Why You Should Consider QEMU Live Patching

Sysadmins know what the risks are of running unpatched services. Given the choice, and unlimited resources, most hardworking administrators will ensure that all systems and services are patched consistently. But things are rarely that simple. Technical resources are limited, and patching can ofte...

Veeam Disaster Recovery Orchestrator limitations with VMware Cloud Offerings

Overview VMware Cloud Verified offerings exist in various forms. This article highlights specific considerations when working with Veeam Recovery Orchestrator, Veeam Backup & Replication, and Veeam ONE for disaster recovery orchestration purposes. Depending on the vendor-specific VMware solution...

Design/Logic Flaw

check-spelling is a github action which provides CI spell checking. In affected versions and for a repository with the check-spelling action enabled that triggers on pullrequesttarget or schedule, an attacker can send a crafted Pull Request that causes a GITHUBTOKEN to be exposed. With the...

SUSE-SU-2021:2924-1 Security update for xen

This update for xen fixes the following issues: Security issues fixed: - CVE-2021-28693: xen/arm: Boot modules are not scrubbed bsc1186428 - CVE-2021-28692: xen: inappropriate x86 IOMMU timeout detection / handling bsc1186429 - CVE-2021-0089: xen: Speculative Code Store Bypass bsc1186433 -...

Exploit for Expression Language Injection in Atlassian Confluence_Data_Center

CVE-2021-26084 Proof of concept for CVE-2021-26084. Confluen...

Ubuntu 18.04 LTS / 20.04 LTS : Firefox vulnerabilities (USN-5011-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5011-1 advisory. Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could...

Authentication Bypass in ASG and ProxySG

Summary The Symantec Advanced Secure Gateway ASG and ProxySG web management consoles are susceptible to an authentication bypass vulnerability. An unauthenticated attacker can execute arbitrary CLI commands, view/modify the appliance configuration and policy, and shutdown/restart the appliance...

CVE-2021-31618

Apache HTTP Server protocol handler for the HTTP/2 protocol checks received request headers against the size limitations as configured for the server and used for the HTTP/1 protocol as well. On violation of these restrictions and HTTP response is sent to the client with a status code indicating...

CVE-2021-31618 NULL pointer dereference on specially crafted HTTP/2 request

Apache HTTP Server protocol handler for the HTTP/2 protocol checks received request headers against the size limitations as configured for the server and used for the HTTP/1 protocol as well. On violation of these restrictions and HTTP response is sent to the client with a status code indicating...

CVE-2021-28689

x86: Speculative vulnerabilities with bare non-shim 32-bit PV guests 32-bit x86 PV guest kernels run in ring 1. At the time when Xen was developed, this area of the i386 architecture was rarely used, which is why Xen was able to use it to implement paravirtualisation, Xen's novel approach to...

The Supreme Court Narrowed the CFAA

In a 6-3 ruling, the Supreme Court just narrowed the scope of the Computer Fraud and Abuse Act: In a ruling delivered today, the court sided with Van Buren and overturned his 18-month conviction. In a 37-page opinion written and delivered by Justice Amy Coney Barrett, the court explained that the...

Ubuntu 16.04 LTS : GNU C Library vulnerabilities (USN-4954-1)

The remote Ubuntu 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4954-1 advisory. Jason Royes and Samuel Dytrych discovered that the memcpy implementation for 32 bit ARM processors in the GNU C Library contained an integer underflow...

Citrix Receiver Support for NDS (Novell Directory Structure) Authentication in a Citrix Environment

This article is intended for Citrix administrators and technical teams only. Non-admin users must contact their company’s Help Desk/IT support team and can refer to CTX297149 for more information. This article provides information onCitrix Receiver Support for NDS Novell Directory Structure...

Default configuration

A vulnerability was found in postgresql versions 11.x prior to 11.3. The Windows installer for BigSQL-supplied PostgreSQL does not lock down the ACL of the binary installation directory or the ACL of the data directory; it keeps the inherited ACL. In the default configuration, an attacker having...

Unable to copy files from sessions to local Mac device using clipboard virtual channel

Clipboard virtual channel does not support copying afile or a folderfrom a session to your local device and vice versa...

Finding Results at the Intersection of Security and Engineering

As vice president and head of global security at ActiveCampaign, I’m fortunate to be able to draw on a multitude of experiences and successes in my career. I started in general network security, where I was involved in pen testing and security research. I worked at several multibillion-dollar Saa...

Solaris SunSSH libpam buffer overflow

Added: 01/08/2021 Background SunSSH is a fork of OpenSSH for Solaris. It provides remote login capability on Solaris platforms. Problem A buffer overflow vulnerability in libpam could allow a remote attacker to execute arbitrary commands by sending a specially crafted authentication request to...

Xen out of bounds event channels available to 32-bit x86 domains DoS (XSA-342)

A denial of service DoS vulnerability exists in Xen servers on a 32-bit x86 domains out of bounds event channels due to improper restrictions on limits on the number of usable event channels. The so called 2-level event channel model imposes different limits on the number of usable event channels...

Design/Logic Flaw

A vulnerability has been reported to affect earlier QNAP devices running QTS 4.3.4 to 4.3.6. Caused by improper limitations of a pathname to a restricted directory, this vulnerability allows for renaming arbitrary files on the target system, if exploited. QNAP have already fixed this vulnerabilit...

Indistinguishability Obfuscation

Quanta magazine recently published a breathless article on indistinguishability obfuscation -- calling it the "crown jewel of cryptography" -- and saying that it had finally been achieved, based on a recently published paper. I want to add some caveats to the discussion. Basically, obfuscation...