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Rewterz Threat Alert – Russian APT Gamaredon Using Template Injection

April 1, 2021
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Rewterz Threat Advisory – ICS: Rockwell Automation FactoryTalk AssetCentre Multiple Vulnerabilities

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Rewterz Threat Advisory – Citrix Hypervisor Security Update

Severity

High

Analysis Summary

CVE-2021-28038

An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. 

CVE-2021-28688

A malicious or buggy frontend driver may be able to cause resource leaksfrom the corresponding backend driver.  This can result in a host-wideDenial of Service.

Impact

Denial of Service

Affected Vendors

Citrix

Affected Products

Citrix Hypervisor all versions

Remediation

Citrix recommends users to apply patches as soon as possible.

https://support.citrix.com/article/CTX306565

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