Vulnerability Monitor

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CVE-2022-2928

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 decrement the refcount field. The function add_option() is only used in server responses to lease query packets. Each lease query response calls this function for several options, so eventually, the reference counters could overflow and cause the server to abort.

Published

2022-10-07T05:15:08.677

Last Modified

2024-11-21T07:01:56.183

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

Weaknesses
  • Type: Primary
    CWE-476
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application isc dhcp ≤ 4.4.3 Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Operating System debian debian_linux 10.0 Yes
Operating System fedoraproject fedora 35 Yes
Operating System fedoraproject fedora 36 Yes
Operating System fedoraproject fedora 37 Yes
References