcp-server · ol 8 12:4.3.6-44.el8_4.1 ELSA-2021-2359 Jun 10, 2021
isc-dhcp-client · Ubuntu 18.04.6 LTS (bionic) 4.3.5-3ubuntu7.3 isc-dhcp-client 4.3.5-3ubuntu7.3 May 25, 2021
isc-dhcp-client · Ubuntu 20.04 LTS (focal) 4.4.1-2.1ubuntu5.20.04.2 isc-dhcp-client 4.4.1-2.1ubuntu5.20.04.2 May 25, 2021
isc-dhcp-client-ddns · Ubuntu 18.04.6 LTS (bionic) 4.3.5-3ubuntu7.3 isc-dhcp-client-ddns 4.3.5-3ubuntu7.3 May 25, 2021
isc-dhcp-client-ddns · Ubuntu 20.04 LTS (focal) 4.4.1-2.1ubuntu5.20.04.2 isc-dhcp-client-ddns 4.4.1-2.1ubuntu5.20.04.2 May 25, 2021
isc-dhcp-common · Ubuntu 18.04.6 LTS (bionic) 4.3.5-3ubuntu7.3 isc-dhcp-common 4.3.5-3ubuntu7.3 May 25, 2021
isc-dhcp-common · Ubuntu 20.04 LTS (focal) 4.4.1-2.1ubuntu5.20.04.2 isc-dhcp-common 4.4.1-2.1ubuntu5.20.04.2 May 25, 2021
isc-dhcp-relay · Ubuntu 18.04.6 LTS (bionic) 4.3.5-3ubuntu7.3 isc-dhcp-relay 4.3.5-3ubuntu7.3 May 25, 2021
isc-dhcp-relay · Ubuntu 20.04 LTS (focal) 4.4.1-2.1ubuntu5.20.04.2 isc-dhcp-relay 4.4.1-2.1ubuntu5.20.04.2 May 25, 2021
isc-dhcp-server · Ubuntu 18.04.6 LTS (bionic) 4.3.5-3ubuntu7.3 isc-dhcp-server 4.3.5-3ubuntu7.3 May 25, 2021
isc-dhcp-server · Ubuntu 20.04 LTS (focal) 4.4.1-2.1ubuntu5.20.04.2 isc-dhcp-server 4.4.1-2.1ubuntu5.20.04.2 May 25, 2021
isc-dhcp-server-ldap · Ubuntu 18.04.6 LTS (bionic) 4.3.5-3ubuntu7.3 isc-dhcp-server-ldap 4.3.5-3ubuntu7.3 May 25, 2021
isc-dhcp-server-ldap · Ubuntu 20.04 LTS (focal) 4.4.1-2.1ubuntu5.20.04.2 isc-dhcp-server-ldap 4.4.1-2.1ubuntu5.20.04.2 May 25, 2021