CVE-2019-16782
CVSS V2 Medium 4.3
CVSS V3 Medium 5.9
Description
There's a possible information leak / session hijack vulnerability in Rack (RubyGem rack). This vulnerability is patched in versions 1.6.12 and 2.0.8. Attackers may be able to find and hijack sessions by using timing attacks targeting the session id. Session ids are usually stored and indexed in a database that uses some kind of scheme for speeding up lookups of that session id. By carefully measuring the amount of time it takes to look up a session, an attacker may be able to find a valid session id and hijack the session. The session id itself may be generated randomly, but the way the session is indexed by the backing store does not use a secure comparison.
Overview
- CVE ID
- CVE-2019-16782
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2019-12-18T20:15:16
- Last Modified Date
- 2021-11-02T18:04:03
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:rack_project:rack:*:*:*:*:*:ruby:*:* | 1 | OR | 1.6.12 | |
| cpe:2.3:a:rack_project:rack:*:*:*:*:*:ruby:*:* | 1 | OR | 2.0.0 | 2.0.8 |
| cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:N/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 5.9
- Base Severity
- MEDIUM
- Exploitability Score
- 2.2
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/rack/rack/commit/7fecaee81f59926b6e1913511c90650e76673b38 | Patch Third Party Advisory |
| https://github.com/rack/rack/security/advisories/GHSA-hrqr-hxpp-chr3 | Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2019/12/18/2 | Mailing List Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2019/12/18/3 | Mailing List Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2019/12/19/3 | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HZXMWILCICQLA2BYSP6I2CRMUG53YBLX/ | Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00016.html | Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2020/04/08/1 | Mailing List Patch Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2020/04/09/2 | Mailing List Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-16782 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16782 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:48:48 | Added to TrackCVE | |||
| 2022-12-04 08:20:49 | 2019-12-18T20:15Z | 2019-12-18T20:15:16 | CVE Published Date | updated |
| 2022-12-04 08:20:49 | 2021-11-02T18:04:03 | CVE Modified Date | updated | |
| 2022-12-04 08:20:49 | Analyzed | Vulnerability Status | updated |