#mac

Code-signing certificates are supposed to help authenticate the identity of software publishers, and provide cryptographic assurance that a signed piece of software has not been altered or tampered with. Both of these qualities make stolen or ill-gotten code-signing certificates attractive to cybercriminal groups, who prize their ability to add stealth and longevity to malicious software. This post is a deep dive on "Megatraffer," a veteran Russian hacker who has practically cornered the underground market for malware focused code-signing certificates since 2015.

An analysis of the "evasive and tenacious" malware known as QBot has revealed that 25% of its command-and-control (C2) servers are merely active for a single day. What's more, 50% of the servers don't remain active for more than a week, indicating the use of an adaptable and dynamic C2 infrastructure, Lumen Black Lotus Labs said in a report shared with The Hacker News. "This botnet has adapted

RedTeam Pentesting discovered that the web interface of STARFACE as well as its REST API allows authentication using the SHA512 hash of the password instead of the cleartext password. While storing password hashes instead of cleartext passwords in an application's database generally has become best practice to protect users' passwords in case of a database compromise, this is rendered ineffective when allowing to authenticate using the password hash. Versions 7.3.0.10 and below are affected.

Ubuntu Security Notice 6127-1 - Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in the netfilter subsystem of the Linux kernel when processing batch requests, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Gwangun Jung discovered that the Quick Fair Queueing scheduler implementation in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

Cisco Talos has observed a threat actor deploying a previously unidentified botnet program Talos is calling “Horabot,” which delivers a known banking trojan and spam tool onto victim machines in a campaign that has been ongoing since at least November 2020.

Cybersecurity researchers have offered a closer look at the RokRAT remote access trojan that's employed by the North Korean state-sponsored actor known as ScarCruft. "RokRAT is a sophisticated remote access trojan (RAT) that has been observed as a critical component within the attack chain, enabling the threat actors to gain unauthorized access, exfiltrate sensitive information, and potentially

Draytek Vigor Routers firmware versions below 3.9.6/4.2.4, Access Points firmware versions below v1.4.0, Switches firmware versions below 2.6.7, and Myvigor firmware versions below 2.3.2 were discovered to use hardcoded encryption keys which allows attackers to bind any affected device to their own account. Attackers are then able to create WCF and DrayDDNS licenses and synchronize them from the website.

A flaw was found in the fixed buffer registration code for io_uring (io_sqe_buffer_register in io_uring/rsrc.c) in the Linux kernel that allows out-of-bounds access to physical memory beyond the end of the buffer. This flaw enables full local privilege escalation.

Categories: Exploits and vulnerabilities Categories: News Tags: Apple Tags: macOS Tags: Ventura 13.4 Tags: Monterey 12.6.6 Tags: Big Sur 11.7.7 Tags: libxpc Tags: SIP Tags: XPC Tags: NVRAM Tags: CVE-2023-32369 Tags: Migraine Microsoft has released details about a vulnerability that can bypass macOS's System Integrity Protection (Read more...) The post Microsoft gives Apple a migraine appeared first on Malwarebytes Labs.

> **Note** > > The official templates of Lima, and the well-known third party products (Colima, Rancher Desktop, and Finch) are *unlikely* to be affected by this issue. ### Impact A virtual machine instance with a malicious disk image could read a single file on the host filesystem, even when no filesystem is mounted from the host. To exploit this issue, the attacker has to embed the target file path (an absolute or a relative path from the instance directory) in a malicious disk image, as the [qcow2 (or vmdk) backing file path string](https://gitlab.com/qemu-project/qemu/-/blob/v8.0.0/docs/interop/qcow2.txt#L23-L34). As Lima refuses to run as the root, it is practically impossible for the attacker to read the entire host disk via `/dev/rdiskN`. Also, practically, the attacker cannot read at least the first 512 bytes (MBR) of the target file. ### Patches Patched in Lima v0.16.0, by prohibiting using a backing file path in the VM base image. ### Workarounds Do not use an untrusted d...