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Black Hat Ethical Hacking
Auth Bypass Bug Exploited, Affecting Millions of Routers

https://www.blackhatethicalhacking.com/wp-content/uploads/2017/11/black-hat-locks-and-electronics.jpg Auth Bypass Bug Exploited, Affecting Millions of RoutersPost Views: 108
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An authentication-bypass vulnerability affecting multiple routers and internet-of-things (IoT) devices is being actively exploited in the wild, according to researchers.
A mere three days after disclosure, cyberattackers are hijacking home routers from 20 vendors & ISPs to add them to a Mirai-variant botnet used for carrying out DDoS attacks.
The security flaw, tracked as CVE-2021-20090, was disclosed last week by researchers at Tenable. It affects devices from 20 different vendors and ISPs (ADB, Arcadyan, ASMAX, ASUS, Beeline, British Telecom, Buffalo, Deutsche Telekom, HughesNet, KPN, O2, Orange, Skinny, SparkNZ, Telecom [Argentina], TelMex, Telstra, Telus, Verizon and Vodafone), all of which use the same firmware from Arcadyan. In all, millions of devices worldwide could be vulnerable.

Tenable demonstrated in a proof of concept (PoC) that it’s possible to modify a device’s configuration to enable Telnet on a vulnerable router and gain root level shell access to the device.

“The vulnerability exists due to a list of folders which fall under a ‘bypass list’ for authentication,” according to Tenable’s advisory on August 3. “For most of the devices listed, that means that the vulnerability can be triggered by multiple paths. For a device in which http://<ip/index.htm requires authentication, an attacker could access index.htm using the following paths:

* http://<ip/images/..%2findex.htm
* http://<ip/js/..%2findex.htm
* http://<ip/css/..%2findex.htm
See Also: Critical Cisco Bug in VPN Routers Allows Remote Takeover
“To have the pages load properly, one will need to use proxy match/replace settings to ensure any resources loaded which require authentication also leverage the path traversal,” the advisory continued. Exploited to Spread Mirai VariantJust three days after disclosure, on Friday, cybersecurity researchers from Juniper Networks said they had discovered active exploitation of the bug.

“We have identified some attack patterns that attempt to exploit this vulnerability in the wild coming from an IP address located in Wuhan, Hubei province, China,” they wrote in a post. “The attacker seems to be attempting to deploy a Mirai variant on the affected routers.”

Cleaving close to Tenable’s PoC, the attackers are modifying the configuration of the attacked device to enable Telnet using “ARC_SYS_TelnetdEnable=1” to take control, according to Juniper. Then, they proceed to download the Mirai variant from a command-and-control (C2) server and execute it.

Mirai is a long-running botnet that infects connected devices and can be used to mount distributed denial-of-service (DDoS) attacks. It burst on the scene in 2016, when it overwhelmed servers at the Dyn web hosting company, taking down more than 1,200 websites, including Netflix and Twitter. Its source code was leaked later that year, after which multiple Mirai variants began to crop up, in a barrage that continues to this day.

Some of the scripts in the current set of attacks bear resemblance to previously observed activity picked up in February and March, according to Juniper.

“The similarity could indicate that the same threat actor is behind this new attack and attempting to upgrade their infiltration arsenal with yet another freshly disclosed vulnerability,” researchers wrote. “Given that most people may not even be aware of the security risk and won’t be upgrading their device anytime soon, this attack tactic can[...]
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Black Hat Ethical Hacking Auth Bypass Bug Exploited, Affecting Millions of Routers https://www.blackhatethicalhacking.com/wp-content/uploads/2017/11/black-hat-locks-and-electronics.jpg Auth Bypass Bug Exploited, Affecting Millions of RoutersPost Views: 108…
be very successful, cheap and easy to carry out.”
See Also: Offensive Security Tool: Mimikatz In addition to the router bug, Juniper researchers observed the following known vulnerabilities being exploited to gain initial access to target devices:

* CVE-2020-29557 (DLink routers)
* CVE-2021-1497 and CVE-2021-1498 (Cisco HyperFlex)
* CVE-2021-31755 (Tenda AC11)
* CVE-2021-22502 (MicroFocus OBR)
* CVE-2021-22506 (MicroFocus AM)

In fact, the attackers have been continuously adding new exploits to its arsenal, according to the posting, and CVE-2021-20090 is unlikely to be the last.

“It is clear that threat actors keep an eye on all disclosed vulnerabilities,” researchers concluded. “Whenever an exploit PoC is published, it often takes them very little time to integrate it into their platform and launch attacks.”

To avoid compromise, users should update their firmware on the router. See Also: Hacking Stories: Andrian Lamo – The ‘homeless’ Hacker “In the case of IoT devices or home gateways, the situation is much worse as most users are not tech-savvy and even those who are do not get informed about potential vulnerabilities and patches to apply,” according to Juniper. “The only sure way to remedy this issue is to require vendors to offer zero-down-time automatic updates.”
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can I trust Hacktown on tor?

can I trust Hacktown on tor?

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weirdo acted as another highschooler from my school for over an hour to get my explicit pics

hey guys i wanna start this off with no i did not send pictures. i just want help on how to get an IP address/ how to link a persons one social media to their other medias. i am a girl and this guy which i imagine is older because it seemed like so slid up on my snapchat saying he went to my school. he answered no questions about dress code or any of the school plans. he tried to get pictures out of me over a long time but im not a troglodyte so i dodged these. anyway he admitted so can someone tell me how to find the IP address!! i kinda wanna scare him for making me cry and making me uncomfy, but also let me know if this is a bad idea... also idk if IP grabbing is hacks either so

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Elpscrk : An Intelligent Common User-Password Profiler Based On Permutations And Statistics

Elpscrk is an Intelligent common user-password profiler that’s named after the same tool in Mr. Robot series S01E01. In simple words, elpscrk will ask you about all info you know about your target then will try to generate every possible password the target could think of, it all depends on the information you give, the […]

The post Elpscrk : An Intelligent Common User-Password Profiler Based On Permutations And Statistics appeared first on Kali Linux Tutorials.

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