CVE-2022-2928: An option refcount overflow exists in dhcpd
ISC · ISC DHCP
Vendor fix available · Affected: ISC DHCP · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 54% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- ISC · ISC DHCP4.4.0 through versions before 4.4.3-P1; 4.1 ESV 4.1-ESV-R1 through versions before 4.1-ESV-R16-P1
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- ISC
- Published
- October 2022
CoverageNo articles yet
No CyberSIXT article names CVE-2022-2928 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.