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Gnupg » Libgcrypt » * * * * : Security Vulnerabilities

Cpe Name:cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*
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# CVE ID CWE ID # of Exploits Vulnerability Type(s) Publish Date Update Date Score Gained Access Level Access Complexity Authentication Conf. Integ. Avail.
1 CVE-2021-33560 203 2021-06-08 2021-06-15
5.0
None Remote Low Not required Partial None None
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 attack against mpi_powm, and the window size is not chosen appropriately. (There is also an interoperability problem because the selection of the k integer value does not properly consider the differences between basic ElGamal encryption and generalized ElGamal encryption.) This, for example, affects use of ElGamal in OpenPGP.
2 CVE-2018-6829 327 +Info 2018-02-07 2020-01-15
5.0
None Remote Low Not required Partial None None
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.
3 CVE-2018-0495 203 2018-06-13 2020-08-24
1.9
None Local Medium Not required Partial None None
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.
4 CVE-2017-9526 200 +Info 2017-06-11 2019-01-16
4.3
None Remote Medium Not required Partial None None
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.
5 CVE-2017-7526 310 2018-07-26 2019-10-09
4.3
None Remote Medium Not required Partial None None
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.
6 CVE-2017-0379 200 +Info 2017-08-29 2019-01-16
5.0
None Remote Low Not required Partial None None
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.
7 CVE-2016-6313 200 +Info 2016-12-13 2018-01-05
5.0
None Remote Low Not required Partial None None
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.
8 CVE-2015-7511 200 +Info 2016-04-19 2017-07-01
1.9
None Local Medium Not required Partial None None
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.
9 CVE-2015-0837 203 +Info 2019-11-29 2019-12-14
4.3
None Remote Medium Not required Partial None None
The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a "Last-Level Cache Side-Channel Attack."
10 CVE-2014-5270 200 +Info 2014-10-10 2017-11-04
2.1
None Local Low Not required Partial None None
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.
11 CVE-2014-3591 200 +Info 2019-11-29 2019-12-05
1.9
None Local Medium Not required Partial None None
Libgcrypt before 1.6.3 and GnuPG before 1.4.19 does not implement ciphertext blinding for Elgamal decryption, which allows physically proximate attackers to obtain the server's private key by determining factors using crafted ciphertext and the fluctuations in the electromagnetic field during multiplication.
12 CVE-2013-4242 200 +Info 2013-08-19 2018-10-30
1.9
None Local Medium Not required Partial None None
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.
Total number of vulnerabilities : 12   Page : 1 (This Page)
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