CVE-2018-6594
CVSS V2 Medium 5
CVSS V3 High 7.5
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.
Overview
- CVE ID
- CVE-2018-6594
- Assigner
- cve@mitre.org
- Vulnerability Status
- Modified
- Published Version
- 2018-02-03T15:29:00
- Last Modified Date
- 2020-07-31T19:15:09
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:dlitz:pycrypto:*:*:*:*:*:*:*:* | 1 | OR | 2.6.1 | |
| cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:N/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/TElgamal/attack-on-pycrypto-elgamal | Third Party Advisory |
| https://github.com/dlitz/pycrypto/issues/253 | Exploit Issue Tracking Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html | Mailing List Third Party Advisory |
| https://usn.ubuntu.com/3616-1/ | Third Party Advisory |
| https://usn.ubuntu.com/3616-2/ | Third Party Advisory |
| https://security.gentoo.org/glsa/202007-62 |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-6594 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6594 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:27:16 | Added to TrackCVE | |||
| 2022-12-03 01:44:04 | 2018-02-03T15:29Z | 2018-02-03T15:29:00 | CVE Published Date | updated |
| 2022-12-03 01:44:04 | 2020-07-31T19:15:09 | CVE Modified Date | updated | |
| 2022-12-03 01:44:04 | Modified | Vulnerability Status | updated |