A new report from the Acronis Threat Research Unit has uncovered a vulnerability in Microsoft Exchange Online settings that could enable email spoofing attacks.
This issue primarily affects users with a hybrid configuration of on-premises Exchange and Exchange Online, and those utilizing third-party email security solutions. In July 2023, Microsoft introduced a major change in how it handles DMARC (Domain-based Message Authentication, Reporting, and Conformance) within Microsoft Exchange. This update was intended to bolster security by enhancing how email servers verify incoming emails’ legitimacy. Unfortunately, despite clear guidance from Microsoft, a considerable number of users have yet to implement these security measures.
Read more…
Source: TechRadar News
Related:
- Pulse Secure VPN zero-day used to hack defense firms, govt orgs
April 20, 2021
Pulse Secure has shared mitigation measures for a zero-day authentication bypass vulnerability in the Pulse Connect Secure (PCS) SSL VPN appliance actively exploited in attacks against worldwide organizations and focused on US Defense Industrial base (DIB) networks. To mitigate the vulnerability tracked as CVE-2021-22893 (with a maximum 10/10 severity score), Pulse Secure advises customers with gateways ...
- Zero-Day Exploits in SonicWall Email Security Lead to Enterprise Compromise
April 20, 2021
In March 2021, Mandiant Managed Defense identified three zero-day vulnerabilities in SonicWall’s Email Security (ES) product that were being exploited in the wild. These vulnerabilities were executed in conjunction to obtain administrative access and code execution on a SonicWall ES device. The adversary leveraged these vulnerabilities, with intimate knowledge of the SonicWall application, to install a ...
- NSA: 5 Security Bugs Under Active Nation-State Cyberattack
April 16, 2021
The Feds are warning that nation-state actors are once again after U.S. assets, this time in a spate of cyberattacks that exploit five vulnerabilities that affect VPN solutions, collaboration-suite software and virtualization technologies. According to the U.S. National Security Agency (NSA), which issued an alert Thursday, the advanced persistent threat (APT) group known as APT29 (a.k.a. ...
- Second Google Chrome zero-day exploit dropped on twitter this week
April 14, 2021
A second Chromium zero-day remote code execution exploit has been released on Twitter this week that affects current versions of Google Chrome, Microsoft Edge, and likely other Chromium-based browsers. A zero-day vulnerability is when detailed information about a vulnerability or an exploit is released before the affected software developers can fix it. These vulnerabilities pose a ...
- Zero-day vulnerability in Desktop Window Manager (CVE-2021-28310) used in the wild
April 13, 2021
While analyzing the CVE-2021-1732 exploit originally discovered by the DBAPPSecurity Threat Intelligence Center and used by the BITTER APT group, we discovered another zero-day exploit we believe is linked to the same actor. We reported this new exploit to Microsoft in February and after confirmation that it is indeed a zero-day, it received the designation ...
- CISA gives federal agencies until Friday to patch Exchange servers
April 13, 2021
The US Cybersecurity and Infrastructure Security Agency (CISA) has ordered federal agencies to install newly released Microsoft Exchange security updates by Friday. Today, Microsoft released security updates for four Microsoft Exchange vulnerabilities discovered by the NSA. These Exchange vulnerabilities are capable of remote code execution, with two vulnerabilities not requiring attackers to authenticate first. Read more… Source: Bleeping Computer Related story: ...