EulerOS Virtualization 3.0.6.6 : dnsmasq (EulerOS-SA-2021-1469)

According to the versions of the dnsmasq packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - A flaw was found in dnsmasq. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with...

Security update for bind (important)

openSUSE Security Update: Security update for bind Announcement ID: openSUSE-SU-2021:0386-1 Rating: important References: 1180933 Affected Products: openSUSE Leap 15.2 An update that contains security fixes can now be installed. Description: This update for bind fixes the following issues: -...

EulerOS Virtualization for ARM 64 3.0.6.0 : dnsmasq (EulerOS-SA-2021-1551)

According to the versions of the dnsmasq packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - A flaw was found in the default configuration of dnsmasq, as shipped with Fedora and Red Hat Enterprise Linux, where ...

SUSE SLED15 / SLES15 Security Update : bind (SUSE-SU-2021:0689-1)

This update for bind fixes the following issues : dnssec-keygen can no longer generate HMAC keys. Use tsig-keygen instead. bsc1180933 Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically...

SUSE-SU-2021:0689-1 Security update for bind

This update for bind fixes the following issues: - dnssec-keygen can no longer generate HMAC keys. Use tsig-keygen instead. bsc1180933...

EulerOS 2.0 SP2 : dnsmasq (EulerOS-SA-2021-1288)

According to the versions of the dnsmasq packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating wit...

EulerOS 2.0 SP3 : dnsmasq (EulerOS-SA-2021-1374)

According to the versions of the dnsmasq packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating wit...

EulerOS 2.0 SP9 : dnsmasq (EulerOS-SA-2021-1263)

According to the versions of the dnsmasq package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with...

EulerOS 2.0 SP9 : dnsmasq (EulerOS-SA-2021-1244)

According to the versions of the dnsmasq package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with...

EulerOS 2.0 SP8 : dnsmasq (EulerOS-SA-2021-1138)

According to the versions of the dnsmasq packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq checks in the forward.c:replyquery if the...

Updated dnsmasq packages fix security vulnerability

Multiples vulnerabilities have been discovered in dnsmasq up to version 2.82: - subtle errors in dnsmasq's protections against cache-poisoning attacks CVE-2020-25684, CVE-2020-25685 and CVE-2020-25686 - buffer overflow in dnsmasq's DNSSEC code CVE-2020-25681, CVE-2020-25682, CVE-2020-25683 and...

MGASA-2021-0059 Updated dnsmasq packages fix security vulnerability

Multiples vulnerabilities have been discovered in dnsmasq up to version 2.82: - subtle errors in dnsmasq's protections against cache-poisoning attacks CVE-2020-25684, CVE-2020-25685 and CVE-2020-25686 - buffer overflow in dnsmasq's DNSSEC code CVE-2020-25681, CVE-2020-25682, CVE-2020-25683 and...

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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CentOS 8 : dnsmasq (CESA-2021:0150)

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2021:0150 advisory. - dnsmasq: heap-based buffer overflow in sortrrset when DNSSEC is enabled CVE-2020-25681 - dnsmasq: buffer overflow in extractname due to missing lengt...

Dnsmasq Buffer Overflow Vulnerability (CNVD-2021-07538)

Dnsmasq is a lightweight DNS forwarding and DHCP, TFTP server written in C. It can be used as a server to forward DNS, DHCP, and TFTP. Dnsmasq suffers from a buffer overflow vulnerability that stems from a buffer overflow vulnerability in the way dnsmasq extracts names from DNS packets before...

Enhanced Security at the Edge with Imperva DNS Protection

Your website is the gateway to your business and the potential for disruption of your site or damage to your web infrastructure makes DNS security a serious consideration for organizations. The criticality of DNS Services for ensuring network connectivity and website availability make them a hot...

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. 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 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 sort_rrset() 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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openSUSE Security Update : dnsmasq (openSUSE-2021-124)

This update for dnsmasq fixes the following issues : - bsc1177077: Fixed DNSpooq vulnerabilities - CVE-2020-25684, CVE-2020-25685, CVE-2020-25686: Fixed multiple Cache Poisoning attacks. - CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25687: Fixed multiple potential Heap-based overflow...

openSUSE Security Update : dnsmasq (openSUSE-2021-129)

This update for dnsmasq fixes the following issues : - bsc1177077: Fixed DNSpooq vulnerabilities - CVE-2020-25684, CVE-2020-25685, CVE-2020-25686: Fixed multiple Cache Poisoning attacks. - CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25687: Fixed multiple potential Heap-based overflow...

FreeBSD : dnsmasq -- DNS cache poisoning, and DNSSEC buffer overflow, vulnerabilities (5b5cf6e5-5b51-11eb-95ac-7f9491278677)

Simon Kelley reports : There are broadly two sets of problems. The first is subtle errors in dnsmasq's protections against the chronic weakness of the DNS protocol to cache-poisoning attacks; the Birthday attack, Kaminsky, etc.... the second set of errors is a good old fashioned buffer overflow i...