Vulnerability fixed in DHCP

A vulnerability has been fixed in DHCP. The vulnerability allows a remote malicious party to cause a denial-of-service. cause. ISC has released updates to fix the vulnerability. More information can be found on the page below: https://kb.isc.org/docs/cve-2021-25217 -= Ubuntu =- Canonical has made...

Ubuntu: Security Advisory (USN-4969-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

ISC DHCP < 4.4.2-P1 DoS

The ISC DHCP server installed on the remote host is prior to 4.4.2-P1. It is, therefore, vulnerable to a a buffer overwrite possible when parsing hexadecimal literals with more than 1024 octets. An attacker could exploit this to cause the DHCP server to crash. Note that Nessus has not tested for...

USN-4969-2: DHCP vulnerability

USN-4969-1 fixed a vulnerability in DHCP. This update provides the corresponding update for Ubuntu 14.04 ESM and 16.04 ESM. Original advisory details: Jon Franklin and Pawel Wieczorkiewicz discovered that DHCP incorrectly handled lease file parsing. A remote attacker could possibly use this issue...

Ubuntu 18.04 LTS / 20.04 LTS : DHCP vulnerability (USN-4969-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4969-1 advisory. Jon Franklin and Pawel Wieczorkiewicz discovered that DHCP incorrectly handled lease file parsing. A remote attacker could possibly use this issue to...

CVE-2021-25217

In ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16, ISC DHCP 4.4.0 - 4.4.2 Other branches of ISC DHCP i.e., releases in the 4.0.x series or lower and releases in the 4.3.x series are beyond their End-of-Life EOL and no longer supported by ISC. From inspection it is clear that the defect is also present in...

CVE-2021-25217

In ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16, ISC DHCP 4.4.0 - 4.4.2 Other branches of ISC DHCP i.e., releases in the 4.0.x series or lower and releases in the 4.3.x series are beyond their End-of-Life EOL and no longer supported by ISC. From inspection it is clear that the defect is also present in...

AZL-6372 CVE-2021-25217 affecting package dhcp for versions less than 4.4.2-4

In ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16, ISC DHCP 4.4.0 - 4.4.2 Other branches of ISC DHCP i.e., releases in the 4.0.x series or lower and releases in the 4.3.x series are beyond their End-of-Life EOL and no longer supported by ISC. From inspection it is clear that the defect is also present in...

Input validation

In ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16, ISC DHCP 4.4.0 - 4.4.2 Other branches of ISC DHCP i.e., releases in the 4.0.x series or lower and releases in the 4.3.x series are beyond their End-of-Life EOL and no longer supported by ISC. From inspection it is clear that the defect is also present in...

CVE-2021-25217 A buffer overrun in lease file parsing code can be used to exploit a common vulnerability shared by dhcpd and dhclient

In ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16, ISC DHCP 4.4.0 - 4.4.2 Other branches of ISC DHCP i.e., releases in the 4.0.x series or lower and releases in the 4.3.x series are beyond their End-of-Life EOL and no longer supported by ISC. From inspection it is clear that the defect is also present in...

CVE-2021-25217

CVE-2021-25217 affects ISC DHCP (DHCP client/server) across multiple branches (notably 4.1-ESV-R16, 4.4.0–4.4.2; other 4.0/4.3 may be affected but untested). The vulnerability is a stack-based buffer overrun in parsing statements with colon-separated hex digits in config or lease files, potential...

CVE-2021-25217

In ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16, ISC DHCP 4.4.0 - 4.4.2 Other branches of ISC DHCP i.e., releases in the 4.0.x series or lower and releases in the 4.3.x series are beyond their End-of-Life EOL and no longer supported by ISC. From inspection it is clear that the defect is also present in...

CVE-2021-25217

In ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16, ISC DHCP 4.4.0 - 4.4.2 Other branches of ISC DHCP i.e., releases in the 4.0.x series or lower and releases in the 4.3.x series are beyond their End-of-Life EOL and no longer supported by ISC. From inspection it is clear that the defect is also present in...

CVE-2021-25217

In ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16, ISC DHCP 4.4.0 - 4.4.2 Other branches of ISC DHCP i.e., releases in the 4.0.x series or lower and releases in the 4.3.x series are beyond their End-of-Life EOL and no longer supported by ISC. From inspection it is clear that the defect is also present in...

isc-dhcp -- remotely exploitable vulnerability

Michael McNally reports: Program code used by the ISC DHCP package to read and parse stored leases has a defect that can be exploited by an attacker to cause one of several undesirable outcomes...

ISC BIND 9.5.0 < 9.11.31 / 9.11.3-S1 < 9.11.31-S1 / 9.12.0 < 9.16.15 / 9.16.8-S1 < 9.16.15-S1 / 9.17.0 <-> 9.17.1 Buffer Overflow (CVE-2021-25216)

The version of ISC BIND installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2021-25216 advisory. - In BIND 9.5.0 - 9.11.29, 9.12.0 - 9.16.13, and versions BIND 9.11.3-S1 - 9.11.29-S1 and 9.16.8-S1 - 9.16.13-S1 of BIND...

ISC BIND 9.8.5 < 9.11.31 / 9.9.3 < 9.11.31 / 9.9.3-S1 < 9.11.31-S1 / 9.12.0 < 9.16.15 / 9.16.8-S1 < 9.16.15-S1 / 9.17.0 < 9.17.12 Assertion Failure (CVE-2021-25214)

The version of ISC BIND installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2021-25214 advisory. - In BIND 9.8.5 - 9.8.8, 9.9.3 - 9.11.29, 9.12.0 - 9.16.13, and versions BIND 9.9.3-S1 - 9.11.29-S1 and 9.16.8-S1 - 9.16.13-...

ISC BIND TKEY Query Out-Of-Bounds Read Information Disclosure Vulnerability

This vulnerability allows remote attackers to disclose sensitive information on affected installations of ISC BIND. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of TKEY queries. The issue results from the lack of proper validation of...

ISC BIND DNAME Recursion DoS (CVE-2021-25215)

According to its self-reported version, the ISC Bind present on the remote host is affected by a denial of service vulnerability: - DNAME records, described in RFC 6672, provide a way to redirect a subtree of the domain name tree in the DNS. A flaw in the way named processes these records may...

ISC BIND DoS Vulnerability (CVE-2021-25215) - Windows

ISC BIND is prone to a denial of service DoS vulnerability. Copyright C 2021 Greenbone Networks GmbH 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-or-later This program is free software; y...