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...

CVE-2022-2928: NULL Pointer Dereference

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-2022-2929: Allocation of Resources Without Limits or Throttling

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...

Debian: Security Advisory (DSA-5251-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2022 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

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...

[SECURITY] [DSA 5251-1] isc-dhcp security update

------------------------------------------------------------------------- Debian Security Advisory DSA-5251-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso October 06, 2022 https://www.debian.org/security/faq -...

DSA-5251-1 isc-dhcp - security update

Bulletin has no description...

Ubuntu: Security Advisory (USN-5658-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

USN-5658-1: DHCP vulnerabilities

It was discovered that DHCP incorrectly handled option reference counting. A remote attacker could possibly use this issue to cause DHCP servers to crash, resulting in a denial of service. CVE-2022-2928 It was discovered that DHCP incorrectly handled certain memory operations. A remote attacker...

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...