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Showing posts with label Apache Vulnerability. Show all posts

Log4Shell Utilized for Crypto Mining and Botnet Creation

 

The serious problem in Apache's widely used Log4j project, known as Log4Shell, hasn't caused the calamity predicted, but it is still being exploited, primarily from cloud servers in the United States. Because it was reasonably straightforward to exploit and since the Java application logging library is implemented in many different services, the Log4Shell vulnerability was brought to attention as it raised concerns for being potentially abused by attackers. 

According to a Barracuda study, the targeting of Log4Shell has fluctuated over the last few months, but the frequency of exploitation attempts has remained pretty stable. Barracuda discovered the majority of exploitation attempts originated in the United States, followed by Japan, Central Europe, and Russia. 

Researchers discovered the Log4j version 2.14.1 in December 2021. Reportedly, all prior versions were vulnerable to CVE-2021-44228, also known as "Log4Shell," a significant zero-day remote code execution bug.

Log4j's creator, Apache, attempted to fix the problem by releasing version 2.15.0. However, the vulnerabilities and security flaws prolonged the patching race until the end of every year, when version 2.17.1 ultimately fixed all issues. 

Mirai malware infiltrates a botnet of remotely managed bots by targeting publicly outed network cameras, routers, and other devices. The threat actor can then use this botnet to launch DDoS assaults on a single target, exhausting its resources and disrupting any online services. The malicious actors behind these operations either rent vast botnet firepower to others or undertake DDoS attacks to extort money from businesses. Other payloads which have been discovered as a result of current Log4j exploitation include: 

  • Malware is known as BillGates (DDoS)
  • Kinsing is a term used to describe the act of (cryptominer) 
  • XMRig XMRig XMRig X (cryptominer) 
  • Muhstik Muhstik Muhstik (DDoS) 

The payloads range from harmless online jokes to crypto-mining software, which utilizes another person's computers to solve equations and earn the attacker cryptocurrency like Monero. 

The simplest method to protect oneself from these attacks is to update Log4j to version 2.17.1 or later, and to maintain all of the web apps up to date. Even if the bulk of threat actors lose interest, some will continue to target insecure Log4j deployments since the numbers are still significant. 

Security updates have been applied to valuable firms which were lucrative targets for ransomware assaults, but neglected systems running earlier versions are good targets for crypto mining and DDoS attacks.

Phishing Attack Emerges as a Primary Threat Vector in X-Force Threat Intelligence Index 2022

 

IBM published its tenth X-Force Threat Intelligence Index last week unveiling phishing attacks as the primary threat vector in the past year, with manufacturing emerging as the most targeted sector. IBM security analysts spotted a 33% surge in attacks caused by vulnerability exploitation of Log4Shell, a point of entry that malicious actors relied on more than any other to launch their assaults in 2021, representing the cause of 44% of ransomware attacks. 

The 2022 Threat Intelligence Index was compiled from billions of data points, ranging from network and endpoint detection devices, incident response engagements, phishing kits, and domain name tracking. It was revealed that threat actors employed phishing in 41% of attacks, surging from 2020 when it was responsible for 33% of attacks. Interestingly, click rates for the average targeted phishing campaign surged nearly three-fold, from 18% to 53% when phone phishing (vishing) was also employed by malicious actors. 

The X-Force report highlights the record-high number of vulnerabilities unearthed in 2021, including a vulnerability in the Kaseya monitoring software that was exploited by REvil in July, and the Log4j (or Log4Shell) vulnerability in Apache’s popular logging library. Cybercriminals from across the globe were so quick to exploit Log4j that it occupied the number two spot on the X-Force top 10 lists of most exploited vulnerabilities in 2021, despite only being discovered in December last year. The top vulnerability was a flaw in Microsoft Exchange that allowed attackers to bypass authentication to impersonate an administrator. 

Additionally in the UK, nearly 80% of users received a malicious call or text last year. To counter the threat, regulator Ofcom published new guidelines this week which will require more proactive work from operators to root out the use of spoofed numbers. 

“X-Force observed actors leveraging multiple known vulnerabilities, such as CVE-2021-35464 (a Java deserialization vulnerability) and CVE-2019-19781 (a Citrix path traversal flaw), to gain initial access to networks of interest. In addition, we observed threat actors leverage zero-day vulnerabilities in major attacks like the Kaseya ransomware attack and Microsoft Exchange Server incidents to access victim networks and devices,” researchers explained. 

To mitigate the risks, researchers advised organizations to update their vulnerability management system, identify security loopholes, and prioritize vulnerabilities based on the likelihood they will be abused.

Apache Httpd 2.4.39 Fixed the Flaw Which Let Users Gain Root Access



A vulnerability in the Apache HTTP server which allows users to write and run scripts in order to gain root on Unix systems was patched in Apache httpd 2.4.39 release.

