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OpenAdvisories
Medium ELSA-2023-3000 2 CVEs

Moderate: dhcp security and bug fix update (Oracle Linux 8)

Published May 24, 2023 · Updated May 24, 2023

Ecosystem: Oracle Linux

Summary

[12:4.3.6-49]
- Fix for CVE-2022-2928
- Fix for CVE-2022-2929
- send back dhcp6.vendor-opts again (#2142024)

Fixed packages 5

ReleasePackageFixed in
Oracle Linux · 8 dhcp-client 12:4.3.6-49.el8
Oracle Linux · 8 dhcp-common 12:4.3.6-49.el8
Oracle Linux · 8 dhcp-libs 12:4.3.6-49.el8
Oracle Linux · 8 dhcp-relay 12:4.3.6-49.el8
Oracle Linux · 8 dhcp-server 12:4.3.6-49.el8

Vulnerabilities 2

  • Medium 6.5
    CVE-2022-2928

    An option refcount overflow exists in dhcpd

    In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However, there is not a corresponding call to option_dereference() to decreme…

    ISC ISC DHCP isc-dhcp isc-dhcp Debian Ubuntu Alpine
  • Medium 6.5
    CVE-2022-2929

    DHCP memory leak

    In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server, sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the server to run out of memory.

    ISC ISC DHCP isc-dhcp isc-dhcp Debian Ubuntu Alpine