Servidor de e-mails Exim é explorado por hackers desde agosto de 2019


A Agência de Segurança Nacional americana (NSA) divulgou que o grupo de hackers militares russos conhecido como Sandworm Team tem explorado uma aplicação servidora de e-mails desde agosto de 2019. O mesmo grupo interferiu nas eleições presidenciais dos EUA em 2016, desencadeando um ataque de malware devastador no ano seguinte.

O comunicado da agência publicado na quinta-feira (28) foi incomum, visto que a vulnerabilidade crítica no Exim Mail Transfer Agent - geralmente executado em sistemas operacionais do tipo Unix - foi identificada há quase um ano, quando um patch foi lançado. Na época, foi pedido aos usuários atualizarem o Exim para a versão mais recente.

Reprodução

Falha atinge o servidor de e-mails Exim/Foto: Reprodução

A falha que está sendo explorada, CVE-2019-10149, permite que um invasor remoto execute comandos e códigos de sua escolha. Os hackers se aproveitaram do deslize e acessaram a aplicação usando um e-mail criado especificamente para tal. Eles conseguiram instalar programas, desativar configurações de segurança e executar scripts adicionais para explorar a rede.

A NSA não disse, no entanto, qual foi o alvo do ataque dos hackers militares russos. Uma pista teria sido dada por altos funcionários da Agência de Inteligência americana (CIA), que alertaram nos últimos meses sobre agentes do complexo russo Kremlin envolvidos em atividades que podem ameaçar a integridade das eleições presidenciais de novembro.

Via: APNews

 


from Olhar Digital :: Segurança https://ift.tt/3gyHJX2

Comments

Post a Comment

Popular posts from this blog

AR18-312A: JexBoss – JBoss Verify and EXploitation Tool

Image
Original release date: November 08, 2018 Summary JBoss Verify and EXploitation tool (JexBoss) is an open-source tool used by cybersecurity hunt teams (sometimes referred to as “red teams”) and auditors to conduct authorized security assessments. Threat actors use this tool maliciously to test and exploit vulnerabilities in JBoss Application Server (JBoss AS)—now WildFly—and a variety of Java applications and platforms. JexBoss automates all the phases of a cyberattack, making it a powerful and easy-to-use weapon in a threat actor’s cyber arsenal. This report provides a detailed analysis of JexBoss’ functionality, along with detection, response, prevention, and mitigation recommendations. Description JexBoss JexBoss is a tool used to test and exploit vulnerabilities in Java applications and platforms, including the JBoss AS/WildFly web server framework. JexBoss is written in the Python programming language using standard Python libraries. JexBoss is run from the command-line inter...
Keep reading

SB18-141: Vulnerability Summary for the Week of May 14, 2018

Original release date: May 21, 2018 The US-CERT Cyber Security Bulletin provides a summary of new vulnerabilities that have been recorded by the National Institute of Standards and Technology (NIST) National Vulnerability Database (NVD) in the past week. The NVD is sponsored by the Department of Homeland Security (DHS) National Cybersecurity and Communications Integration Center (NCCIC) / United States Computer Emergency Readiness Team (US-CERT). For modified or updated entries, please visit the NVD , which contains historical vulnerability information. The vulnerabilities are based on the CVE vulnerability naming standard and are organized according to severity, determined by the Common Vulnerability Scoring System (CVSS) standard. The division of high, medium, and low severities correspond to the following scores: High - Vulnerabilities will be labeled High severity if they have a CVSS base score of 7.0 - 10.0 Medium - Vulnerabilities will be labeled Medium severity ...
Keep reading

SB18-029: Vulnerability Summary for the Week of January 22, 2018

Original release date: January 29, 2018 The US-CERT Cyber Security Bulletin provides a summary of new vulnerabilities that have been recorded by the National Institute of Standards and Technology (NIST) National Vulnerability Database (NVD) in the past week. The NVD is sponsored by the Department of Homeland Security (DHS) National Cybersecurity and Communications Integration Center (NCCIC) / United States Computer Emergency Readiness Team (US-CERT). For modified or updated entries, please visit the NVD , which contains historical vulnerability information. The vulnerabilities are based on the CVE vulnerability naming standard and are organized according to severity, determined by the Common Vulnerability Scoring System (CVSS) standard. The division of high, medium, and low severities correspond to the following scores: High - Vulnerabilities will be labeled High severity if they have a CVSS base score of 7.0 - 10.0 Medium - Vulnerabilities will be labeled Medium sever...
Keep reading

Learn Python Programming – 7 Courses Video Training Bundle

Image
It's no secret that learning how to code is one of the most important things you can do when it comes to the beginning or furthering practically any career in programming and technology. The only problem a beginner often faces is that there are seemingly countless programming languages to choose from, which makes it exceedingly difficult for aspiring or even seasoned programmers to know which from The Hacker News http://bit.ly/2Ug9eJ8
Keep reading

