ProxyShell and PetitPotam exploits weaponized by LockFile Ransomware Group

THREAT LEVEL: Red. For a detailed advisory, download the pdf file here. LockFile, a new ransomware gang, has been active since last week. LockFile began by using a publicly disclosed PetitPotam exploit CVE-2021-36942 to compromise Windows Domain Controllers earlier this week. Using ProxyShell...

PT-2021-18929 · Apple · Ios +1

Name of the Vulnerable Software and Affected Versions: iOS versions prior to 15 iPadOS versions prior to 15 Description: A logic issue existed in the handling of document loads, which was addressed with improved state management. Previewing an html file attached to a note may unexpectedly contact...

ProxyShell Attacks Pummel Unpatched Exchange Servers

Over the weekend, the Cybersecurity & Infrastructure Security Agency CISA issued an urgent alert that attackers are actively attacking ProxyShell vulnerabilities in unpatched Microsoft Exchange Servers, joining researchers in urging organizations to immediately install the latest Microsoft Securi...

CVE-2021-39362

An XSS issue was discovered in ReCaptcha Solver 5.7. A response from Anti-Captcha.com, RuCaptcha.com, 2captcha.com, DEATHbyCAPTCHA.com, ImageTyperz.com, or BestCaptchaSolver.com in setCaptchaCode is inserted into the DOM as HTML, resulting in full control over the user's browser by these servers...

CVE-2021-39362

An XSS issue was discovered in ReCaptcha Solver 5.7. A response from Anti-Captcha.com, RuCaptcha.com, 2captcha.com, DEATHbyCAPTCHA.com, ImageTyperz.com, or BestCaptchaSolver.com in setCaptchaCode is inserted into the DOM as HTML, resulting in full control over the user's browser by these servers...

WARNING: Microsoft Exchange Under Attack With ProxyShell Flaws

The U.S. Cybersecurity and Infrastructure Security Agency is warning of active exploitation attempts that leverage the latest line of "ProxyShell" Microsoft Exchange vulnerabilities that were patched earlier this May, including deploying LockFile ransomware on compromised systems. Tracked as...

openSUSE 15 Security Update : fetchmail (openSUSE-SU-2021:2791-1)

The remote SUSE Linux SUSE15 host has packages installed that are affected by a vulnerability as referenced in the openSUSE-SU-2021:2791-1 advisory. - reportvbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf valist argument, which might allow mail server...

Metasploit Wrap-Up

Anyone enjoy making chains? The community is hard at work building chains to pull sessions out of vulnerable Exchange servers. This week Rapid7's own wvu & Spencer McIntyre added a module that implements the ProxyShell exploit chain originally demonstrated by Orange Tsai. The module also benefite...

Postmortem on U.S. Census Hack Exposes Cybersecurity Failures

Threat actors exploited an unpatched Citrix flaw to breach the network of the U.S. Census Bureau in January in an attack that was ultimately halted before a backdoor could be installed or sensitive data could be stolen, according to a report by a government watchdog organization. However,...

ICSA-21-231-01_AVEVA SuiteLink Server

1. EXECUTIVE SUMMARY CVSS v3 8.1 ATTENTION: Exploitable remotely/low attack complexity Vendor: AVEVA Software, LLC Equipment: SuiteLink Server Vulnerabilities: Heap-based Buffer Overflow, Null Pointer Dereference, Improper Handling of Exceptional Conditions 2. RISK EVALUATION Successful...

HolesWarm Malware Exploits Unpatched Windows, Linux Servers

By leveraging more than 20 known vulnerabilities in Linux and Windows servers, the HolesWarm cryptominer malware has been able to break into more than 1,000 cloud hosts just since June. The basic cryptominer botnet has been so successful at juggling so many different known vulnerabilities between...

CVE-2021-29991

Firefox incorrectly accepted a newline in a HTTP/3 header, interpretting it as two separate headers. This allowed for a header splitting attack against servers using HTTP/3. This vulnerability affects Firefox 91.0.1 and Thunderbird 91.0.1...

OpenSSL: OCSP Invalid Key DoS Issue (20130205) - Windows

OpenSSL is prone to a denial of service attack. Copyright C 2021 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

CVE-2021-22931

Node.js before 16.6.0, 14.17.4, and 12.22.4 is vulnerable to Remote Code Execution, XSS, Application crashes due to missing input validation of host names returned by Domain Name Servers in Node.js dns library which can lead to output of wrong hostnames leading to Domain Hijacking and injection...

Input validation

Node.js before 16.6.0, 14.17.4, and 12.22.4 is vulnerable to Remote Code Execution, XSS, Application crashes due to missing input validation of host names returned by Domain Name Servers in Node.js dns library which can lead to output of wrong hostnames leading to Domain Hijacking and injection...

CVE-2021-22931

Node.js before 16.6.0, 14.17.4, and 12.22.4 is vulnerable to Remote Code Execution, XSS, Application crashes due to missing input validation of host names returned by Domain Name Servers in Node.js dns library which can lead to output of wrong hostnames leading to Domain Hijacking and injection...

Dell OpenManage Enterprise Operating System Command Injection Vulnerability (CNVD-2021-92459)

Dell OpenManage Enterprise is an easy-to-use, one-to-many systems management console for IT infrastructure management from Dell, Inc. The software supports cost-effective, comprehensive lifecycle management of Dell EMC PowerEdge servers from a single console. An operating system command injection...

Dell OpenManage Enterprise Improper Authentication Vulnerability

Dell OpenManage Enterprise is an easy-to-use, one-to-many system management console for IT infrastructure management from Dell, Inc. The software supports cost-effective, comprehensive lifecycle management of Dell EMC PowerEdge servers in a single console. An unauthenticated remote attacker could...

When curl is instructed to get content using the metalink feature and a user name and password are used to download the metalink XML file those same credentials are then subsequently passed on to each of the servers from which curl will download or try to download the contents from. Often contrary to the user's expectations and intentions and without telling the user it happened.

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Exchange Servers Under Active Attack via ProxyShell Bugs

Researchers’ Microsoft Exchange server honeypots are being actively exploited via ProxyShell: The name of an attack disclosed at Black Hat last week that chains three vulnerabilities to enable unauthenticated attackers to perform remote code execution RCE and snag plaintext passwords. In his Blac...