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 News

When it comes to spam, we usually think of a bunch of absolutely irrelevant advertising letters, which antispam engines filter out with no trouble at all. However, this is far from the most unpleasant thing that can fall into your mailbox. Sometimes spam is used to carry out a DDoS attack on corporate email addresses,   show more ...

and the victim gets bombarded with completely legitimate emails that dont raise any suspicion of a standard antispam engine. Registration confirmations attack In order to perform a mail bomb attack, attackers can exploit the registration mechanisms on the web resources of totally unrelated companies. Using automation tools, they register on thousands of services from different countries using the victims email address. As a result, a huge number of confirmations, links to activate your account, and similar letters end up in your mailbox. Moreover, since theyre sent by legitimate mail servers with a good reputation, the antispam engine considers them legal and doesnt block them. Examples of registration confirmation emails used for DDoS attacks on corporate email addresses As a target the attackers usually choose an address thats crucial for the companys work — something thats used to communicate with clients or partners; for example, a mailbox of the sales department, technical support, or a banks address to which applications for mortgage loans are sent. An attack can last for days, and the plethora of emails  simply overload the victims mail server and paralyze the work of the attacked department. To successfully protect a mailbox from such an attack, a more sophisticated tool is required. As one of the approaches to protection against mail bombs, we propose using the personalized content filtering module built into our updated Kaspersky Secure Mail Gateway In particular, in the above example of an attack through registration mechanisms, the operator can block letters based on the presence of the word registration in various languages in the Subject field (Registrace | Registracija | Registration | Registrierung | Regisztráció). As a result, emails will be automatically sent to quarantine without reaching the inbox and overloading the mail server. Personalized mail filter settings In Kaspersky Secure Mail Gateway version 2.1 weve added the following options for filtering incoming and outgoing mail: by letter size; by attachment types and names; by sender — you can specify a specific sender address or a regular expression; by recipients (including hidden ones); by the presence of certain text in the body of the letter (keywords and regular expressions can be added to the dictionary); by the presence of text in the subject of the letter – by keywords, using masks and regular expressions, indicating specific senders; by X-headers.   Flexible filtering of business mailings The new capabilities of our solution can be used not only to protect against email bombs attacks. They can be used, for example, for flexible configuration of B2B-mailout filtering. Not all employees perceive all kinds of business mailings in the same way: for some it makes sense to delve into offers to purchase electronic components; for others such advertisements just clog up their inboxes, while they consider various invitations to participate in conferences or conduct seminars extremely valuable. Therefore, completely blocking legitimate business mailouts isnt an option. But on the other hand, its also not worth allowing their uncontrolled delivery: someone will always be dissatisfied. Therefore, Kaspersky Secure Mail Gateway doesnt categorize such letters as spam, but allows you to configure their flexible filtering by senders, recipients, text in the subject or body of the letter, and so on. You can learn more about Kaspersky Secure Mail Gateway, part of Kaspersky Security for Mail Servers solution on our corporate website.

 Trends, Reports, Analysis

Most compliance leaders tend to focus on building an ethical culture in their organizations to improve employee behavior, but it has a limited impact on addressing uncertainty about how to be compliant, according to a survey by Gartner.

 Trends, Reports, Analysis

The ransomware landscape has undergone significant changes in Q1 2024, with major shifts in the behavior of Ransomware-as-a-Service (RaaS) groups, according to GuidePoint Security's GRIT Q1 2024 Ransomware Report.

 Govt., Critical Infrastructure

Doctors, clinics and other providers are prohibited from disclosing protected health information related to lawful reproductive healthcare, according to a final rule released Monday by federal regulators to "strengthen" HIPAA privacy.

 Security Tips and Advice

HHS' Office for Civil Rights in new "frequently asked questions" guidance issued Friday night said it has not yet received breach reports from Change Healthcare, UHG, or any other affected covered entities pertaining to the incident.

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Nmap is a utility for port scanning large networks, although it works fine for single hosts. Sometimes you need speed, other times you may need stealth. In some cases, bypassing firewalls may be required. Not to mention the fact that you may want to scan different protocols (UDP, TCP, ICMP, etc.). Nmap supports   show more ...

