edk2 security, bug fix, and enhancement update

20200602gitca407c7246bf-3.el8 - edk2-UefiCpuPkg-PiSmmCpuDxeSmm-pause-in-WaitForSemaphore-.patch bz1861718 - Resolves: bz1861718 Very slow boot when overcommitting CPU 20200602gitca407c7246bf-2.el8 - edk2-OvmfPkg-QemuKernelLoaderFsDxe-suppress-error-on-no-k.patch bz1844682 -...

Twinned Tree Vulnerability Has Logic Flaw Vulnerability

Overview: Merkle Tree MT is one of the basic algorithms used in blockchain technology to safeguard data against tampering and fast verification. Due to problems in the implementation of some MT construction algorithms, it allows attackers to tamper with part of the block data without affecting th...

CVE-2020-26211

In BookStack

Design/Logic Flaw

u'Buffer over-read issue in Bluetooth peripheral firmware due to lack of check for invalid opcode and length of opcode received from central deviceThis CVE is equivalent to Link Layer Length Overfow issue CVE-2019-16336,CVE-2019-17519 and Silent Length Overflow issueCVE-2019-17518 mentioned in...

CVE-2020-3703

u'Buffer over-read issue in Bluetooth peripheral firmware due to lack of check for invalid opcode and length of opcode received from central deviceThis CVE is equivalent to Link Layer Length Overfow issue CVE-2019-16336,CVE-2019-17519 and Silent Length Overflow issueCVE-2019-17518 mentioned in...

Fake COVID-19 survey hides ransomware in Canadian university attack

This post was authored by Jérôme Segura with contributions from Hossein Jazi, Hasherezade and Marcelo Rivero. In recent weeks, weve observed a number of phishing attacks against universities worldwide which we attributed to the Silent Librarian APT group. On October 19, we identified a new phishi...

BEC Attacks: Nigeria No Longer the Epicenter as Losses Top $26B

A study of more than 9,000 instances of business email compromise BEC attacks all over the world shows that the number has skyrocketed over the past year, and that the social-engineering scam has expanded well beyond its historic roots in Nigeria. The report from Agari’s Cyber Intelligence Divisi...

Silent Librarian Goes Back to School with Global Research-Stealing Effort

The Silent Librarian campaign has re-emerged for the fall school session, actively targeting students and faculty at universities via spear-phishing campaigns. The threat group also known as TA407 and Cobalt Dickens, which operates out of Iran, has been on the prowl since the start of the 2019...

Silent Librarian APT right on schedule for 20/21 academic year

A threat actor known as Silent Librarian/TA407/COBALT DICKENS has been actively targeting universities via spear phishing campaigns since schools and universities went back. In mid-September, we were tipped off by one of our customers about a new active campaign from this APT group. Based off a...

Message Authentication Codes calculated by the Default Encryption Module allow an attacker to silently overwrite blocks in a file (NC-SA-2020-038)

A wrong generation of the passphrase for the encrypted block in Nextcloud Server 19.0.1 allowed an attacker to overwrite blocks in a file...

CVE-2020-12618

eM Client before 7.2.33412.0 automatically imported S/MIME certificates and thereby silently replaced existing ones. This allowed a man-in-the-middle attacker to obtain an email-validated S/MIME certificate from a trusted CA and replace the public key of the entity to be impersonated. This enable...

Avian JVM 1.2.0 Silent Return Exploit

Avian JVM version 1.2.0 suffers from a silent return issue in the vm::arrayCopy method defined in classpath-common.h, where multiple boundary checks are performed to prevent out-of-bounds memory read/write. One of these boundary checks makes the code return silently when a negative length is...

Avian JVM 1.2.0 Silent Return

Vulnerability title: Avian JVM vm::arrayCopy silent return on negative length Author: Pietro Oliva CVE: CVE-2020-17361 Vendor: ReadyTalk Product: Avian JVM Affected version: 1.2.0 Description: The issue is located in the vm::arrayCopy method defined in classpath-common.h, where multiple boundary...

Mozilla: Add-On updates did not respect the same certificate trust rules as software updates

The Mozilla Foundation Security Advisory describes this flaw as: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected even if they were legitimately added by an administrator. This could have caused add-ons to become out-of-date silently without...

Mozilla: Add-On updates did not respect the same certificate trust rules as software updates

The Mozilla Foundation Security Advisory describes this flaw as: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected even if they were legitimately added by an administrator. This could have caused add-ons to become out-of-date silently without...

Mozilla: Add-On updates did not respect the same certificate trust rules as software updates

The Mozilla Foundation Security Advisory describes this flaw as: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected even if they were legitimately added by an administrator. This could have caused add-ons to become out-of-date silently without...

Mozilla: Add-On updates did not respect the same certificate trust rules as software updates

The Mozilla Foundation Security Advisory describes this flaw as: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected even if they were legitimately added by an administrator. This could have caused add-ons to become out-of-date silently without...

Mozilla: Add-On updates did not respect the same certificate trust rules as software updates

The Mozilla Foundation Security Advisory describes this flaw as: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected even if they were legitimately added by an administrator. This could have caused add-ons to become out-of-date silently without...

Mozilla: Add-On updates did not respect the same certificate trust rules as software updates

The Mozilla Foundation Security Advisory describes this flaw as: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected even if they were legitimately added by an administrator. This could have caused add-ons to become out-of-date silently without...

Mozilla: Add-On updates did not respect the same certificate trust rules as software updates

The Mozilla Foundation Security Advisory describes this flaw as: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected even if they were legitimately added by an administrator. This could have caused add-ons to become out-of-date silently without...