Information Disclosure

NSS is vulnerable to information disclosure. Timing differences when performing DSA signatures could eventually leak private keys...

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : GRUB2 regression (USN-4432-2)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4432-2 advisory. USN-4432-1 fixed vulnerabilities in GRUB2 affecting Secure Boot environments. Unfortunately, the update introduced regressions for some BI...

Ripple20 Critical Vulnerabilities – Detection Logic and Signatures

ARCHIVED STORY Ripple20 Critical Vulnerabilities – Detection Logic and Signatures By Steve Povolny · August 05, 2020 This document has been prepared by McAfee Advanced Threat Research in collaboration with JSOF who discovered and responsibly disclosed the vulnerabilities. It is intended to serve ...

Ripple20 Critical Vulnerabilities – Detection Logic and Signatures

ARCHIVED STORY Ripple20 Critical Vulnerabilities – Detection Logic and Signatures By Steve Povolny · August 05, 2020 This document has been prepared by McAfee Advanced Threat Research in collaboration with JSOF who discovered and responsibly disclosed the vulnerabilities. It is intended to serve ...

CVE-2020-12400

A side-channel flaw was found in NSS, in the way P-384 and P-521 curves are used in the generation of EDSA signatures, leaking partial information about the ECDSA nonce. Given a small number of ECDSA signatures, this information can be used to steal the private key. The highest threat from this...

kernel security and bug fix update

4.18.0-193.14.32.OL8 - Oracle Linux certificates Kevin Lyons - Disable signing for aarch64 Ilya Okomin - Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list olkmodsigningkey.pem Orabug: 29539237 - Update x509.genkey Orabug: 24817676 - Conflict with shim-ia32 and shim-x6...

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : GRUB 2 vulnerabilities (USN-4432-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4432-1 advisory. Jesse Michael and Mickey Shkatov discovered that the configuration parser in GRUB2 did not properly exit when errors were...

grub2: Fail kernel validation without shim protocol

GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim...

EDNS Client Subnet DNS DoS

The vulnerability of the EDNS Client Subnet ECS DNS-server BIND component is related to errors in processing responses with incorrectly formed RRSIG fields. Exploiting this vulnerability can allow a malicious actor to cause service failures...

CVE-2020-15093

The tough library Rust/crates.io prior to version 0.7.1 does not properly verify the threshold of cryptographic signatures. It allows an attacker to duplicate a valid signature in order to circumvent TUF requiring a minimum threshold of unique signatures before the metadata is considered valid. A...

CVE-2020-15093

The tough library Rust/crates.io prior to version 0.7.1 does not properly verify the threshold of cryptographic signatures. It allows an attacker to duplicate a valid signature in order to circumvent TUF requiring a minimum threshold of unique signatures before the metadata is considered valid. A...

CVE-2020-15093

The tough library Rust/crates.io prior to version 0.7.1 does not properly verify the threshold of cryptographic signatures. It allows an attacker to duplicate a valid signature in order to circumvent TUF requiring a minimum threshold of unique signatures before the metadata is considered valid. A...

Information disclosure

The tough library Rust/crates.io prior to version 0.7.1 does not properly verify the threshold of cryptographic signatures. It allows an attacker to duplicate a valid signature in order to circumvent TUF requiring a minimum threshold of unique signatures before the metadata is considered valid. A...

CVE-2020-15093 Improper verification of signature threshold in tough

The tough library Rust/crates.io prior to version 0.7.1 does not properly verify the threshold of cryptographic signatures. It allows an attacker to duplicate a valid signature in order to circumvent TUF requiring a minimum threshold of unique signatures before the metadata is considered valid. A...

CVE-2020-15093

The CVE-2020-15093 entry concerns the tough library (Rust/crates.io) prior to version 0.7.1, where the threshold of cryptographic signatures is not properly verified. This allows an attacker to duplicate a valid signature to bypass TUF’s minimum threshold of unique signatures before metadata is c...

CVE-2020-15093

The tough library Rust/crates.io prior to version 0.7.1 does not properly verify the threshold of cryptographic signatures. It allows an attacker to duplicate a valid signature in order to circumvent TUF requiring a minimum threshold of unique signatures before the metadata is considered valid. A...

USN-4376-2: OpenSSL vulnerabilities

USN-4376-1 fixed several vulnerabilities in OpenSSL. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Original advisory details: Cesar Pereida García, Sohaib ul Hassan, Nicola Tuveri, Iaroslav Gridin, Alejandro Cabrera Aldaya, and Billy Brumley discovered...

CVE-2020-12399

NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. This vulnerability affects Thunderbird 68.9.0, Firefox 77, and Firefox ESR 68.9...

Design/Logic Flaw

NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. This vulnerability affects Thunderbird 68.9.0, Firefox 77, and Firefox ESR 68.9...

CVE-2020-12399

NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. This vulnerability affects Thunderbird 68.9.0, Firefox 77, and Firefox ESR 68.9...