PT-2021-6611 · Xen +1 · Xen +1

Name of the Vulnerable Software and Affected Versions: Xen affected versions not specified Description: The issue is related to an inadequate grant-v2 status frames array bounds check in the Xen hypervisor. This allows a guest to potentially cause a denial of service by exploiting the vulnerabili...

CVE-2021-28697

grant table v2 status pages may remain accessible after de-allocation Guest get permitted access to certain Xen-owned pages of memory. The majority of such pages remain allocated / associated with a guest for its entire lifetime. Grant table v2 status pages, however, get de-allocated when a guest...

PT-2021-6610 · Xen +1 · Xen +1

Name of the Vulnerable Software and Affected Versions: Xen affected versions not specified Description: The issue is related to long running loops in grant table handling. Xen maintains information on grant mappings a domain may create to map grants offered by other domains. When carrying out...

CVE-2021-28699

inadequate grant-v2 status frames array bounds check The v2 grant table interface separates grant attributes from grant status. That is, when operating in this mode, a guest has two tables. As a result, guests also need to be able to retrieve the addresses that the new status tracking table can b...

CVE-2021-28698

long running loops in grant table handling In order to properly monitor resource use, Xen maintains information on the grant mappings a domain may create to map grants offered by other domains. In the process of carrying out certain actions, Xen would iterate over all such entries, including ones...

CVE-2021-28699

inadequate grant-v2 status frames array bounds check The v2 grant table interface separates grant attributes from grant status. That is, when operating in this mode, a guest has two tables. As a result, guests also need to be able to retrieve the addresses that the new status tracking table can b...

long running loops in grant table handling

ISSUE DESCRIPTION In order to properly monitor resource use, Xen maintains information on the grant mappings a domain may create to map grants offered by other domains. In the process of carrying out certain actions, Xen would iterate over all such entries, including ones which aren't in use...

grant table v2 status pages may remain accessible after de-allocation

ISSUE DESCRIPTION Guest get permitted access to certain Xen-owned pages of memory. The majority of such pages remain allocated / associated with a guest for its entire lifetime. Grant table v2 status pages, however, get de-allocated when a guest switched back from v2 to v1. The freeing of such...

inadequate grant-v2 status frames array bounds check

ISSUE DESCRIPTION The v2 grant table interface separates grant attributes from grant status. That is, when operating in this mode, a guest has two tables. As a result, guests also need to be able to retrieve the addresses that the new status tracking table can be accessed through. For 32-bit gues...

Xen 竞争条件问题漏洞

Xen is an open source virtual machine monitor product from the University of Cambridge, UK. The product enables different and incompatible operating systems to run on the same computer and supports runtime migration to ensure uptime and avoid downtime. Xen has a security vulnerability that can be...

Xen 安全漏洞

Xen is an open source virtual machine monitor product from the University of Cambridge, UK. The product enables different and incompatible operating systems to run on the same computer and supports runtime migration to ensure uptime and avoid downtime. Xen has a security vulnerability that can be...

Xen 安全漏洞

Xen is an open source virtual machine monitor product from the University of Cambridge, UK. The product enables different and incompatible operating systems to run on the same computer and supports runtime migration to ensure uptime and avoid downtime. effect is a software package for adding...

Metasploit Wrap-Up

Print Driver PrivEsc If you attended DEF CON last week, you may have seen this talk on print driver vulnerabilities from Metasploit community contributor Jacob Baines. In the spirit of Friday the 13th, we're highlighting some of these "print nightmares" again, in the form of two new Metasploit...

Code injection

If a user had granted a permission to a webpage and saved that grant, any webpage running on the same host - irrespective of scheme or port - would be granted that permission. This bug only affects Firefox for Android. Other operating systems are unaffected.. This vulnerability affects Firefox 90...

CVE-2021-29971

If a user had granted a permission to a webpage and saved that grant, any webpage running on the same host - irrespective of scheme or port - would be granted that permission. This bug only affects Firefox for Android. Other operating systems are unaffected.. This vulnerability affects Firefox 90...

Smart car chargers. Plug-n-play for hackers?

Over the last 18 months, we’ve been investigating the security of smart electric vehicle chargers. These allow the owner to remotely monitor and manage the charge state, speed and timing of their car charger, among many functions. We bought 6 different brands of chargers and also reviewed securit...

Mozilla Firefox < 90.0

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 90.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-28 advisory. - If a user had granted a permission to a webpage and saved that grant, any webpage running on the same host -...

Security Vulnerabilities fixed in Firefox 90 — Mozilla

A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. This bug only affected Firefox when accessibility was enabled. If a user had granted a permission to a webpage and saved that grant, any webpage running on the same host - irrespecti...

MDT AutoSave SQL注入漏洞

MDT AutoSave is a software application. It provides an automated change management function. MDT AutoSave suffers from a SQL injection vulnerability that originates from an attacker being able to utilize SQL commands to create a new user on the system and update the user's privileges, granting th...

Resource Exhaustion in Spring Security

Spring Security versions 5.5.x prior to 5.5.1, 5.4.x prior to 5.4.7, 5.3.x prior to 5.3.10 and 5.2.x prior to 5.2.11 are susceptible to a Denial-of-Service DoS attack via the initiation of the Authorization Request in an OAuth 2.0 Client Web and WebFlux application. A malicious user or attacker c...