Vanilla TCP connect() scanning, TCP SYN (half open) scanning, TCP FIN, Xmas, or NULL (stealth) scanning, TCP ftp proxy (bounce attack) scanning, SYN/FIN scanning using IP fragments (bypasses some packet filters), TCP ACK and Window scanning, UDP raw ICMP port unreachable scanning, ICMP scanning (ping-sweep), TCP Ping scanning, Direct (non portmapper) RPC scanning, Remote OS Identification by TCP/IP Fingerprinting, and Reverse-ident scanning. Nmap also supports a number of performance and reliability features such as dynamic delay time calculations, packet timeout and retransmission, parallel port scanning, detection of down hosts via parallel pings.

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Debian Linux Security Advisory 5673-1 - Charles Fol discovered that the iconv() function in the GNU C library is prone to a buffer overflow vulnerability when converting strings to the ISO-2022-CN-EXT character set, which may lead to denial of service (application crash) or the execution of arbitrary code.

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Ubuntu Security Notice 6746-1 - It was discovered that Google Guest Agent and Google OS Config Agent incorrectly handled certain JSON files. An attacker could possibly use this issue to cause a denial of service.

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A remote SQL injection vulnerability exists in FortiNet FortiClient EMS (Endpoint Management Server) versions 7.2.0 through 7.2.2 and 7.0.1 through 7.0.10. FortiClient EMS serves as an endpoint management solution tailored for enterprises, offering a centralized platform for overseeing enrolled endpoints. The SQL   show more ...

injection vulnerability is due to user controller strings which can be sent directly into database queries. FcmDaemon.exe is the main service responsible for communicating with enrolled clients. By default it listens on port 8013 and communicates with FCTDas.exe which is responsible for translating requests and sending them to the database. In the message header of a specific request sent between the two services, the FCTUID parameter is vulnerable to SQL injection. It can be used to enable the xp_cmdshell which can then be used to obtain unauthenticated remote code execution in the context of NT AUTHORITYSYSTEM. Upgrading to either 7.2.3, 7.0.11 or above is recommended by FortiNet. It should be noted that in order to be vulnerable, at least one endpoint needs to be enrolled / managed by FortiClient EMS for the necessary vulnerable services to be available.

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Suricata is a network intrusion detection and prevention engine developed by the Open Information Security Foundation and its supporting vendors. The engine is multi-threaded and has native IPv6 support. It's capable of loading existing Snort rules and signatures and supports the Barnyard and Barnyard2 tools.

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Debian Linux Security Advisory 5672-1 - Several vulnerabilities have been discovered in the OpenJDK Java runtime, which may result in denial of service or information disclosure.

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GitKraken GitLens versions prior to 14.0.0 allow an untrusted workspace to execute git commands. A repo may include its own .git folder including a malicious config file to execute arbitrary code. Tested against VSCode 1.87.2 with GitLens 13.6.0 on Ubuntu 22.04 and Windows 10.

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Ubuntu Security Notice 6728-3 - USN-6728-1 fixed vulnerabilities in Squid. The fix for CVE-2023-5824 caused Squid to crash in certain environments on Ubuntu 20.04 LTS and was disabled in USN-6728-2. The problematic fix for CVE-2023-5824 has now been corrected and reinstated in this update.

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This Metasploit module creates a vsix file which can be installed in Visual Studio Code as an extension. At activation/install, the extension will execute a shell or two. Tested against VSCode 1.87.2 on Ubuntu 22.04.

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Debian Linux Security Advisory 5671-1 - Several vulnerabilities have been discovered in the OpenJDK Java runtime, which may result in denial of service or information disclosure.

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A remote code execution vulnerability in Gambio online webshop versions 4.9.2.0 and below allows remote attackers to run arbitrary commands via an unauthenticated HTTP POST request. The identified vulnerability within Gambio pertains to an insecure deserialization flaw, which ultimately allows an attacker to execute   show more ...

remote code on affected systems. The insecure deserialization vulnerability in Gambio poses a significant risk to affected systems. As it allows remote code execution, adversaries could exploit this flaw to execute arbitrary commands, potentially resulting in complete system compromise, data exfiltration, or unauthorized access to sensitive information.

