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...

Exploit for Off-by-one Error in Sudo_Project Sudo

CVE-2021-3156 Root shell PoC for CVE-2021-3156 no brutef...

dnsmasq: loose query name check in reply_query() makes forging replies easier for an off-path attacker

A flaw was found in dnsmasq. When getting a reply from a forwarded query, dnsmasq checks in forward.c:replyquery, which is the forwarded query that matches the reply, by only using a weak hash of the query name. Due to the weak hash CRC32 when dnsmasq is compiled without DNSSEC, SHA-1 when it is...

dnsmasq: loose query name check in reply_query() makes forging replies easier for an off-path attacker

A flaw was found in dnsmasq. When getting a reply from a forwarded query, dnsmasq checks in forward.c:replyquery, which is the forwarded query that matches the reply, by only using a weak hash of the query name. Due to the weak hash CRC32 when dnsmasq is compiled without DNSSEC, SHA-1 when it is...

dnsmasq: multiple queries forwarded for the same name makes forging replies easier for an off-path attacker

A flaw was found in dnsmasq. When receiving a query, dnsmasq does not check for an existing pending request for the same name and forwards a new request. By default, a maximum of 150 pending queries can be sent to upstream servers, so there can be at most 150 queries for the same name. This flaw...

Exploit for Off-by-one Error in Sudo_Project Sudo

CVE 2021-3156 How to pwn py...

Exploit for Off-by-one Error in Sudo_Project Sudo

PoC exploit for CVE-2021-3156, a vulnerability in the Linux kern...

Exploit for Off-by-one Error in Sudo_Project Sudo

CVE-2021-3156 xchg@ubuntu:/Desktop/CVE-2021-3156$ ./sudo-hax...

Exploit for Off-by-one Error in Sudo_Project Sudo

CVE-2021-3156 PoC for CVE-2021-3156 sudo heap overflow. Expl...

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...

Exploit for Off-by-one Error in Sudo_Project Sudo

CVE-2021-3156-Exp The exploit of CVE-2...

Exploit for Off-by-one Error in Sudo_Project Sudo

sudo Heap Overflow Vulnerability CVE-2021-3156 Vulnerabi...

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CVE-2021-3156-Baron-Samedit This repo contains my work on clum...

Exploit for Off-by-one Error in Sudo_Project Sudo

CVE-2021-3156 https://www.qualys.com/2021/01/26/cve-2021...

A flaw was found in dnsmasq before version 2.83. When receiving a query dnsmasq does not check for an existing pending request for the same name and forwards a new request. By default a maximum of 150 pending queries can be sent to upstream servers so there can be at most 150 queries for the same name. This flaw allows an off-path attacker on the network to substantially reduce the number of attempts that it would have to perform to forge a reply and have it accepted by dnsmasq. This issue is mentioned in the "Birthday Attacks" section of RFC5452. If chained with CVE-2020-25684 the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.

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ALPINE-CVE-2021-3156

Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character...

Scientific Linux Security Update : dnsmasq on SL7.x x86_64 (2021:0153)

The remote Scientific Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the SLSA-2021:0153-1 advisory. - dnsmasq: loose address/port check in replyquery makes forging replies easier for an off-path attacker CVE-2020-25684 - dnsmasq: loose query nam...

CentOS 7 : dnsmasq (RHSA-2021:0153)

The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0153 advisory. - 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 reply...

CVE-2021-3156

Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character...

Medium: dnsmasq

Issue Overview: A flaw was found in dnsmasq. When getting a reply from a forwarded query, dnsmasq checks in the forward.c:replyquery if the reply destination address/port is used by the pending forwarded queries. However, it does not use the address/port to retrieve the exact forwarded query,...