Nextcloud: Downgrade encryption scheme and break integrity through known-plaintext attack

The idea behind the Server Side Encryption is that you can move your encrypted files to an external party without that external party being able to to read or modify those files. Some time ago, Nextcloud switched from unauthenticated CFB cipher block mode to authenticated CTR cipher block mode in...

VSHG - Hardware resistance & enhanced security for GnuPG

VSHG aims to provide a memory / hardware resistant reinforcement to GnuPG's standared s2k key-derivation-function + a simplified interface for symmetric encryption . About VSHG VSHG Very secure hash generator is a standalone Addon for GnuPG Gnu privacy guard . It is written as a shell script and ...

Hardware resistance & enhanced security for GnuPG

VSHG aims to provide a memory / hardware resistant reinforcement to GnuPG’s standard s2k key-derivation-function + a simplified interface for symmetric encryption . VSHG Very secure hash generator is a standalone Addon for GnuPG Gnu privacy guard . It is written as a shell script and is designed...

Crypto Identifier - Tool To Uncipher Data Using Multiple Algorithms And Block Chaining Modes

Crypto tool for pentest and ctf : try to uncipher data using multiple algorithms and block chaining modes. Usefull for a quick check on unknown cipher text and key dictionary. Supported Algorithms : AES ARC2 ARC4 Blowfish CAST DES DES3 XOR Supported modes : ECB CBC CFB OFB Usage: python...

Security update for enigmail (moderate)

This update for enigmail fixes multiple issues. Security issues fixed: - CVE-2017-17688: CFB gadget attacks allowed to exfiltrate plaintext out of encrypted emails. enigmail now fails on GnuPG integrity check warnings for old Algorithms bsc1093151 - CVE-2017-17689: CBC gadget attacks allows to...

Security update for enigmail (moderate)

This update for enigmail to version 2.0.4 fixes multiple issues. Security issues fixed: - CVE-2017-17688: CFB gadget attacks allowed to exfiltrate plaintext out of encrypted emails. enigmail now fails on GnuPG integrity check warnings for old Algorithms bsc1093151 - CVE-2017-17689: CBC gadget...

CVE-2017-17688

The OpenPGP specification allows a Cipher Feedback Mode CFB malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL. NOTE: third parties report that this is a problem in applications that mishandle the Modification Detection Code MDC feature or accept an obsolete...

CVE-2017-17688

The OpenPGP specification allows a Cipher Feedback Mode CFB malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL. NOTE: third parties report that this is a problem in applications that mishandle the Modification Detection Code MDC feature or accept an obsolete...

CVE-2017-17688

CVE-2017-17688 concerns an OpenPGP CFB gadget/malleability attack (EFAIL) that can lead to plaintext exfiltration from encrypted emails. Connected advisories show Enigmail/OpenPGP patches (e.g., openSUSE SUSE/OpenSUSE-2019-368/395; Thunderbird enigmail updates) addressing this vulnerability by ti...

CVE-2017-17688

The OpenPGP specification allows a Cipher Feedback Mode CFB malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL. NOTE: third parties report that this is a problem in applications that mishandle the Modification Detection Code MDC feature or accept an obsolete...

CVE-2017-17688

Removed by vendor...

CVE-2017-17688: Undefined Security Weakness

The OpenPGP specification allows a Cipher Feedback Mode CFB malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL. NOTE: third parties report that this is a problem in applications that mishandle the Modification Detection Code MDC feature or accept an obsolete...

OpenPGP and S/MIME mail client vulnerabilities

Overview Mail clients may leak plaintext messages while decrypting OpenPGP and S/MIME messages. Description Email clients supporting the OpenPGP or S/MIME standards may be vulnerable to a CBC/CFB gadget attack which may allow an attacker to inject content into an encrypted email which would...

Design/Logic Flaw

The "CFB Mobile Banking" by Citizens First Bank Wisconsin app 3.0.1 -- aka cfb-mobile-banking/id1081102805 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate...

CVE-2017-9596

The CVE-2017-9596 entry concerns the iOS app “CFB Mobile Banking” (Citizens First Bank Wisconsin), version 3.0.1 (cfb-mobile-banking/id1081102805). The vulnerability is a failure to verify X.509 certificates from SSL servers, enabling man-in-the-middle attackers to spoof servers and obtain sensit...

CVE-2017-9596

The "CFB Mobile Banking" by Citizens First Bank Wisconsin app 3.0.1 -- aka cfb-mobile-banking/id1081102805 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate...

PT-2017-19056

Name of the Vulnerable Software and Affected Versions CFB Mobile Banking version 3.0.1 Description The issue allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate, as the app does not verify X.509 certificates from SSL servers...

CVE-2017-9596: Improper Certificate Validation

The "CFB Mobile Banking" by Citizens First Bank Wisconsin app 3.0.1 -- aka cfb-mobile-banking/id1081102805 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate...

Python Steganography Tool: Matroschka

Python Steganography Tool Матрёшка mɐˈtrʲɵʂkə is a command-line steganography tool written in pure Python. You can use it to hide and encrypt images or text in the least significant bits of pixels in an image. Encryption The encryption uses HMAC-SHA256 to authenticate the hidden data. Therefore t...

ownCloud: Exploiting unauthenticated encryption mode

The owncloud file storage encryption uses the AES encryption algorithm in CFB mode without any authentication. The encryption module is advertised as a way to use a potentially untrusted external storage 1. Let's assume someone uses owncloud with the encryption module and an untrusted storage and...