CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
68.3%
Debian LTS Advisory DLA-2674-1 [email protected]
https://www.debian.org/lts/security/ Emilio Pozuelo Monfort
June 03, 2021 https://wiki.debian.org/LTS
Package : isc-dhcp
Version : 4.3.5-3+deb9u2
CVE ID : CVE-2021-25217
Debian Bug : 989157
Jon Franklin and Pawel Wieczorkiewicz found an issue in the ISC DHCP
client and server when parsing lease information, which could lead to
denial of service via application crash.
For Debian 9 stretch, this problem has been fixed in version
4.3.5-3+deb9u2.
We recommend that you upgrade your isc-dhcp packages.
For the detailed security status of isc-dhcp please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/isc-dhcp
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
68.3%