Protecting on-premises Exchange Servers against recent attacks

For the past few weeks, Microsoft and others in the security industry have seen an increase in attacks against on-premises Exchange servers. The target of these attacks is a type of email server most often used by small and medium-sized businesses, although larger organizations with on-premises...

Security Updates for Microsoft Visual Studio Products (March 2021)

The Microsoft Visual Studio Products are missing a security update. It is, therefore, affected by the following vulnerability: - A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. CVE-2021-21300 C Tenable Netwo...

Security Updates for Microsoft Sharepoint 2016 (March 2021)

The Microsoft SharePoint Server 2016 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities: - A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. CVE-2021-24104 ...

Security Updates for Microsoft SharePoint Server 2013 (March 2021)

The Microsoft SharePoint Server 2013 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities: - A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. CVE-2021-24104 ...

SUSE SLES15 Security Update : openssl-1_0_0 (SUSE-SU-2021:0769-1)

This update for openssl-100 fixes the following issues : CVE-2021-23840: Fixed an Integer overflow in CipherUpdate bsc1182333 CVE-2021-23841: Fixed a NULL pointer dereference in X509issuerandserialhash bsc1182331 Note that Tenable Network Security has extracted the preceding description block...

Security Updates for Microsoft SharePoint Server 2019 (March 2021)

The Microsoft SharePoint Server 2019 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities: - A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. CVE-2021-24104 ...

Security Advisory: Mitigating the Risk of Microsoft Exchange Zero-Day ProxyLogon Vulnerabilities

Microsoft recently released several security updates for Microsoft Exchange Server to address vulnerabilities that sophisticated nation-state actors are exploiting to exfiltrate critical data from a variety of organizations. Reports suggest attackers have been targeting these vulnerabilities sinc...

Vulnerabilities fixed in Red Hat OpenShift Virtualization

Red Hat has released updates to address multiple vulnerabilities fixes in OpenShift Virtualization. A malicious party could vulnerabilities potentially exploit them to cause a denial-of-service cause. Red Hat has released updates to fix the vulnerabilities in OpenShift Virtualization. For more...

Security Updates for Microsoft Office (February 2021) (macOS)

The Microsoft Office product installed on the remote host is missing security updates. It is, therefore, affected by multiple remote code execution vulnerabilities in Excel. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version numbe...

CentOS 8 : nodejs:10 (CESA-2021:0735)

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2021:0735 advisory. - nodejs: HTTP2 'unknownProtocol' cause DoS by resource exhaustion CVE-2021-22883 - nodejs: DNS rebinding in --inspect CVE-2021-22884 Note that Nessus...

Microsoft Releases March 2021 Security Updates

Microsoft has released updates to address multiple vulnerabilities in Microsoft software. A remote attacker can exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Microsoft’s March 2021 Security Update Summary and...

Fedora 32 : x11vnc (2021-c5b679877e)

The remote Fedora 32 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2021-c5b679877e advisory. - scan.c in x11vnc 0.9.16 uses IPCCREAT|0777 in shmget calls, which allows access by actors other than the current user. CVE-2020-29074 Note that...

Security Updates for Microsoft Office Online Server and Microsoft Office Web Apps (March 2021)

The Microsoft Office Web Apps installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities: - A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands...

Fedora 32 : firefox (2021-43088486b2)

The remote Fedora 32 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2021-43088486b2 advisory. - Stability update for hardware accelerated backend mozbz1694670. ---- New upstream version 86.0 FEDORA-2021-43088486b2 Note that Nessus has not tested for...

Fixed in Apache Tomcat 8.5.64

Important: Denial of Service CVE-2021-41079 When Tomcat was configured to use NIO+OpenSSL or NIO2+OpenSSL for TLS, a specially crafted packet could be used to trigger an infinite loop resulting in a denial of service. This was fixed with commit b90d4fc1. This issue was first reported to the Apach...

Fedora 33 : privoxy (2021-5fb8bd8258)

The remote Fedora 33 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2021-5fb8bd8258 advisory. - 3.0.32 FEDORA-2021-5fb8bd8258 Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number....

March 9, 2021—KB5000840 (Security-only update)

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March 9, 2021—KB5000844 (Monthly Rollup)

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Apple Plugs Severe WebKit Remote Code-Execution Hole

Apple is rolling out fixes for a high-severity vulnerability in its WebKit browser engine that, if exploited, could allow remote attackers to completely compromise affected systems. The mobile giant released security updates on Monday for the flaw, for its Safari browser, as well as devices runni...

SUSE-SU-2021:0737-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP1 kernel was updated receive various security and bugfixes. The following security bugs were fixed: - CVE-2021-26930: Fixed an improper error handling in blkback's grant mapping XSA-365 bsc1181843. - CVE-2021-26931: Fixed an issue where Linux kernel was treating gra...