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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
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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

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:

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