National Vulnerability Database

National Vulnerability Database

National Vulnerability

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Search Parameters:
  • Contains Software Flaws (CVE)
  • CPE Product Version: cpe:/a:gnupg:libgcrypt:1.4.4
There are 9 matching records.
Vuln ID Summary CVSS Severity

libgcrypt before version 1.7.8 is vulnerable to a cache side-channel attack resulting into a complete break of RSA-1024 while using the left-to-right method for computing the sliding-window expansion. The same attack is believed to work on RSA-2048 with moderately more computation. This side-channel requires that attacker can run arbitrary software on the hardware where the private RSA key is used.

Published: July 26, 2018; 09:29:00 AM -04:00
V3: 6.8 MEDIUM
V2: 4.3 MEDIUM

Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Published: June 13, 2018; 07:29:00 PM -04:00
V3: 4.7 MEDIUM
V2: 1.9 LOW

cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for Libgcrypt's ElGamal implementation.

Published: February 07, 2018; 06:29:01 PM -05:00
V3: 7.5 HIGH
V2: 5.0 MEDIUM

Libgcrypt before 1.8.1 does not properly consider Curve25519 side-channel attacks, which makes it easier for attackers to discover a secret key, related to cipher/ecc.c and mpi/ec.c.

Published: August 29, 2017; 06:29:00 PM -04:00
V3: 7.5 HIGH
V2: 5.0 MEDIUM

In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.

Published: June 10, 2017; 10:29:00 PM -04:00
V3: 5.9 MEDIUM
V2: 4.3 MEDIUM

The mixing functions in the random number generator in Libgcrypt before 1.5.6, 1.6.x before 1.6.6, and 1.7.x before 1.7.3 and GnuPG before 1.4.21 make it easier for attackers to obtain the values of 160 bits by leveraging knowledge of the previous 4640 bits.

Published: December 13, 2016; 03:59:04 PM -05:00
V3: 5.3 MEDIUM
V2: 5.0 MEDIUM

Libgcrypt before 1.6.5 does not properly perform elliptic-point curve multiplication during decryption, which makes it easier for physically proximate attackers to extract ECDH keys by measuring electromagnetic emanations.

Published: April 19, 2016; 05:59:03 PM -04:00
V3: 2.0 LOW
V2: 1.9 LOW

Libgcrypt before 1.5.4, as used in GnuPG and other products, does not properly perform ciphertext normalization and ciphertext randomization, which makes it easier for physically proximate attackers to conduct key-extraction attacks by leveraging the ability to collect voltage data from exposed metal, a different vector than CVE-2013-4576.

Published: October 09, 2014; 09:55:10 PM -04:00
V2: 2.1 LOW

GnuPG before 1.4.14, and Libgcrypt before 1.5.3 as used in GnuPG 2.0.x and possibly other products, allows local users to obtain private RSA keys via a cache side-channel attack involving the L3 cache, aka Flush+Reload.

Published: August 19, 2013; 07:55:09 PM -04:00
V2: 1.9 LOW