CVE-2021-25633

LibreOffice supports digital signatures of ODF documents and macros within documents, presenting visual aids that no alteration of the document occurred since the last signing and that the signature is valid. An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to...

LibreOffice 数据伪造问题漏洞

LibreOffice is an open source office software suite from The Document Foundation. LibreOffice suffers from a Data Forgery Problem vulnerability that stems from the application not properly checking the digital signatures of ODF documents. An attacker could use the vulnerability to change the...

LibreOffice 信任管理问题漏洞

LibreOffice is a suite that is compatible with other major office softwares and can be executed on a variety of platforms. A vulnerability exists in LibreOffice due to a trust management issue. An attacker could use this vulnerability to create digitally signed ODF documents by manipulating the...

Google Warns of a New Way Hackers Can Make Malware Undetectable on Windows

Cybersecurity researchers have disclosed a novel technique adopted by a threat actor to deliberately evade detection with the help of malformed digital signatures of its malware payloads. "Attackers created malformed code signatures that are treated as valid by Windows but are not able to be...

SSH SHA-1 HMAC Algorithms Enabled

The remote SSH server is configured to enable SHA-1 HMAC algorithms. Although NIST has formally deprecated use of SHA-1 for digital signatures, SHA-1 is still considered secure for HMAC as the security of HMAC does not rely on the underlying hash function being resistant to collisions. Note that...

Securing the Supply Chain: Lessons Learned from the Codecov Compromise

Supply chain attacks are all the rage these days. While they’re not a new part of the threat landscape, they are growing in popularity among more sophisticated threat actors, and they can create significant system-wide disruption, expense, and loss of confidence across multiple organizations,...

GHSA-89V2-G37M-G3FF Improper Verification of Cryptographic Signature in aws-encryption-sdk-cli

Impact This advisory addresses several LOW severity issues with streaming signed messages and restricting processing of certain types of invalid messages. This ESDK supports a streaming mode where callers may stream the plaintext of signed messages before the ECDSA signature is validated. In...

Researchers Demonstrate 2 New Hacks to Modify Certified PDF Documents

Cybersecurity researchers have disclosed two new attack techniques on certified PDF documents that could potentially enable an attacker to alter a document's visible content by displaying malicious content over the certified content without invalidating its signature. "The attack idea exploits the...

Cisco SD-WAN Software Signature Verification Bypass (cisco-sa-sdwan-sigverbypass-gPYXd6Mk)

According to its self-reported version, Cisco SD-WAN Viptela Software is affected by a vulnerability due to improper verification of digital signatures for patch images. An authenticated, remote attacker with Administrator credentials can exploit this to install a malicious software patch on an...

elliptic curve cryptography hardware accelerator 安全漏洞

A security vulnerability exists in the elliptic curve cryptography hardware accelerator that allows an attacker to recover private ECC keys used during ECDSA operations...

RHEL 8 : opensc (RHSA-2021:1600)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:1600 advisory. The OpenSC set of libraries and utilities provides support for working with smart cards. OpenSC focuses on cards that support cryptographic...

opensc security, bug fix, and enhancement update

An update is available for opensc. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The OpenSC set of libraries and utilities provides support for working with...

Moderate: opensc security, bug fix, and enhancement update

The OpenSC set of libraries and utilities provides support for working with smart cards. OpenSC focuses on cards that support cryptographic operations and enables their use for authentication, mail encryption, or digital signatures. Security Fixes: opensc: heap-based buffer overflow in...

GitHub Missing Audit Logging

Original blog post here: https://wwws.nightwatchcybersecurity.com/2021/04/25/supply-chain-attacks-via-github-com-releases/ SUMMARY Release functionality on GitHub.com allows modification of assets within a release by any project collaborator. This can occur after the release is published, and...

GO-2020-0047 Weak hash (SHA-1) in github.com/RobotsAndPencils/go-saml

XML Digital Signatures generated and validated using this package use SHA-1, which may allow an attacker to craft inputs which cause hash collisions depending on their control over the input...

UBUNTU-CVE-2021-20305

A flaw was found in Nettle in versions before 3.7.2, where several Nettle signature verification functions GOST DSA, EDDSA & ECDSA result in the Elliptic Curve Cryptography point ECC multiply function being called with out-of-range scalers, possibly resulting in incorrect results. This flaw allow...

CVE-2021-1453

A vulnerability in the software image verification functionality of Cisco IOS XE Software for the Cisco Catalyst 9000 Family of switches could allow an unauthenticated, physical attacker to execute unsigned code at system boot time. The vulnerability is due to an improper check in the code functi...

CVE-2021-1453 Cisco IOS XE Software for the Catalyst 9000 Family Arbitrary Code Execution Vulnerability

A vulnerability in the software image verification functionality of Cisco IOS XE Software for the Cisco Catalyst 9000 Family of switches could allow an unauthenticated, physical attacker to execute unsigned code at system boot time. The vulnerability is due to an improper check in the code functi...

CVE-2021-1453 Cisco IOS XE Software for the Catalyst 9000 Family Arbitrary Code Execution Vulnerability

A vulnerability in the software image verification functionality of Cisco IOS XE Software for the Cisco Catalyst 9000 Family of switches could allow an unauthenticated, physical attacker to execute unsigned code at system boot time. The vulnerability is due to an improper check in the code functi...

Mozilla Arbitrary Code Execution / Privilege Escalation Vulnerability

Hi @ll, back in 2015 and 2016, I disclosed several BLOODY beginner's errors alias epic failures in Mozilla's PERMANENTLY vulnerable executable installers for Windows, built by completely incompetent tinkerers: Defense in depth -- the Mozilla way: return and exit codes are dispensable alias and...