CVE-2019-8955
Tor KIST Cell Scheduler Denial of Service Vulncibility
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.
INFO
Published Date :
Feb. 21, 2019, 11:29 p.m.
Last Modified :
Aug. 24, 2020, 5:37 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-8955.
| URL | Resource |
|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00013.html | |
| http://www.securityfocus.com/bid/107136 | Third Party Advisory VDB Entry |
| https://blog.torproject.org/new-releases-tor-0402-alpha-0358-03411-and-03312 | Vendor Advisory |
| https://trac.torproject.org/projects/tor/ticket/29168 | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-8955 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-8955 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Aug. 24, 2020
Action Type Old Value New Value Changed CWE CWE-400 CWE-770 -
CVE Modified by [email protected]
Apr. 02, 2019
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00013.html [No Types Assigned] -
Modified Analysis by [email protected]
Feb. 26, 2019
Action Type Old Value New Value Changed Reference Type http://www.securityfocus.com/bid/107136 No Types Assigned http://www.securityfocus.com/bid/107136 Third Party Advisory, VDB Entry -
CVE Modified by [email protected]
Feb. 25, 2019
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/107136 [No Types Assigned] -
Initial Analysis by [email protected]
Feb. 22, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://blog.torproject.org/new-releases-tor-0402-alpha-0358-03411-and-03312 No Types Assigned https://blog.torproject.org/new-releases-tor-0402-alpha-0358-03411-and-03312 Vendor Advisory Changed Reference Type https://trac.torproject.org/projects/tor/ticket/29168 No Types Assigned https://trac.torproject.org/projects/tor/ticket/29168 Vendor Advisory Added CWE CWE-400 Added CPE Configuration OR *cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* versions up to (excluding) 0.3.3.12 *cpe:2.3:a:torproject:tor:0.3.4.0:alpha-dev:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.4.1:alpha:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.4.2:alpha:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.4.3:alpha:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.4.4:rc:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.4.5:rc:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.4.6:rc:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.4.7:rc:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* versions from (including) 0.3.4.8 up to (excluding) 0.3.4.11 *cpe:2.3:a:torproject:tor:0.3.5.0:alpha-dev:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.5.1:alpha:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.5.2:alpha:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.5.3:alpha:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.5.4:alpha:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.5.5:alpha:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.5.6:rc:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.3.5.7:*:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.4.0.1:alpha:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-8955 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-8955
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.60 }} -0.06%
score
0.87622
percentile