ISC DHCP <4.4.3 / 4.1-ESV-R16-P1 Mem Exhaustion via Long FQDN Labels
CVE-2022-2929 Published on October 7, 2022
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.
Vulnerability Analysis
Attack Vector:
ADJACENT_NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH
Products Associated with CVE-2022-2929
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Affected Versions
ISC DHCP:- Version 1.0 through versions before 4.1-ESV-R16-P2 is affected.
- Version 4.2 through versions before 4.4.3.-P1 is affected.
Exploit Probability
EPSS
0.05%
Percentile
16.62%
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.