libgcrypt: mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm

A side-channel attack flaw was found in the way libgcrypt implemented Elgamal encryption. This flaw allows an attacker to decrypt parts of ciphertext encrypted using Elgamal, for example, when using OpenPGP. The highest threat from this vulnerability is to confidentiality...

MGASA-2021-0468 Updated libcryptopp packages fix security vulnerability

The ElGamal implementation in Crypto++ through 8.5 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's...

Updated libcryptopp packages fix security vulnerability

The ElGamal implementation in Crypto++ through 8.5 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's...

OESA-2021-1362 libgcrypt security update

Libgcrypt is a general purpose cryptographic library originally based on code from GnuPG. Security Fixes: The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime...

Updated libgcrypt packages fix security vulnerability

The updated packages fix a security vulnerability: The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defin...

MGASA-2021-0446 Updated libgcrypt packages fix security vulnerability

The updated packages fix a security vulnerability: The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defin...

CVE-2021-3521

There is a flaw in RPM's signature functionality. OpenPGP subkeys are associated with a primary key via a "binding signature."1 RPM does not check the binding signature of subkeys prior to importing them. If an attacker is able to add or socially engineer another party to add a malicious subkey t...

Huawei EulerOS: Security Advisory for libgcrypt (EulerOS-SA-2021-2503)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

EulerOS 2.0 SP9 : libgcrypt (EulerOS-SA-2021-2556)

According to the versions of the libgcrypt package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attac...

EulerOS 2.0 SP5 : libgcrypt (EulerOS-SA-2021-2503)

According to the versions of the libgcrypt packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel atta...

EulerOS 2.0 SP8 : libgcrypt (EulerOS-SA-2021-2469)

According to the versions of the libgcrypt packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel atta...

Huawei EulerOS: Security Advisory for libgcrypt (EulerOS-SA-2021-2469)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Ubuntu 16.04 ESM : Libgcrypt vulnerabilities (USN-5080-2)

The remote Ubuntu 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5080-2 advisory. USN-5080-1 fixed several vulnerabilities in Libgcrypt. This update provides the corresponding update for Ubuntu 16.04 ESM. Tenable has extracted the...

Ubuntu 18.04 LTS / 20.04 LTS : Libgcrypt vulnerabilities (USN-5080-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5080-1 advisory. It was discovered that Libgcrypt incorrectly handled ElGamal encryption. An attacker could possibly use this issue to recover sensitive...

CVE-2021-40528

A flaw was found in libgcrypt's ElGamal implementation, where it allows plain text recovery. During the interaction between two cryptographic libraries, a certain combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's...

Denial Of Service (DoS)

libgcrypt20:sid is vulnerable to denial of service. The ElGamal implementation in Libgcrypt allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the...

ROS-2-813

2.813 Multiple vulnerabilities in Mozilla Thunderbird Mozilla Firefox CVE-2021-23953-CVE-2021-23965, CVE-2021-23991-CVE-2021-23993 1. Vulnerability Description: The vulnerability allows a remote attacker to gain access to potentially sensitive information. Vulnerability allows a remote attacker t...

ROS-2-456

2.456 Multiple vulnerabilities in Mozilla Thunderbird Mozilla Firefox CVE-2021-23953-CVE-2021-23965, CVE-2021-23991-CVE-2021-23993 1. Vulnerability Description: The vulnerability allows a remote attacker to gain access to potentially sensitive information. Vulnerability allows a remote attacker t...

ROS-2-1231

2.1231 Multiple vulnerabilities in Mozilla Thunderbird Mozilla Firefox CVE-2021-23953-CVE-2021-23965, CVE-2021-23991-CVE-2021-23993 1. Vulnerability Description: The vulnerability allows a remote attacker to gain access to potentially sensitive information. Vulnerability allows a remote attacker...

ROS-2-1183

2.1183 Multiple vulnerabilities in Mozilla Thunderbird Mozilla Firefox CVE-2021-23953-CVE-2021-23965, CVE-2021-23991-CVE-2021-23993 1. Vulnerability Description: The vulnerability allows a remote attacker to gain access to potentially sensitive information. Vulnerability allows a remote attacker...