CVE-2018-6594

2018-02-0300:00:00

ubuntu.com

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.003 Low

EPSS

Percentile

70.9%

JSON

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.

Bugs

<https://github.com/dlitz/pycrypto/issues/253>
<https://github.com/Legrandin/pycryptodome/issues/90>
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=889999 (python-crypto)>
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=889998 (pycryptodome)>

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchpycryptodome< 3.4.7-1ubuntu1UNKNOWN
ubuntu17.10noarchpython-crypto< 2.6.1-7ubuntu0.1UNKNOWN
ubuntu18.04noarchpython-crypto< 2.6.1-8ubuntu2UNKNOWN
ubuntu14.04noarchpython-crypto< 2.6.1-4ubuntu0.3UNKNOWN
ubuntu16.04noarchpython-crypto< 2.6.1-6ubuntu0.16.04.3UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	pycryptodome	< 3.4.7-1ubuntu1	UNKNOWN
ubuntu	17.10	noarch	python-crypto	< 2.6.1-7ubuntu0.1	UNKNOWN
ubuntu	18.04	noarch	python-crypto	< 2.6.1-8ubuntu2	UNKNOWN
ubuntu	14.04	noarch	python-crypto	< 2.6.1-4ubuntu0.3	UNKNOWN
ubuntu	16.04	noarch	python-crypto	< 2.6.1-6ubuntu0.16.04.3	UNKNOWN