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March 21, 2023Severity Medium Analysis Summary Rhadamanthys is a type of malware known as a stealer, which is designed to steal sensitive information from infected computers. It was […]March 21, 2023Severity High Analysis Summary The Mirai botnet is a type of malware that infects Internet of Things (IoT) devices, such as routers, security cameras, and other […]March 21, 2023Severity High Analysis Summary LockBit ransomware takes as little as five minutes to deploy the encryption routine on target systems once it lands on the victim […]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.
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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 21, 2023Severity Medium Analysis Summary Rhadamanthys is a type of malware known as a stealer, which is designed to steal sensitive information from infected computers. It was […]March 21, 2023Severity High Analysis Summary The Mirai botnet is a type of malware that infects Internet of Things (IoT) devices, such as routers, security cameras, and other […]March 21, 2023Severity High Analysis Summary LockBit ransomware takes as little as five minutes to deploy the encryption routine on target systems once it lands on the victim […]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 – Agent Tesla Email Campaign Stealing Information
June 17, 2019Rewterz Threat Advisory – CVE-2019-1040 – Windows NTLM Tampering Vulnerability
June 18, 2019
Severity
Medium
Analysis Summary
1) An integer overflow error related to the “tcp_shifted_skb()” function (net/ipv4/tcp_input.c) when handling TCP Selective Acknowledgement (SACK) segments with minimum TCP MSS values can be exploited to cause a crash via specially crafted SACKs.
2) An error related to the “tcp_fragment()” function (net/ipv4/tcp_output.c) can be exploited to exhaust available memory resources via specially crafted SACKs.
3) An error related to the “tcp_mtu_probing()” function (net/ipv4/tcp_timer.c) when handling minimum TCP MSS values can be exploited to cause a DoS condition.
CVE-2019-11479
CVE-2019-11478
CVE-2019-11477
Impact
Denial of Service
Affected Vendors
Linux
Affected Products
- Linux Kernel 3.16.x
- Linux Kernel 4.4.x
- Linux Kernel 4.9.x
- Linux Kernel 4.14.x
- Linux Kernel 4.19.x
- Linux Kernel 5.1.x
Remediation
Update to a fixed version if available.
Versions 5.1.x:
Update to version 5.1.11.
Versions 4.19.x:
Update to version 4.19.52.
Versions 4.14.x:
Update to version 4.14.127.
Versions 4.9.x:
Update to version 4.9.182.
Versions 4.4.x:
Update to version 4.4.182.
Versions 3.16.x:
No official solution is currently available.