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March 17, 2023Severity High Analysis Summary Chaos is a customizable ransomware builder that emerged on June 9 2021 (in underground forums) by falsely marketing itself as the .NET […]March 17, 2023Severity High Analysis Summary CVE-2023-26361 CVSS:4.9 Adobe ColdFusion could allow a remote authenticated attacker to traverse directories on the system. An attacker could send a specially […]March 17, 2023Severity Medium Analysis Summary Ursnif banking trojan also known as Gozi and Dreambot has been around for more than 10 years. It gained popularity in 2015 […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Platform
Managed Security Services
Managed Penetration Testing
Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.
Resources
March 17, 2023Severity High Analysis Summary Chaos is a customizable ransomware builder that emerged on June 9 2021 (in underground forums) by falsely marketing itself as the .NET […]March 17, 2023Severity High Analysis Summary CVE-2023-26361 CVSS:4.9 Adobe ColdFusion could allow a remote authenticated attacker to traverse directories on the system. An attacker could send a specially […]March 17, 2023Severity Medium Analysis Summary Ursnif banking trojan also known as Gozi and Dreambot has been around for more than 10 years. It gained popularity in 2015 […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Rewterz Threat Advisory – CVE-2018-0470 – Cisco IOS XE HTTP Packet Processing Denial of Service Vulnerability
September 27, 2018Rewterz Threat Advisory – CVE-2017-13695, CVE-2018-5873, CVE-2018-16658 – Oracle VM Server for x86 update for kernel-uek
October 1, 2018
Malicious local users may gain escalated privileges by exploiting a vulnerability in the Linux Kernel.
IMPACT: HIGH
PUBLISH DATE: 28-09-2018
OVERVIEW
A security flaw in the Linux Kernel may be exploited to induce Denial of Service, Use-After-Free condition or to gain privileges. Updates are available for all the affected versions of the product.
ANALYSIS
A flaw was detected in the Linux Kernel by some researchers. When this vulnerability is exploited by an attacker, it may induce a Denial of Service condition. However, exploiting this vulnerability requires time because the vulnerability can only be triggered by processes that run for a long enough time to cause the overflow for a reference counter.
The vmacache_flush_all() function in mm/vmacache.c mishandles sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations.
Exploitation of this vulnerability may have high impacts on the confidentiality, integrity and availability of the compromised device.
AFFECTED PRODUCTS
Linux Kernel 3.16.x
Linux Kernel 4.4.x
Linux Kernel 4.9.x
Linux Kernel 4.14.x
Linux Kernel 4.18.x
UPDATE
Update the following affected versions according to the suggested updates available.
Versions 4.18.x:
Update to version 4.18.9
Versions 4.14.x:
Update to version 4.14.71
Versions 4.9.x:
Update to version 4.9.128
Versions 4.4.x:
Update to version 4.4.157
Versions 3.16.x:
Update to version 3.16.58.
If you think you are a victim of a cyber-attack, immediately send an e-mail to info@rewterz.com.