CVE-2023-20273

Government intelligence and cybersecurity agencies from 13 countries have released a joint advisory detailing the techniques used by Salt Typhoon, a Chinese state-sponsored APT group that has targeted telecommunications, government, transportation, lodging and military infrastructure networks from around the world. The agencies have linked Salt Typhoon’s activities to multiple Chinese entities, including three technology companies […]

China-linked APT ‘Salt Typhoon’ exploited known router flaws to maintain persistent access across telecom, government, and military networks, giving Beijing’s intelligence services global surveillance reach.

NSA and allies warn that Chinese APT actors, including Salt Typhoon, are targeting critical infrastructure worldwide. The U.S. National Security Agency (NSA), the UK’s National Cyber Security Centre (NCSC), and allies warn Chinese APT actors, linked to Salt Typhoon, are targeting global telecom, government, transport, lodging, and military sectors. “The National Security Agency (NSA) and […]

China-linked APT Salt Typhoon breached a U.S. Army National Guard unit’s network, accessed configs, and intercepted communications with other units. A DoD report warns that China-nexus hacking group Salt Typhoon breached a U.S. state’s Army National Guard network from March to December 2024. The APT stole network configs, admin credentials, and data exchanged with units […]

Chinese-backed APT group Salt Typhoon extensively compromised a US state’s Army National Guard network for nine months, stealing sensitive military data and gaining access to networks in every other US state and at least four territories, according to a Department of Homeland Security memo that warned the breach could facilitate attacks on critical infrastructure nationwide. […]

Chinese hacking group Salt Typhoon targeted a National Guard unit’s network and tapped into communications with other units.

Canada and FBI warn of China-linked APT Salt Typhoon targeting Canadian telecom firms in ongoing cyber espionage operations. The Canadian Centre for Cyber Security and the FBI warn that China-linked APT cyber espionage group Salt Typhoon, is targeting Canadian telecom firms in espionage attacks. The Salt Typhoon hacking campaign, active for 1–2 years, has targeted […]

China-linked APT Salt Typhoon has reportedly targeted satellite firm Viasat, the group has breached multiple telecom providers in the past. China-linked APT group Salt Typhoon hacked the satellite communications firm Viasat, the cyber-espionage group has previously breached the networks of multiple other telecom providers in the United States and globally. Viasat is a global communications […]

Denmark ‘s cybersecurity agency warns of increased state-sponsored campaigns targeting the European telecom companies Denmark raised the cyber espionage threat level for its telecom sector from medium to high due to rising threats across Europe. The Danish Social Security Agency published a new threat assessment for the cyber threat to the telecommunications sector that highlights […]

Cisco Talos observed Chinese hackers pivoting from a compromised device operated by one telecom to target a device in another telecom.

China-linked cyber espionage group Salt Typhoon uses custom malware JumbledPath to on spy U.S. telecom providers. Cisco Talos researchers reported that China-linked APT group Salt Typhoon uses a custom-built utility, dubbed JumbledPath, to spy on network traffic of U.S. telecommunication providers. China-linked APT group Salt Typhoon (also known as FamousSparrow and GhostEmperor) and has been active since at least 2019 and […]

China-linked APT Salt Typhoon has breached more U.S. telecommunications providers via unpatched Cisco IOS XE network devices. China-linked APT group Salt Typhoon is still targeting telecommunications providers worldwide, and according to a new report published by Recorded Future’s Insikt Group, the threat actors has breached more U.S. telecommunications providers by exploiting unpatched Cisco IOS XE […]

China-linked APT Salt Typhoon has been exploiting known vulnerabilities in Cisco devices in attacks on telecom providers in the US and abroad.

Five Eyes cybersecurity agencies have released guidance on securing edge devices against increasing threats.

Most of the top frequently exploited vulnerabilities in 2023 were initially exploited as zero-days, according to data from government agencies.

The Shadowserver Foundation warns of an increase in the number of devices hacked via recent Cisco IOS XE vulnerabilities.

Introduction This post is a follow up to https://horizon3.ai/attack-research/attack-blogs/cisco-ios-xe-cve-2023-20198-theory-crafting/. Previously, we explored the patch for CVE-2023-20273 and CVE-2023-20198 affecting Cisco IOS XE and identified some likely vectors an attacker might have used to exploit these vulnerabilities. Now, thanks to SECUINFRA FALCON TEAM’s honeypot, we have further insight into these vulnerabilities. POC See below for an […]

Introduction There has been a lot of news around the recent Cisco IOS XE vulnerabilities CVE-2023-20198 and CVE-2023-2073. Information about this vulnerability was first published by Cisco on October 16th, 2023, and since then we have seen evidence of mass exploitation and implantation. In this post we share our technical insights so far into these […]

Rockwell Automation has warned customers about the impact of the actively exploited Cisco IOS XE zero-day on its Stratix industrial switches.

Cisco has released fixes to address two vulnerabilities – CVE-2023-20198 and CVE-2023-20273 – that hackers exploited to compromise tens of thousands of IOS XE devices. CVE-2023-20198 could allow a remote, unauthenticated attacker to create an account on an affected system with privilege level 15 access. The attacker can then use that account to gain control […]

The number of Cisco devices hacked via recent zero-days remains high, but the attackers have updated their implant.

US CISA added the vulnerability CVE-2023-20273 in Cisco IOS XE to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added the vulnerability CVE-2023-20273 in Cisco IOS XE to its Known Exploited Vulnerabilities catalog. The vulnerability is an unspecified issue in the web user interface. An attacker can chain this flaw with CVE-2023-20198 to leverage the new […]

Cisco found a second IOS XE zero-day vulnerability, tracked as CVE-2023-20273, which is actively exploited in attacks in the wild. Cisco last week warned customers of a zero-day vulnerability, tracked as CVE-2023-20198 (CVSS score 10), in its IOS XE Software that is actively exploited in attacks. The IT giant found the vulnerability during the resolution of multiple Technical Assistance […]

Cisco has found a second zero-day vulnerability that has been exploited in recent attacks as the number of hacked devices has started dropping.

Cisco has released the first fixes for the IOS XE zero-day (CVE-2023-20198) exploited by attackers to ultimately deliver a malicious implant. The fixes were made available on Sunday, but a curious thing happened the day before: several cybersecurity companies and organizations have noticed a drastic reduction in the number of internet-facing Cisco devices that saddled with the implant. The reason behind that change is still unclear, but several theories have been put forward. The attackers … More →