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March 19, 2023Severity Medium Analysis Summary CVE-2022-42436 IBM MQ Managed File Transfer could allow a local user to obtain sensitive information from diagnostic files. Impact Indicators Of Compromise […]March 19, 2023Severity Medium Analysis Summary CVE-2023-0027 Rockwell Automation Modbus TCP AOI Server could allow a remote attacker to obtain sensitive information. By sending a malformed message, an […]March 17, 2023Severity High Analysis Summary CVE-2023-27984 CVSS:7.8 Schneider Electric IGSS could allow a remote attacker to execute arbitrary code on the system, caused by improper input validation […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
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Platform
Managed Security Services
Managed Penetration Testing
Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.
Resources
March 19, 2023Severity Medium Analysis Summary CVE-2022-42436 IBM MQ Managed File Transfer could allow a local user to obtain sensitive information from diagnostic files. Impact Indicators Of Compromise […]March 19, 2023Severity Medium Analysis Summary CVE-2023-0027 Rockwell Automation Modbus TCP AOI Server could allow a remote attacker to obtain sensitive information. By sending a malformed message, an […]March 17, 2023Severity High Analysis Summary CVE-2023-27984 CVSS:7.8 Schneider Electric IGSS could allow a remote attacker to execute arbitrary code on the system, caused by improper input validation […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Rewterz Threat Advisory – CVE-2018-10938 – Linux Kernel Infinite Loop Vulnerability
September 6, 2018Rewterz Threat Advisory – Oracle VM Server for x86 update for kernel-uek
September 6, 2018
DNS auto-registration and auto-discovery can be used as proxy for gathering network packets, violating confidentiality.
IMPACT: NORMAL
PUBLISH DATE: 06-09-2018
OVERVIEW
If a malicious device is added to a network with the name ‘WPAD’ by a user with network access, they may use DNS auto-registration and auto-discovery to work as a proxy for victims on the network. This leads to a loss of confidentiality and integrity of any activity on the network.
ANALYSIS
Routers auto-registering names on LANs may lead to a breach in confidentiality and integrity of any network activity by exposing network packets. Many customer-premise routers have a convenience feature to support LAN based device discovery. They register by default a DNS A-record based on the names of device that visit LAN. Name for the A record is taken from the name supplied in the DHCP request of the visiting device.
This can be exploited with Proxy Auto-Configuration, based on the WPAD method. Other auto-discovery names like ISATAP, autodiscovery and autoconf may also serve for attack vectors.
Researchers reproduced PAC discovery based on WPAD name propagated through mDNS without cooperation of the LAN/WLAN router.
It has also been discovered that the protections against rogue DHCP servers or router advisements do not work against this sort of attack.
AFFECTED PRODUCTS
MITIGATION
For a short-term solution, home/office LAN/WLAN routers should not auto-register to their local DNS magic names related to autoconfiguration. Furthermore, mDNS based names should not be accepted by auto-discovery features as authoritative sources.