#linux

### Summary When using an ACL on a device connected to a bridge, Incus generates nftables rules for local services (DHCP, DNS...) that partially bypass security options `security.mac_filtering`, `security.ipv4_filtering` and `security.ipv6_filtering`. This can lead to DHCP pool exhaustion and opens the door for other attacks. ### Details In commit a7c33301738aede3c035063e973b1d885d9bac7c, the following rules are added at the top of the bridge input chain: iifname "{{.hostName}}" ether type ip ip saddr 0.0.0.0 ip daddr 255.255.255.255 udp dport 67 accept iifname "{{.hostName}}" ether type ip6 ip6 saddr fe80::/10 ip6 daddr ff02::1:2 udp dport 547 accept iifname "{{.hostName}}" ether type ip6 ip6 saddr fe80::/10 ip6 daddr ff02::2 icmpv6 type 133 accept However, these rules accept packets that should be filtered and maybe dropped by later rules in the "MAC filtering" snippet: iifname "{{.hostName}}" ether type arp arp saddr ether != {{.hwAddr}} drop iifname "{{.hostName}}" ether...

Kali Linux 2025.1c includes a new signing key to fix update errors, adds new tools, a redesigned menu with MITRE ATT&CK, and major system upgrades.

View CSAF 1. EXECUTIVE SUMMARY CVSS v4 9.3 ATTENTION: Exploitable remotely/Low attack complexity Vendor: MICROSENS Equipment: NMP Web+ Vulnerabilities: Use of Hard-coded, Security-relevant Constants, Insufficient Session Expiration, Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to gain system access, overwrite files or execute arbitrary code. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of NMP Web+ are affected: NMP Web+: Version 3.2.5 and prior 3.2 VULNERABILITY OVERVIEW 3.2.1 USE OF HARD-CODED, SECURITY-RELEVANT CONSTANTS CWE-547 The affected products could allow an unauthenticated attacker to generate forged JSON Web Tokens (JWT) to bypass authentication. CVE-2025-49151 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N). A CVSS v4 score h...

ShortLeash backdoor, used in the China-linked LapDogs campaign since 2023, enables stealth access, persistence, and data theft via compromised SOHO routers and fake certs.

North Korean hackers deploy PylangGhost malware through fake crypto job interviews targeting blockchain professionals with phishing and remote access tools.

Cybersecurity researchers have uncovered two local privilege escalation (LPE) flaws that could be exploited to gain root privileges on machines running major Linux distributions. The vulnerabilities, discovered by Qualys, are listed below - CVE-2025-6018 - LPE from unprivileged to allow_active in SUSE 15's Pluggable Authentication Modules (PAM) CVE-2025-6019 - LPE from allow_active to root in

In this edition, Thor shares how a week off with a new car turned into a crash course in modern vehicle tech. Surprisingly, it offers many parallels to cybersecurity usability.

Learn how the North Korean-aligned Famous Chollima is using the a new Python-based RAT, "PylangGhost," to target cryptocurrency and blockchain jobseekers in a campaign affecting users primarily in India.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday placed a security flaw impacting the Linux kernel in its Known Exploited Vulnerabilities (KEV) catalog, stating it has been actively exploited in the wild. The vulnerability, CVE-2023-0386 (CVSS score: 7.8), is an improper ownership bug in the Linux kernel that could be exploited to escalate privileges on susceptible

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global). View CSAF 1. EXECUTIVE SUMMARY CVSS v4 8.7 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: SIMATIC S7-1500 CPU family Vulnerabilities: Missing Encryption of Sensitive Data, Out-of-bounds Read, Use After Free, Stack-based Buffer Overflow, Incorrect Provision of Specified Functionality, Out-of-bounds Write, Incorrect Calculation of Buffer Size, Heap-based Buffer Overflow, External Control of File Name or Path, Uncontrolled Resource Consumption, Improper Input Validation, Truncation of Security-relevant Information, Missing Critical Step in Authentication, Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), ...