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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.
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June 2, 2023
Severity High Analysis Summary Shuckworm APT – aka Actinium, Armageddon, Primitive Bear, Gamaredon, and Trident Ursa – is a Russia-backed advanced persistent threat (APT) that has […]June 2, 2023Severity High Analysis Summary StormKitty information stealer is designed to compromise sensitive data from infected systems, such as login credentials, passwords, cryptocurrency wallets, and other valuable […]June 2, 2023Severity High Analysis Summary Tofsee malware has been around since 2016. Once installed on a compromised computer, it can be used to send spam emails and […]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
June 2, 2023Severity High Analysis Summary Shuckworm APT – aka Actinium, Armageddon, Primitive Bear, Gamaredon, and Trident Ursa – is a Russia-backed advanced persistent threat (APT) that has […]June 2, 2023Severity High Analysis Summary StormKitty information stealer is designed to compromise sensitive data from infected systems, such as login credentials, passwords, cryptocurrency wallets, and other valuable […]June 2, 2023Severity High Analysis Summary Tofsee malware has been around since 2016. Once installed on a compromised computer, it can be used to send spam emails and […]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 Alert – Nanocore Rat – Active IOCs
March 26, 2022Rewterz Threat Advisory – CVE-2022-21820 – NVIDIA DCGM Vulnerability
March 28, 2022
Severity
Medium
Analysis Summary
CVE-2021-4148
Linux Kernel is vulnerable to a denial of service, caused by improper implementation of block_invalidatepage(). By sending a specially-crafted request, a local attacker could exploit this vulnerability to cause a denial of service.
CVE-2021-4149
Linux Kernel is vulnerable to a denial of service, caused by an improper lock operation in btrfs_alloc_tree_b in fs/btrfs/extent-tree.c. By sending a specially-crafted request, a local authenticated attacker could exploit this vulnerability to cause a denial of service.
Impact
Denial of Service
Indicator Of Compromise
CVE
- CVE-2021-4148
- CVE-2021-4149
Affected Vendors
Linux
Affected Products
- Linux Kernel 5.14.15
- Linux Kernel 5.15
Remediation
Upgrade to the latest version of Linux Kernel, available from the Kernel Web site.