Qualys TRU Uncovers Chained LPE: SUSE 15 PAM to Full Root via libblockdev/udisks

The Qualys Threat Research Unit TRU has discovered two linked local privilege escalation LPE flaws. The first CVE-2025-6018 resides in the PAM configuration of openSUSE Leap 15 and SUSE Linux Enterprise 15. Using this vulnerability, an unprivileged local attacker—for example, via SSH—can elevate ...

Qualys TRU Discovers Three Bypasses of Ubuntu Unprivileged User Namespace Restrictions

The Qualys Threat Research Unit TRU recently disclosed three security bypasses in Ubuntu's unprivileged user namespace restrictions. Qualys responsibly disclosed these vulnerabilities to the Ubuntu Security Team on January 15, 2025, and has been working with Ubuntu since then. Qualys TRU uncovere...

New OpenSSH Flaws Enable Man-in-the-Middle and DoS Attacks — Patch Now

Two security vulnerabilities have been discovered in the OpenSSH secure networking utility suite that, if successfully exploited, could result in an active machine-in-the-middle MitM and a denial-of-service DoS attack, respectively, under certain conditions. The vulnerabilities, detailed by the...

Qualys TRU Discovers Two Vulnerabilities in OpenSSH: CVE-2025-26465 & CVE-2025-26466

The Qualys Threat Research Unit TRU has identified two vulnerabilities in OpenSSH. The first, tracked as CVE-2025-26465, allows an active machine-in-the-middle attack on the OpenSSH client when the VerifyHostKeyDNS option is enabled. The second, CVE-2025-26466, affects both the OpenSSH client and...

Proactively Managing High-Risk Vulnerabilities with TruRisk Mitigate™

In late 2024, organizations faced over 65 million detections from three critical vulnerabilities—CVE-2013-2900, CVE-2024-38122, and CVE-2024-30078—underscoring the urgent need for proactive vulnerability management. Adding to these challenges, the Qualys Threat Research Unit TRU uncovered five...

Decades-Old Security Vulnerabilities Found in Ubuntu's Needrestart Package

Multiple decade-old security vulnerabilities have been disclosed in the needrestart package installed by default in Ubuntu Server since version 21.04 that could allow a local attacker to gain root privileges without requiring user interaction. The Qualys Threat Research Unit TRU, which identified...

Qualys TRU Uncovers Five Local Privilege Escalation Vulnerabilities in needrestart

The Qualys Threat Research Unit TRU has identified five Local Privilege Escalation LPE vulnerabilities within the needrestart component, which is installed by default on Ubuntu Server. These vulnerabilities can be exploited by any unprivileged user to gain full root access without requiring user...

Top MITRE ATT&CK Tactics and Techniques Leveraged in 2023

The Qualys Threat Research Unit has mapped vulnerabilities and misconfigurations to the MITRE ATT&CK framework tactics and techniques to help you get the attacker’s view. They have also analyzed vulnerabilities and misconfigurations across all our customers to find the top tactics and techniques...

Exploit for Heap-based Buffer Overflow in Gnu Glibc

Proof of concept for CVE-2023-4911 Looney Tunables This vu...

Security Patch for Two New Flaws in Curl Library Arriving on October 11

The maintainers of the Curl library have released an advisory warning of two security vulnerabilities that are expected to be addressed as part of an forthcoming update set for release on October 11, 2023. This includes a high-severity and a low-severity flaw tracked under the identifiers...

Exploit for Heap-based Buffer Overflow in Gnu Glibc

PoC of CVE-2023-4911 "Looney Tunables" This is a PoC of CVE-2...

CVE-2023-4911: Looney Tunables – Local Privilege Escalation in the glibc’s ld.so

The Qualys Threat Research Unit TRU has discovered a buffer overflow vulnerability in GNU C Librarys dynamic loaders processing of the GLIBCTUNABLES environment variable. We have successfully identified and exploited this vulnerability a local privilege escalation that grants full root privileges...

BitRAT Now Sharing Sensitive Bank Data as a Lure

Introduction In June of 2022 Qualys Threat Research Unit TRU wrote an in-depth report on Redline, a commercial off the shelf infostealer that spreads via fake cracked software hosted on Discord’s content delivery network. Since then, we have continued to track similar threats to identify their...