lib/Crypto/PublicKey/ElGamal.py in PyCrypto through 2.6.1 generates weak ElGamal key parameters, 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 PyCrypto's ElGamal implementation.
Source: MITRE
Max CVSS
7.5
EPSS Score
0.33%
Published
2018-02-03
Updated
2020-07-31
Heap-based buffer overflow in the ALGnew function in block_templace.c in Python Cryptography Toolkit (aka pycrypto) allows remote attackers to execute arbitrary code as demonstrated by a crafted iv parameter to cryptmsg.py.
Source: MITRE
Max CVSS
9.8
EPSS Score
1.43%
Published
2017-02-15
Updated
2017-07-01
The Crypto.Random.atfork function in PyCrypto before 2.6.1 does not properly reseed the pseudo-random number generator (PRNG) before allowing a child process to access it, which makes it easier for context-dependent attackers to obtain sensitive information by leveraging a race condition in which a child process is created and accesses the PRNG within the same rate-limit period as another process.
Source: Debian GNU/Linux
Max CVSS
4.3
EPSS Score
0.11%
Published
2013-10-26
Updated
2013-10-28
PyCrypto before 2.6 does not produce appropriate prime numbers when using an ElGamal scheme to generate a key, which reduces the signature space or public key space and makes it easier for attackers to conduct brute force attacks to obtain the private key.
Source: MITRE
Max CVSS
4.3
EPSS Score
0.43%
Published
2012-06-17
Updated
2017-08-29
4 vulnerabilities found
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