Security update for dhcp

Announcement ID: SUSE-SU-2021:14740-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2021-25217 ( SUSE ): 7.4 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
  • CVE-2021-25217 ( NVD ): 7.4 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Affected Products:
  • SUSE Linux Enterprise Point of Service 11 SP3
  • SUSE Linux Enterprise Server 11 SP4
  • SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4

An update that solves one vulnerability can now be installed.

Description:

This update for dhcp fixes the following issues:

  • CVE-2021-25217: A buffer overrun in lease file parsing code can be used to exploit a common vulnerability shared by dhcpd and dhclient (bsc#1186382)

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Point of Service 11 SP3
    zypper in -t patch sleposp3-dhcp-14740=1
  • SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4
    zypper in -t patch slessp4-dhcp-14740=1
  • SUSE Linux Enterprise Server 11 SP4
    zypper in -t patch slessp4-dhcp-14740=1

Package List:

  • SUSE Linux Enterprise Point of Service 11 SP3 (i586)
    • dhcp-4.2.4.P2-0.28.12.1
    • dhcp-server-4.2.4.P2-0.28.12.1
    • dhcp-client-4.2.4.P2-0.28.12.1
    • dhcp-relay-4.2.4.P2-0.28.12.1
  • SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (ppc64 s390x x86_64 i586)
    • dhcp-4.2.4.P2-0.28.12.1
    • dhcp-server-4.2.4.P2-0.28.12.1
    • dhcp-client-4.2.4.P2-0.28.12.1
    • dhcp-relay-4.2.4.P2-0.28.12.1
  • SUSE Linux Enterprise Server 11 SP4 (ppc64 s390x x86_64 i586)
    • dhcp-4.2.4.P2-0.28.12.1
    • dhcp-server-4.2.4.P2-0.28.12.1
    • dhcp-client-4.2.4.P2-0.28.12.1
    • dhcp-relay-4.2.4.P2-0.28.12.1

References: