ISC DHCP Denial of Service Vulnerability

ISC DHCP is an open source Dynamic Host Configuration Protocol server software from ISC. A denial of service vulnerability exists in ISC DHCP, which stems from the fact that when the function optioncodehashlookup is called from addoption, it increases the option's refcount field, but does not mak...

ISC DHCP Buffer Overflow Vulnerability

ISC DHCP is a set of open source Dynamic Host Configuration Protocol server software from ISC. ISC DHCP has a buffer overflow vulnerability that stems from the lack of validation of the DHCP server's system for the length of DHCP packets tagged with fqdn, which can be exploited by attackers to...

Debian dla-3146 : isc-dhcp-client - security update

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3146 advisory. - ----------------------------------------------------------------------- Debian LTS Advisory DLA-3146-1 [email protected]...

DLA-3146-1 isc-dhcp - security update

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[SECURITY] [DLA 3146-1] isc-dhcp security update

----------------------------------------------------------------------- Debian LTS Advisory DLA-3146-1 [email protected] https://www.debian.org/lts/security/ Utkarsh Gupta October 11, 2022 https://wiki.debian.org/LTS -...

CVE-2022-2929

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...

CVE-2022-2929

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...

CVE-2022-2928

In ISC DHCP 4.4.0 - 4.4.3, ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16-P1, when the function optioncodehashlookup is called from addoption, it increases the option's refcount field. However, there is not a corresponding call to optiondereference to decrement the refcount field. The function addoption is on...

CVE-2022-2928

In ISC DHCP 4.4.0 - 4.4.3, ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16-P1, when the function optioncodehashlookup is called from addoption, it increases the option's refcount field. However, there is not a corresponding call to optiondereference to decrement the refcount field. The function addoption is on...

Code injection

In ISC DHCP 4.4.0 - 4.4.3, ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16-P1, when the function optioncodehashlookup is called from addoption, it increases the option's refcount field. However, there is not a corresponding call to optiondereference to decrement the refcount field. The function addoption is on...

Design/Logic Flaw

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...

CVE-2022-2929

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...

CVE-2022-2929

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...

CVE-2022-2929 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...

CVE-2022-2929

CVE-2022-2929 affects ISC DHCP server components in multiple releases (ISC DHCP 1.0–4.4.3 and 4.1-ESV-R1–4.1-ESV-R16-P1). The issue arises when a DHCP server processes packets with fqdn labels longer than 63 bytes, leading to memory exhaustion on the server. Connected documents corroborate the ro...

CVE-2022-2928

In ISC DHCP 4.4.0 - 4.4.3, ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16-P1, when the function optioncodehashlookup is called from addoption, it increases the option's refcount field. However, there is not a corresponding call to optiondereference to decrement the refcount field. The function addoption is on...

CVE-2022-2928 An option refcount overflow exists in dhcpd

In ISC DHCP 4.4.0 - 4.4.3, ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16-P1, when the function optioncodehashlookup is called from addoption, it increases the option's refcount field. However, there is not a corresponding call to optiondereference to decrement the refcount field. The function addoption is on...

CVE-2022-2928

CVE-2022-2928 affects ISC DHCP (versions including 4.4.0–4.4.3 and 4.1-ESV-R1–4.1-ESV-R16-P1). Root cause: option_code_hash_lookup() increments an option’s refcount in add_option() without a corresponding option_dereference(), and add_option() is invoked for multiple options in lease query respon...

CVE-2022-2928

In ISC DHCP 4.4.0 - 4.4.3, ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16-P1, when the function optioncodehashlookup is called from addoption, it increases the option's refcount field. However, there is not a corresponding call to optiondereference to decrement the refcount field. The function addoption is on...

Debian DSA-5251-1 : isc-dhcp - security update

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5251 advisory. Several vulnerabilities have been discovered in the ISC DHCP client, relay and server. CVE-2022-2928 It was discovered that the DHCP server does not correctly...