VMware Carbon Black TAU: Ryuk Ransomware Technical Analysis

Ryuk Ransomware has been crippling both the public and private sector recently with the ability to disrupt its target environment. The ransomware will typically be dropped by an already compromised system that has been infected by Trickbot or Emotet through a phishing email. Once the Ryuk payload...

CVE-2019-18988

TeamViewer Desktop through 14.7.1965 allows a bypass of remote-login access control because the same key is used for different customers' installations. It used a shared AES key for all installations since at least as far back as v7.0.43148, and used it for at least OptionsPasswordAES in the...

Authentication flaw

TeamViewer Desktop through 14.7.1965 allows a bypass of remote-login access control because the same key is used for different customers' installations. It used a shared AES key for all installations since at least as far back as v7.0.43148, and used it for at least OptionsPasswordAES in the...

CVE-2019-18988

TeamViewer Desktop through 14.7.1965 allows a bypass of remote-login access control because the same key is used for different customers' installations. It used a shared AES key for all installations since at least as far back as v7.0.43148, and used it for at least OptionsPasswordAES in the...

CVE-2019-18988

TeamViewer Desktop through 14.7.1965 allows a bypass of remote-login access control because the same key is used for different customers' installations. It used a shared AES key for all installations since at least as far back as v7.0.43148, and used it for at least OptionsPasswordAES in the...

CVE-2019-18988

CVE-2019-18988 affects TeamViewer Desktop up to 14.7.1965, where a single AES key was reused across different customer installations (used for OptionsPasswordAES). This allows an attacker who gains the key to decrypt protected data stored in registry/configuration files, potentially revealing the...

Security Bulletin: IBM Aspera WebApps (Shares, Faspex, Console, Orchestrator) and products are affected by OpenSSL Vulnerability (CVE-ID: CVE-2019-1543)

Summary IBM Aspera WebApps Shares, Faspex, Console, Orchestrator products have addressed the following OpenSSL vulnerability Vulnerability Details CVEID: CVE-2019-1543 DESCRIPTION: ChaCha20-Poly1305 is an AEAD cipher, and requires a unique nonce input for every encryption operation. RFC 7539...

CVE-2019-18988

TeamViewer Desktop through 14.7.1965 allows a bypass of remote-login access control because the same key is used for different customers’ installations. It used a shared AES key for all installations since at least as far back as v7.0.43148, and used it for at least OptionsPasswordAES in the...

Cisco Data Center Network Manager 11.2 - Remote Code Execution Exploit

Exploit for java platform in category web applications !/usr/bin/python """ Cisco Data Center Network Manager SanWS importTS Command Injection Remote Code Execution Vulnerability Tested on: Cisco DCNM 11.2.1 Installer for Windows 64-bit - Release: 11.21 - Release Date: 18-Jun-2019 - FileName:...

Cisco Data Center Network Manager 11.2 Remote Code Execution

!/usr/bin/python """ Cisco Data Center Network Manager SanWS importTS Command Injection Remote Code Execution Vulnerability Tested on: Cisco DCNM 11.2.1 Installer for Windows 64-bit - Release: 11.21 - Release Date: 18-Jun-2019 - FileName: dcnm-installer-x64-windows.11.2.1.exe.zip - Size: 1619.36 ...

Client/server denial of service when handling AES-CTR ciphers

The libssh team reports originally reported by Yasheng Yang from Google: A malicious client or server could crash the counterpart implemented with libssh AES-CTR ciphers are used and don't get fully initialized. It will crash when it tries to cleanup the AES-CTR ciphers when closing the connectio...

Bit Flipping Attack

parsel is vulnerable to bit flipping attack. The use of an insecure cryptographic algorithm aes-256-cbc without any integrity checks causes its ciphertext to be easily broken by bit-flipping attacks...

Insecure Cryptography Algorithm

Overview All versions of parsel use an insecure cryptography algorithm. The package uses aes-256-cbc without integrity checks, which renders the ciphertext vulnerable to bit-flipping attacks. Recommendation The package is deprecated and will not be updated. Consider using an alternative package...

Bit-Flipping Attack

Amendment This was deemed not a vulnerability. Overview parsel is a gem to encrypt and decrypt data with a given key. Affected versions of this package are vulnerable to Bit-Flipping Attack via the ciphertext function. AES-256-CBC, the construct used in parsel.rb, has no integrity check i.e., the...

openSUSE Security Update : libgcrypt (openSUSE-2020-22)

This update for libgcrypt fixes the following issues : Security issues fixed : - CVE-2019-13627: Mitigation against an ECDSA timing attack bsc1148987. Bug fixes : - Added CMAC AES self test bsc1155339. - Added CMAC TDES self test missing bsc1155338. - Fix test dsa-rfc6979 in FIPS mode. This updat...

OPENSUSE-SU-2020:0022-1 Security update for libgcrypt

This update for libgcrypt fixes the following issues: Security issues fixed: - CVE-2019-13627: Mitigation against an ECDSA timing attack bsc1148987. Bug fixes: - Added CMAC AES self test bsc1155339. - Added CMAC TDES self test missing bsc1155338. - Fix test dsa-rfc6979 in FIPS mode. This update w...

EulerOS Virtualization for ARM 64 3.0.5.0 : libgcrypt (EulerOS-SA-2020-1085)

According to the versions of the libgcrypt package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - It was discovered that there was a ECDSA timing attack in the libgcrypt20 cryptographic library. Version affected:...

Security update for libgcrypt (moderate)

openSUSE Security Update: Security update for libgcrypt Announcement ID: openSUSE-SU-2020:0022-1 Rating: moderate References: 1148987 1155338 1155339 Cross-References: CVE-2019-13627 Affected Products: openSUSE Leap 15.1 An update that solves one vulnerability and has two fixes is now available...

Stowaway - Multi-hop Proxy Tool For Pentesters

Stowaway is Multi-hop proxy tool for security researchers and pentesters Users can easily proxy their network traffic to intranet nodes multi-layer PS: The files under demo folder are Stowaway's beta version,it's still functional, you can check the detail by README.md file under the demo folder...

The Curious Case of WebCrypto Diffie-Hellman on Firefox - Small Subgroups Key Recovery Attack on DH

tl;dr Mozilla Firefox prior to version 72 suffers from Small Subgroups Key Recovery Attack on DH in the WebCrypto 's API. The Firefox's team fixed the issue removing completely support for DH over finite fields that is not in the WebCrypto standard. If you find this interesting read further below...