#linux

Debian Linux Security Advisory 5785-1 - Dom Walden discovered that the AbuseFilter extension in MediaWiki, a website engine for collaborative work, performed incomplete authorisation checks.

Perfctl malware is hard to detect, persists after reboots, and can perform a breadth of malicious activities.

ABB Cylon Aspect version 3.07.02 suffers from an authenticated arbitrary file disclosure vulnerability. Input passed through the file GET parameter through the downloadDb.php script is not properly verified before being used to download database files. This can be exploited to disclose the contents of arbitrary and sensitive files via directory traversal attacks.

Debian Linux Security Advisory 5784-1 - Fabian Vogt reported that the PAM module in oath-toolkit, a collection of components to build one-time password authentication systems, does not safely perform file operations in users's home directories when using the usersfile feature (allowing to place the OTP state in the home directory of the to-be-authenticated user). A local user can take advantage of this flaw for root privilege escalation.

Debian Linux Security Advisory 5783-1 - Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code.

Debian Linux Security Advisory 5782-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

There appears to be some (possibly deprecated) code associated with AF_QIPCRTR sockets in bpf_service.c. Within this file are some ioctl handlers - e.g. qrtr_bpf_filter_attach and qrtr_bpf_filter_detach. In the case of qrtr_bpf_filter_detach, the global pointer bpf_filter is fetched and freed while only holding a socket lock (and an irrelevant rcu_read_lock) - this may lead directly to double frees or use-after-free (kernel memory corruption) if a malicious user is able to call the QRTR_DETTACH_BPF ioctl on multiple AF_QIPCRTR sockets at once. Based on Android SELinux files, it appears this may be possible from some lower-privileged vendor and HAL services.

Cloudflare has disclosed that it mitigated a record-breaking distributed denial-of-service (DDoS) attack that peaked at 3.8 terabits per second (Tbps) and lasted 65 seconds. The web infrastructure and security company said it fended off "over one hundred hyper-volumetric L3/4 DDoS attacks throughout the month, with many exceeding 2 billion packets per second (Bpps) and 3 terabits per second (

Despite what lessons we thought we learned from Colonial Pipeline, none of those lessons have been able to be put into practice.

New Linux malware ‘Perfctl’ is targeting millions worldwide, mimicking system files to evade detection. This sophisticated malware compromises…