CVE-2018-6594 Detail
Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Current Description
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
Description Last Modified:
02/03/2018
View Analysis Description
Analysis Description
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
Description Last Modified:
02/03/2018
Impact
CVSS v3.0 Severity and Metrics:
Base Score:
7.5 HIGH
Vector:
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
(V3 legend)
Impact Score:
3.6
Exploitability Score:
3.9
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
None
Availability (A):
None
CVSS v2.0 Severity and Metrics:
Base Score:
5.0 MEDIUM
Vector:
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
(V2 legend)
Impact Subscore:
2.9
Exploitability Subscore:
10.0
Access Vector (AV):
Network
Access Complexity (AC):
Low
Authentication (AU):
None
Confidentiality (C):
Partial
Integrity (I):
None
Availability (A):
None
Additional Information:
Allows unauthorized disclosure of information
References to Advisories, Solutions, and Tools
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Change History
5 change records found
- show changes
CVE Modified by MITRE -
4/10/2018 9:29:02 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
https://usn.ubuntu.com/3616-2/ [No Types Assigned] |
CVE Modified by MITRE -
4/4/2018 9:29:06 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
https://usn.ubuntu.com/3616-1/ [No Types Assigned] |
Initial Analysis -
3/13/2018 4:11:47 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:a:dlitz:pycrypto:*:*:*:*:*:*:*:* versions up to (including) 2.6.1 |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* |
| Added |
CVSS V2 |
|
(AV:N/AC:L/Au:N/C:P/I:N/A:N) |
| Added |
CVSS V3 |
|
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| Added |
CWE |
|
CWE-200 |
| Added |
CWE |
|
CWE-310 |
| Changed |
Reference Type |
https://github.com/dlitz/pycrypto/issues/253 No Types Assigned |
https://github.com/dlitz/pycrypto/issues/253 Exploit, Issue Tracking, Third Party Advisory |
| Changed |
Reference Type |
https://github.com/TElgamal/attack-on-pycrypto-elgamal No Types Assigned |
https://github.com/TElgamal/attack-on-pycrypto-elgamal Third Party Advisory |
| Changed |
Reference Type |
https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html No Types Assigned |
https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html Third Party Advisory |
CVE Modified by MITRE -
2/15/2018 9:29:07 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html [No Types Assigned] |
CVE Modified by MITRE -
2/3/2018 9:29:25 PM
| Action |
Type |
Old Value |
New Value |
| Changed |
Description |
lib/Crypto/PublicKey/ElGamal.py in PyCrypto through 2.6.1 generates weak ElGamal key parameters that allow chosen-plaintext attacks. The Decisional Diffie-Hellman (DDH) assumption does not hold for PyCrypto's ElGamal implementation. |
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. |
Quick Info
CVE Dictionary Entry:
CVE-2018-6594
NVD Published Date:
02/03/2018
NVD Last Modified:
04/10/2018
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