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This Metasploit module exploits two vulnerabilities in Palo Alto Networks PAN-OS that allow an unauthenticated attacker to create arbitrarily named files and execute shell commands. Configuration requirements are PAN-OS with GlobalProtect Gateway or GlobalProtect Portal enabled and telemetry collection on (default).   show more ...

Multiple versions are affected. Payloads may take up to one hour to execute, depending on how often the telemetry service is set to run.

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Debian Linux Security Advisory 5670-1 - Multiple security issues were discovered in Thunderbird, which could result in denial of service or the execution of arbitrary code.

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Ubuntu Security Notice 6744-2 - USN-6744-1 fixed a vulnerability in Pillow. This update provides the corresponding updates for Pillow in Ubuntu 20.04 LTS. Hugo van Kemenade discovered that Pillow was not properly performing bounds checks when processing an ICC file, which could lead to a buffer overflow. If a user or   show more ...

automated system were tricked into processing a specially crafted ICC file, an attacker could possibly use this issue to cause a denial of service or execute arbitrary code.

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Ubuntu Security Notice 6744-1 - Hugo van Kemenade discovered that Pillow was not properly performing bounds checks when processing an ICC file, which could lead to a buffer overflow. If a user or automated system were tricked into processing a specially crafted ICC file, an attacker could possibly use this issue to cause a denial of service or execute arbitrary code.

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Ubuntu Security Notice 6738-1 - Fabian Bäumer, Marcus Brinkmann, and Joerg Schwenk discovered that LXD incorrectly handled the handshake phase and the use of sequence numbers in SSH Binary Packet Protocol. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to bypass integrity checks.

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Red Hat Security Advisory 2024-1959-03 - An update for shim is now available for Red Hat Enterprise Linux 7. Issues addressed include buffer overflow, bypass, integer overflow, and out of bounds read vulnerabilities.

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Red Hat Security Advisory 2024-1948-03 - An update for Red Hat Build of Apache Camel 3.18 for Quarkus 2.13 is now available. The purpose of this text-only errata is to inform you about the enhancements that improve your developer experience and ensure the security and stability of your products. Red Hat Product   show more ...

Security has rated this update as having a security impact of Important. Issues addressed include denial of service and server-side request forgery vulnerabilities.

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The Russia-linked nation-state threat actor tracked as APT28 weaponized a security flaw in the Microsoft Windows Print Spooler component to deliver a previously unknown custom malware called GooseEgg. The post-compromise tool, which is said to have been used since at least June 2020 and possibly as early as April 2019, leveraged a now-patched flaw that allowed for

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The U.S. Department of State on Monday said it's taking steps to impose visa restrictions on 13 individuals who are allegedly involved in the development and sale of commercial spyware or who are immediately family members of those involved in such businesses. "These individuals have facilitated or derived financial benefit from the misuse of this technology, which

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In the high-stakes world of cybersecurity, the battleground has shifted. Supply chain attacks have emerged as a potent threat, exploiting the intricate web of interconnected systems and third-party dependencies to breach even the most formidable defenses. But what if you could turn the tables and proactively hunt these threats before they wreak havoc? We invite you to join us for an

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European Police Chiefs said that the complementary partnership between law enforcement agencies and the technology industry is at risk due to end-to-end encryption (E2EE). They called on the industry and governments to take urgent action to ensure public safety across social media platforms. "Privacy measures currently being rolled out, such as end-to-end encryption, will stop tech companies

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Cybersecurity breaches can be devastating for both individuals and businesses alike. While many people tend to focus on understanding how and why they were targeted by such breaches, there's a larger, more pressing question: What is the true financial impact of a cyberattack? According to research by Cybersecurity Ventures, the global cost of cybercrime is projected to reach

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German authorities said they have issued arrest warrants against three citizens on suspicion of spying for China. The full names of the defendants were not disclosed by the Office of the Federal Prosecutor (aka Generalbundesanwalt), but it includes Herwig F., Ina F., and Thomas R. "The suspects are strongly suspected of working for a Chinese secret service since an unspecified

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Researchers have identified a dependency confusion vulnerability impacting an archived Apache project called Cordova App Harness. Dependency confusion attacks take place owing to the fact that package managers check the public repositories before private registries, thus allowing a threat actor to publish a malicious package with the same name to a public package repository. This&

2024-04
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