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CVE-2013-7459

pycrypto: Heap-buffer overflow in ALGobject structure

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.

CVSS 3.0 · 9.8 Critical EPSS 9.6% KEV · Not listed
Vendors
Dlitz Fedoraproject
Products
Pycrypto Fedora
CVE-2012-2417

python-crypto: Insecure ElGamal key generation

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.

CVSS 2.0 · 4.3 Medium EPSS 2.4% KEV · Not listed
Vendors
Dlitz
Products
Pycrypto
CVE-2013-1445

python-crypto: PRNG not correctly reseeded in some situations

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.

CVSS 2.0 · 4.3 Medium EPSS 1.7% KEV · Not listed
Vendors
Dlitz
Products
Pycrypto
CVE-2018-6594

python-crypto: Weak ElGamal key parameters in PublicKey/ElGamal.py allow attackers to obtain sensitive information by reading ciphertext

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.

CVSS 3.0 · 7.5 High EPSS 2.0% KEV · Not listed
Vendors
Canonical Debian Dlitz
Products
Ubuntu Linux Debian Linux Pycrypto