CVE-2018-6829
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts, 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 Libgcrypt's ElGamal implementation.
Overview
- CVE ID
- CVE-2018-6829
- Assigner
- cve@mitre.org
- Vulnerability Status
- Modified
- Published Version
- 2018-02-07T23:29:01
- Last Modified Date
- 2020-01-15T20:15:18
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:* | 1 | OR | 1.8.2 |
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://lists.gnupg.org/pipermail/gcrypt-devel/2018-February/004394.html | Issue Tracking Third Party Advisory |
| https://github.com/weikengchen/attack-on-libgcrypt-elgamal/wiki | Exploit Third Party Advisory |
| https://github.com/weikengchen/attack-on-libgcrypt-elgamal | Third Party Advisory |
| https://www.oracle.com/security-alerts/cpujan2020.html |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-6829 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6829 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:53:35 | Added to TrackCVE | |||
| 2022-12-03 01:52:55 | 2018-02-07T23:29Z | 2018-02-07T23:29:01 | CVE Published Date | updated |
| 2022-12-03 01:52:55 | 2020-01-15T20:15:18 | CVE Modified Date | updated | |
| 2022-12-03 01:52:55 | Modified | Vulnerability Status | updated |