CVE-2019-8955
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4.x before 0.4.0.2-alpha, remote denial of service against Tor clients and relays can occur via memory exhaustion in the KIST cell scheduler.
Overview
- CVE ID
- CVE-2019-8955
- Assigner
- cve@mitre.org
- Vulnerability Status
- Modified
- Published Version
- 2019-02-21T23:29:00
- Last Modified Date
- 2020-08-24T17:37:01
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* | 1 | OR | 0.3.3.12 | |
| cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* | 1 | OR | 0.3.4.8 | 0.3.4.11 |
| cpe:2.3:a:torproject:tor:0.3.4.0:alpha-dev:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.4.1:alpha:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.4.2:alpha:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.4.3:alpha:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.4.4:rc:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.4.5:rc:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.4.6:rc:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.4.7:rc:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.5.0:alpha-dev:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.5.1:alpha:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.5.2:alpha:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.5.3:alpha:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.5.4:alpha:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.5.5:alpha:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.5.6:rc:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.3.5.7:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:torproject:tor:0.4.0.1:alpha:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- 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:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://trac.torproject.org/projects/tor/ticket/29168 | Vendor Advisory |
| https://blog.torproject.org/new-releases-tor-0402-alpha-0358-03411-and-03312 | Vendor Advisory |
| http://www.securityfocus.com/bid/107136 | Third Party Advisory VDB Entry |
| http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00013.html |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-8955 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8955 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:18:15 | Added to TrackCVE | |||
| 2022-12-03 17:35:20 | 2019-02-21T23:29Z | 2019-02-21T23:29:00 | CVE Published Date | updated |
| 2022-12-03 17:35:20 | 2020-08-24T17:37:01 | CVE Modified Date | updated | |
| 2022-12-03 17:35:20 | Modified | Vulnerability Status | updated |