Ubuntu: Security Advisory (USN-4715-1)

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...

A flaw was found in dnsmasq before 2.83. A buffer overflow vulnerability was discovered in the way dnsmasq extract names from DNS packets before validating them with DNSSEC data. An attacker on the network who can create valid DNS replies could use this flaw to cause an overflow with arbitrary data in a heap-allocated memory possibly executing code on the machine. The flaw is in the rfc1035.c:extract_name() function which writes data to the memory pointed by name assuming MAXDNAME*2 bytes are available in the buffer. However in some code execution paths it is possible extract_name() gets passed an offset from the base buffer thus reducing in practice the number of available bytes that can be written in the buffer. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

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A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. A remote attacker who can create valid DNS replies could use this flaw to cause an overflow in a heap-allocated memory. This flaw is caused by the lack of length checks in rfc1035.c:extract_name() which could be abused to make the code execute memcpy() with a negative size in get_rdata() and cause a crash in dnsmasq resulting in a denial of service. The highest threat from this vulnerability is to system availability.

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January 21, 2021-KB4598296 (OS Build 17763.1728) Preview

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DEBIAN-CVE-2020-25682

A flaw was found in dnsmasq before 2.83. A buffer overflow vulnerability was discovered in the way dnsmasq extract names from DNS packets before validating them with DNSSEC data. An attacker on the network, who can create valid DNS replies, could use this flaw to cause an overflow with arbitrary...

ALPINE-CVE-2020-25682

A flaw was found in dnsmasq before 2.83. A buffer overflow vulnerability was discovered in the way dnsmasq extract names from DNS packets before validating them with DNSSEC data. An attacker on the network, who can create valid DNS replies, could use this flaw to cause an overflow with arbitrary...

dnsmasq: buffer overflow in extract_name() due to missing length check when DNSSEC is enabled

A flaw was found in dnsmasq. A buffer overflow vulnerability was discovered in the way dnsmasq extract names from DNS packets before validating them with DNSSEC data. An attacker on the network, who can create valid DNS replies, could use this flaw to cause an overflow with arbitrary data in a...

dnsmasq: heap-based buffer overflow with large memcpy in get_rdata() when DNSSEC is enabled

A flaw was found in dnsmasq. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. A remote attacker, who can create valid DNS replies, could use this flaw to cause an overflow in a heap-allocated memory. This flaw is cause...

dnsmasq: heap-based buffer overflow with large memcpy in sort_rrset() when DNSSEC is enabled

A flaw was found in dnsmasq. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. This flaw allows a remote attacker, who can create valid DNS replies, to cause an overflow in a heap-allocated memory. This flaw is caused b...

dnsmasq: heap-based buffer overflow with large memcpy in sort_rrset() when DNSSEC is enabled

A flaw was found in dnsmasq. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. This flaw allows a remote attacker, who can create valid DNS replies, to cause an overflow in a heap-allocated memory. This flaw is caused b...

dnsmasq: heap-based buffer overflow with large memcpy in sort_rrset() when DNSSEC is enabled

A flaw was found in dnsmasq. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. This flaw allows a remote attacker, who can create valid DNS replies, to cause an overflow in a heap-allocated memory. This flaw is caused b...

dnsmasq: heap-based buffer overflow with large memcpy in get_rdata() when DNSSEC is enabled

A flaw was found in dnsmasq. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. A remote attacker, who can create valid DNS replies, could use this flaw to cause an overflow in a heap-allocated memory. This flaw is cause...

UBUNTU-CVE-2020-25682

A flaw was found in dnsmasq before 2.83. A buffer overflow vulnerability was discovered in the way dnsmasq extract names from DNS packets before validating them with DNSSEC data. An attacker on the network, who can create valid DNS replies, could use this flaw to cause an overflow with arbitrary...

PT-2021-3538

Name of the Vulnerable Software and Affected Versions dnsmasq versions prior to 2.83 Description A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled. This issue is caused by the lack of length checks in the extract name function, which could be abused to make the code...

PT-2021-3818

Name of the Vulnerable Software and Affected Versions dnsmasq versions prior to 2.83 Description A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. This flaw allows a remote attacker, who can create valid DNS replies, to...

PT-2021-2209

Name of the Vulnerable Software and Affected Versions dnsmasq versions prior to 2.83 Description A buffer overflow vulnerability was discovered in the way dnsmasq extracts names from DNS packets before validating them with DNSSEC data. An attacker on the network, who can create valid DNS replies,...

PT-2021-27632

Name of the Vulnerable Software and Affected Versions: No specific software or versions are mentioned in the provided description. Description: The issue is related to a heap-use-after-free READ 4 crash type. The crash state involves several functions: yr re ast extract literal, yr parser write...

Seat Reservation System 1.0 - Unauthenticated SQL Injection

Title: Seat Reservation System 1.0 - Unauthenticated SQL Injection Exploit Author: Rahul Ramkumar Date: 2020-09-16 Vendor Homepage: www.sourcecodester.com Software Link: https://www.sourcecodester.com/sites/default/files/download/oretnom23/seat-reservation-system-using-php0.zip Version: 1.0 Teste...

CVE-2007-4559

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PT-2020-16188

Name of the Vulnerable Software and Affected Versions SourceCodester Seat Reservation System version 1.0 Description The issue concerns a lack of input validation on the username and password parameters in the admin class.php file. This allows an attacker to send malicious input in the POST reque...