SB18-043: Vulnerability Summary for the Week of February 5, 2018

Original release date: February 12, 2018 The US-CERT Cyber Security Bulletin provides a summary of new vulnerabilities that have been recorded by the National Institute of Standards and Technology (NIST) National Vulnerability Database (NVD) in the past week. The NVD is sponsored by the Department of Homeland Security (DHS) National Cybersecurity and Communications Integration Center (NCCIC) / United States Computer Emergency Readiness Team (US-CERT). For modified or updated entries, please visit the NVD , which contains historical vulnerability information. The vulnerabilities are based on the CVE vulnerability naming standard and are organized according to severity, determined by the Common Vulnerability Scoring System (CVSS) standard. The division of high, medium, and low severities correspond to the following scores: High - Vulnerabilities will be labeled High severity if they have a CVSS base score of 7.0 - 10.0 Medium - Vulnerabilities will be labeled Medium seve...
Keep reading

SB18-057: Vulnerability Summary for the Week of February 19, 2018

Original release date: February 26, 2018 The US-CERT Cyber Security Bulletin provides a summary of new vulnerabilities that have been recorded by the National Institute of Standards and Technology (NIST) National Vulnerability Database (NVD) in the past week. The NVD is sponsored by the Department of Homeland Security (DHS) National Cybersecurity and Communications Integration Center (NCCIC) / United States Computer Emergency Readiness Team (US-CERT). For modified or updated entries, please visit the NVD , which contains historical vulnerability information. The vulnerabilities are based on the CVE vulnerability naming standard and are organized according to severity, determined by the Common Vulnerability Scoring System (CVSS) standard. The division of high, medium, and low severities correspond to the following scores: High - Vulnerabilities will be labeled High severity if they have a CVSS base score of 7.0 - 10.0 Medium - Vulnerabilities will be labeled Medium seve...
Keep reading

SB18-008: Vulnerability Summary for the Week of January 1, 2018

Original release date: January 08, 2018 The US-CERT Cyber Security Bulletin provides a summary of new vulnerabilities that have been recorded by the National Institute of Standards and Technology (NIST) National Vulnerability Database (NVD) in the past week. The NVD is sponsored by the Department of Homeland Security (DHS) National Cybersecurity and Communications Integration Center (NCCIC) / United States Computer Emergency Readiness Team (US-CERT). For modified or updated entries, please visit the NVD , which contains historical vulnerability information. The vulnerabilities are based on the CVE vulnerability naming standard and are organized according to severity, determined by the Common Vulnerability Scoring System (CVSS) standard. The division of high, medium, and low severities correspond to the following scores: High - Vulnerabilities will be labeled High severity if they have a CVSS base score of 7.0 - 10.0 Medium - Vulnerabilities will be labeled Medium sever...
Keep reading

Vulnerability Summary for the Week of March 2, 2020

Original release date: March 9, 2020 The CISA Weekly Vulnerability Summary Bulletin is created using information from the NIST NVD . In some cases, the vulnerabilities in the Bulletin may not yet have assigned CVSS scores. Please visit NVD for updated vulnerability entries, which include CVSS scores once they are available.   High Vulnerabilities Primary Vendor -- Product Description Published CVSS Score Source & Patch Info apple -- multiple_products   A denial of service issue was addressed with improved input validation. 2020-02-28 7.8 CVE-2019-8741 MISC MISC MISC MISC MISC MISC MISC centreon -- centreon   An issue was discovered in Centreon before 2.8.30, 18.10.8, 19.04.5, and 19.10.2. SQL Injection exists via the include/monitoring/status/Hosts/xml/hostXML.php instance parameter. 2020-03-05 7.5 CVE-2019-17647 CONFIRM CONFIRM CONFIRM MISC CONFIRM CONFIRM centreon -- centreon   Centreon 19.10 allows remote authen...
Keep reading

STJ se restabelece após ransomware, mas PF investiga cópia de dados

Image
Os estragos causados pelo ataque com ransomware ao Superior Tribunal de Justiça (STJ) ainda não são totalmente conhecidos. A Polícia Federal assumiu a investigação do caso, não só para compreender a extensão dos danos, como para averiguar o acesso aos arquivos, que pode incluir até mesmo uma cópia indevida dos dados.Segundo comunicado do STJ, aos poucos os sistemas começam a ser retomados após o ataque. A retomada começou na terça-feira (10), com a retomada de algumas das funcionalidades mais acessadas do portal. As centrais telefônicas voltaram a operar parcialmente na quarta-feira (11) e em sua totalidade na quinta (12). Agora, o Tribunal também informa que a restauração dos sistemas de informática já está praticamente finalizada.O STJ diz que há ainda dois pontos a serem resolvidos. Um deles é o Sistema Integração, que deve ser restabelecido durante o fim de semana. Além disso, até segunda-feira (16), a Secretaria de Tecnologia da Informação e Comunicação deve finalizar a disponibi...
Keep reading

LibSSH Flaw Allows Hackers to Take Over Servers Without Password

Image
A four-year-old severe vulnerability has been discovered in the Secure Shell (SSH) implementation library known as Libssh that could allow anyone to completely bypass authentication and gain unfettered administrative control over a vulnerable server without requiring a password. The security vulnerability, tracked as CVE-2018-10933, is an authentication-bypass issue that was introduced in from The Hacker News https://ift.tt/2NJHOaM
Keep reading