According to the changelog which was tracked as CVE-2019-0211, all Apache HTTP Server releases were impacted, starting from 2.4.17 to 2.4.38. Additionally, the execution of arbitrary code through scoreboard manipulation has also been made possible.

As the web server is employed for running shared hosting instances, Mark J. Cox, Apache Software Foundation and the OpenSSL project founding member, emphasized on the seriousness of the issue in a Twitter post he made about CVE-2019-0211 security issue.

Users with few permissions on the server would now be able to extend the privileges by making the use of scripts which run commands on defenseless Apache servers as root, Cox further explained.

Along with this major flaw, two other control bypass security vulnerabilities were also patched with the Apache HTTP Server 2.4.39 release.

Besides these three, the latest Apache httpd release also fixed three less severe flaws which potentially could have led to normalization inconsistency issues and crashes.

The privilege escalation vulnerability of significant severity was reported by a security engineer on February 22 along with a response and reportedly a fix have been provided by Apache on March 7.





Security flaw in India Post server revealed by researcher

French security researcher Robert Baptiste who goes by Elliot Anderson on Twitter has been revealing cybersecurity flaws in the Indian scene for a while now. This time, he has reported a vulnerability on the India Post server that allows remote code execution.

Baptiste has in fact reported this flaw in place of an Indian researcher who chose to remain anonymous because of legal implications in face of Indian law.

The subdomain of India Post — digitization.indiapost.gov.in — was vulnerable to an Apache vulnerability i.e. CVE 2017-5638. It meant that the attacker would be able to run code on India Post server, as shown below:




The flaws led to exposed bank details of employees as well as databases of sensitive information. He posted several screenshots of the files he was able to access by exploiting the flaw.


He also revealed that he was not the first person to exploit these flaws and posted screenshots that show activity from almost a year ago on 14th April, 2017.


The vulnerability has since been fixed, leading to Elliot Anderson tweeting out the details of this recent hack.



NIC uses vulnerable Apache version, results in "Expect header XSS" vulnerability


The hackers who recently defaced Top level Domains of Turkmenistan by exploiting the vulnerability in NIC.tm, has discovered another vulnerability in the website.

They found that the few NIC websites uses the vulnerable version of Apache server(version 1.3.33) .   The version has a security flaw that exists in the handling of invalid Expect headers. Modifying the Expect header value to XSS code results in Cross site scripting attack.

GET / HTTP/1.1
Expect: <script>alert("E Hacking News")</script>
Host: nic.tm
Connection: Keep-alive
Accept-Encoding: gzip,deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)
Acunetix-Product: WVS/8.0 (Acunetix Web Vulnerability Scanner - NORMAL)
Acunetix-Scanning-agreement: Third Party Scanning PROHIBITED
Acunetix-User-agreement: http://www.acunetix.com/wvs/disc.htm
Accept: */*

Expect Header xss attack


The vulnerability affects four NIC websites : www.nic.ac, www.nic.tm ,www.nic.io,www.nic.sh.

There is another important security flaw in the Apache server : Mod_rewrite which is vulnerable to buffer overflow(Vulnerability Details). 

Vulnerability in Millions of LaserJet printers allows remote Hacking

A Vulnerability in Millions of LaserJet printers allows remote hacker to install/execute malicious firmware , discovered by Researchers At Columbia University.  They discovered this vulnerability in HP Lasterjet printers, perhaps on other firms’ printers, too.

"Could a hacker from half-way around the planet control your printer and give it instructions so frantic that it could eventually catch fire? Or use a hijacked printer as a copy machine for criminals, making it easy to commit identity theft or even take control of entire networks that would otherwise be secure?"

Interestingly , an attacker can make physical damage to victims' printer remotely using this vulnerability. Unfortunately, there is no easy fix for this vulnerability and there's no way to tell if hackers have already exploited it.

The researcher reported to HP( Hewlett-Packard) about this security flaw last week. HP said Monday that it is still reviewing details of the vulnerability, and is unable to confirm or deny many of the researchers’ claims, but generally disputes the researchers’ characterization of the flaw as widespread.

Keith Moore, chief technologist for HP's printer division, said the firm "takes this very seriously,” but his initial research suggests the likelihood that the vulnerability can be exploited in the real world is low in most cases.

“Until we verify the security issue, it is difficult to comment,” he said, adding that the firm cannot say yet what printer models are impacted.

Columbia researcher Ang Cui explains how he was able to infect an HP printer with malicious code.

But the Columbia researchers say the security vulnerability is so fundamental that it may impact tens of millions of printers and other hardware that use hard-to-update “firmware” that’s flawed.

Continue the Full article here.

Apache 2.2.20 released to fix DDoS vulnerability

Today, Apache 2.2.20 released to in order to fix the DDOS vulnerability reported few days back.

Fix handling of byte-range requests to use less memory, to avoid denial of service. If the sum of all ranges in a request is larger than the original file, ignore the ranges and send the complete file.

For more Details:
https://www.apache.org/dist/httpd/Announcement2.2.html