CVE-2023-36844

CISA has ordered US federal agencies to patch five vulnerabilities used by attackers to compromise Juniper networking devices, and to do so by Friday. Most of these bugs are not particularly severe by themselves, but they can be – and have been – chained together by attackers to achieve remote code execution on internet-facing vulnerable devices. The exploited vulnerabilities Juniper Networks fixed four flaws (numbered CVE-2023-36844 through CVE-2023-36847) affecting the J-Web GUI of Junos OS-powered … More →

US CISA added four vulnerabilities (tracked as CVE-2023-36844, CVE-2023-36845, CVE-2023-36846, and CVE-2023-36847) in Juniper devices to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added six new vulnerabilities to its Known Exploited Vulnerabilities catalog, five issues impacting Juniper Junos OS and one impacting the SysAid SysAid IT support software. Below is the list […]

Researchers discovered approximately 12,000 Juniper SRX firewalls and EX switches vulnerable to a recently disclosed CVE-2023-36845 RCE flaw. VulnCheck researchers discovered approximately 12,000 internet-exposed Juniper SRX firewalls and EX switches that are vulnerable to the recently disclosed remote code execution flaw CVE-2023-36845. In mid-August, Juniper addressed four medium-severity (CVSS 5.3) vulnerabilities (CVE-2023-36844, CVE-2023-36845, CVE-2023-36846, CVE-2023-36847) impacting […]

For the latest discoveries in cyber research for the week of 4th September, please download our Threat_Intelligence Bulletin TOP ATTACKS AND BREACHES The FBI announced operation ‘Duck Hunt’ dismantling the Qakbot (Qbot) malware operation that is active since at least 2008. Qakbot has been known to infect victims via spam emails with malicious attachments and […]

A new round of the weekly SecurityAffairs newsletter arrived! Every week the best security articles from Security Affairs are free for you in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. LockBit ransomware gang hit the Commission des services electriques de Montréal (CSEM) Social engineering attacks target […]

Threat actors started using the exploit chain in attacks on Juniper EX switches and SRX firewalls shortly after the release of the PoC code. This week, watchTowr Labs security researchers published a proof-of-concept exploit (PoC) exploit code for vulnerabilities in Juniper SRX firewalls. An unauthenticated attacker can chain the vulnerabilities to gain remote code execution in Juniper […]

Four recent vulnerabilities in the J-Web component of Junos OS have started being chained in malicious attacks after PoC exploit code was published.

Hackers have begun exploiting recently patched vulnerabilities in Juniper Networks firewalls that can be chained together to achieve remote code execution. Exploit details and a proof-of-concept were released late last week by a team of security researchers. “This is an interesting bug chain, utilizing two bugs that would be near-useless in isolation and combining them […]

Researchers published a PoC exploit code for Juniper SRX firewall flaws that can be chained to gain RCE in Juniper’s JunOS. watchTowr Labs security researchers published a proof-of-concept exploit (PoC) exploit code for vulnerabilities in Juniper SRX firewalls. An unauthenticated attacker can chain the vulnerabilities to gain remote code execution in Juniper JunOS on vulnerable […]

For the latest discoveries in cyber research for the week of 28th August, please download our Threat_Intelligence Bulletin TOP ATTACKS AND BREACHES An ongoing espionage campaign targeting dozens of organizations in Taiwan has been discovered. Researchers have attributed the activity to a Chinese APT group dubbed Flax Typhoon, which overlaps with Ethereal Panda. The threat […]

Researchers have released additional details about the recently patched four vulnerabilities affecting Juniper Networks’ SRX firewalls and EX switches that could allow remote code execution (RCE), as well as a proof-of-concept (PoC) exploit. Junos OS vulnerabilities and fixes Earlier this month, Juniper Networks published an out-of-cycle security bulletin notifying customers using its SRX firewalls and EX switches of vulnerabilities that, chained together, would allow attackers to remotely execute code on vulnerable appliances. The four vulnerabilities … More →

Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: Network detection and response in the modern era In this Help Net Security interview, David Gugelmann, CEO at Exeon, sheds light on the current cyber threats and their challenges for network security. He discusses the role of Network Detection and Response (NDR) solutions that leverage machine learning algorithms to improve threat detection and streamline incident response. Lazarus Group exploited ManageEngine … More →

Juniper Networks has fixed four vulnerabilities (CVE-2023-36844, CVE-2023-36845, CVE-2023-36846, CVE-2023-36847) in Junos OS that, if chained together, could allow attackers to achieve remote code execution (RCE) on the company’s SRX firewalls and EX switches. The fixed Junos OS vulnerabilities Junos OS is an operating system based on Linux and FreeBSD that runs on Juniper Networks firewalls, network switches and other security devices. The affected component – J-Web – is the graphical user interface (GUI) used … More →

Juniper Networks has released Junos OS updates to address J-Web vulnerabilities that can be combined to achieve unauthenticated, remote code execution.

Juniper Networks addressed multiple flaws in the J-Web component of Junos OS that could be chained to achieve remote code execution. Juniper Networks has released an “out-of-cycle” security update to address four vulnerabilities in the J-Web component of Junos OS. The vulnerabilities could be chained to achieve remote code execution on vulnerable appliances. The vulnerabilities […]