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CVE-2023-20177: Cisco Security Advisory: Cisco Firepower Threat Defense Software SSL/TLS URL Category and Snort 3 Detection Engine Bypass and Denial of Service Vulnerability

A vulnerability in the SSL file policy implementation of Cisco Firepower Threat Defense (FTD) Software that occurs when the SSL/TLS connection is configured with a URL Category and the Snort 3 detection engine could allow an unauthenticated, remote attacker to cause the Snort 3 detection engine to unexpectedly restart. This vulnerability exists because a logic error occurs when a Snort 3 detection engine inspects an SSL/TLS connection that has either a URL Category configured on the SSL file policy or a URL Category configured on an access control policy with TLS server identity discovery enabled. Under specific, time-based constraints, an attacker could exploit this vulnerability by sending a crafted SSL/TLS connection through an affected device. A successful exploit could allow the attacker to trigger an unexpected reload of the Snort 3 detection engine, resulting in either a bypass or denial of service (DoS) condition, depending on device configuration. The Snort 3 detection engine ...

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Mozi Botnet Takedown: Who Killed the IoT Zombie Botnet?

By Waqas The Mozi Botnet, one of the largest IoT botnets, has been taken down, but the responsible party remains unknown. This is a post from HackRead.com Read the original post: Mozi Botnet Takedown: Who Killed the IoT Zombie Botnet?

.US Harbors Prolific Malicious Link Shortening Service

The top-level domain for the United States -- .US -- is home to thousands of newly-registered domains tied to a malicious link shortening service that facilitates malware and phishing scams, new research suggests. The findings come close on the heels of a report that identified .US domains as among the most prevalent in phishing attacks over the past year.

Record-Breaking 100 Million RPS DDoS Attack Exploits HTTP/2 Rapid Reset Flaw

Cloudflare on Thursday said it mitigated thousands of hyper-volumetric HTTP distributed denial-of-service (DDoS) attacks that exploited a recently disclosed flaw called HTTP/2 Rapid Reset, 89 of which exceeded 100 million requests per second (RPS). "The campaign contributed to an overall increase of 65% in HTTP DDoS attack traffic in Q3 compared to the previous quarter," the web infrastructure

Threat Roundup for October 13 to October 20

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Oct. 13 and Oct. 20. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key

ShellBot Cracks Linux SSH Servers, Debuts New Evasion Tactic

The botnet — built for DDoS, backdooring, and dropping malware — is evading standard URL signature detections with a novel approach involving Hex IP addresses.

Top resources for Cybersecurity Awareness Month

Plus, many of the world’s largest cloud providers are warning of a vulnerability that attackers exploited in August to launch the largest distributed denial-of-service attack on record.

What to know about the HTTP/2 Rapid Reset DDoS attacks

Cisco Talos is actively tracking the novel distributed denial-of-service (DDoS) attacks cloud services provider Cloudflare disclosed earlier this week. The techniques described in Cloudflare’s blog post resulted in a record-breaking DDoS attack and could facilitate much larger attacks in the future.  CVE-2023-44487 CVE-2023-44487, a vulnerability in the

Gaza Conflict: How Israeli Cybersecurity Will Respond

The Israeli-Hamas war will most assuredly impact businesses when it comes to ramped-up cyberattacks. Experts say that Israel's considerable collection of cybersecurity vendors be a major asset on the cyber-front.