Second Log4j vulnerability CVE 2021-45046 discovered, patch already released

A second vulnerability involving Apache Log4j was found on Tuesday after cybersecurity experts spent days attempting to patch or mitigate CVE-2021-44228. The description of the new vulnerability, CVE 2021-45046, says the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was Read More …

CISA Issues Apache Log4j Vulnerability Guidance

CISA and its partners, through the Joint Cyber Defense Collaborative, are responding to active, widespread exploitation of a critical remote code execution (RCE) vulnerability (CVE-2021-44228) in Apache’s Log4j software library, versions 2.0-beta9 to 2.14.1, known as “Log4Shell” and “Logjam.” Log4j Read More …

Log4j flaw: Nearly half of corporate networks have been targeted by attackers trying to use this vulnerability

The number of attacks aiming to take advantage of the recently disclosed security flaw in the Log4j2 Java logging library continues to grow. The vulnerability (CVE-2021-44228) was publicly disclosed on December 9 and enables remote code execution and access to Read More …

Actively Exploited Microsoft Zero-Day Allows App Spoofing, Malware Delivery

Microsoft has addressed a zero-day vulnerability that was exploited in the wild to deliver Emotet, Trickbot and more in the form of fake applications. The patch came as part of the computing giant’s December Patch Tuesday update, which included a Read More …

Multiple Vulnerabilities in Apache HTTP Server Affecting Cisco Products

On September 16, 2021, the Apache Software Foundation disclosed five vulnerabilities affecting the Apache HTTP Server (httpd) 2.4.48 and earlier releases. For a description of these vulnerabilities, see the Apache HTTP Server 2.4.49 section of the Apache HTTP Server 2.4 Read More …

SonicWall ‘strongly urges’ customers to patch critical SMA 100 bugs

SonicWall ‘strongly urges’ organizations using SMA 100 series appliances to immediately patch them against multiple security flaws rated with CVSS scores ranging from medium to critical. The bugs (reported by Rapid7’s Jake Baines and NCC Group’s Richard Warren) impact SMA Read More …

Two Birds With One Stone: An Introduction To V8 And JIT Exploitation

In this special blog series, ZDI Vulnerability Researcher Hossein Lotfi looks at the exploitation of V8 – Google’s open-source high-performance JavaScript and WebAssembly engine – through the lens of a bug used during Pwn2Own Vancouver 2021. The contest submission from Read More …

Unpatched HiveNightmare/SeriousSAM Windows Zero-Day Allows Privileged File Access

An unpatched Windows security vulnerability could allow information disclosure and local privilege escalation (LPE), researchers have warned. The issue (CVE-2021-24084) has yet to get an official fix, making it a zero-day bug – but a micropatch has been rolled out Read More …

Attackers Actively Target Windows Installer Zero-Day

Attackers are actively exploiting a Windows Installer zero-day vulnerability that was discovered when a patch Microsoft issued for another security hole inadequately fixed the original and unrelated problem. Over the weekend, security researcher Abdelhamid Naceri discovered a Windows Installer elevation-of-privilege Read More …