CVE-2022-2928
Severity
6.5MEDIUM
EPSS
0.0%
top 85.04%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedOct 7
Latest updateNov 21
Description
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 s…
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6
Affected Packages4 packages
▶CVEListV5isc/isc_dhcp4.1 ESV 4.1-ESV-R1 through versions before 4.1-ESV-R16-P1, 4.4.0 through versions before 4.4.3-P1+1
Also affects: Debian Linux 10.0, Fedora 35, 36, 37