CVE-2016-9243
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.
Overview
- CVE ID
- CVE-2016-9243
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Analyzed
- Published Version
- 2017-03-27T17:59:00
- Last Modified Date
- 2017-04-04T16:00:48
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:cryptography.io:cryptography:*:*:*:*:*:*:*:* | 1 | OR | 1.5.2 | |
| cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:16.10:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- 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:N/I:H/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- 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.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WQ5G7KHKZC4SI23JE7277KZXM57GEQKT/ | Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U23KDR2M2N7W2ZSREG63BVW7D4VC6CIZ/ | Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5R2ZOBMPWDFFHUZ6QOZZY36A6H5CGJXL/ | Third Party Advisory |
| https://github.com/pyca/cryptography/issues/3211 | Third Party Advisory |
| https://github.com/pyca/cryptography/commit/b924696b2e8731f39696584d12cceeb3aeb2d874 | Patch Third Party Advisory |
| https://cryptography.io/en/latest/changelog | Release Notes Third Party Advisory |
| http://www.ubuntu.com/usn/USN-3138-1 | Third Party Advisory |
| http://www.securityfocus.com/bid/94216 | Third Party Advisory VDB Entry |
| http://www.openwall.com/lists/oss-security/2016/11/09/2 | Mailing List Patch VDB Entry |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2016-9243 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9243 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 09:45:55 | Added to TrackCVE | |||
| 2022-12-02 15:09:27 | 2017-03-27T17:59Z | 2017-03-27T17:59:00 | CVE Published Date | updated |
| 2022-12-02 15:09:27 | 2017-04-04T16:00:48 | CVE Modified Date | updated | |
| 2022-12-02 15:09:27 | Analyzed | Vulnerability Status | updated |