CVE-2020-29568
Xen Watch Event Queue Overload Vulnerability
Description
An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable.
INFO
Published Date :
Dec. 15, 2020, 5:15 p.m.
Last Modified :
April 26, 2022, 4:12 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
4.0
Exploitability Score :
2.0
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-2020-29568.
| URL | Resource |
|---|---|
| https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202107-30 | Third Party Advisory |
| https://www.debian.org/security/2021/dsa-4843 | Third Party Advisory |
| https://xenbits.xenproject.org/xsa/advisory-349.html | Patch 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-2020-29568 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-29568 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 -
Modified Analysis by [email protected]
Apr. 26, 2022
Action Type Old Value New Value Changed Reference Type https://security.gentoo.org/glsa/202107-30 No Types Assigned https://security.gentoo.org/glsa/202107-30 Third Party Advisory -
CWE Remap by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Changed CWE CWE-119 CWE-770 -
CVE Modified by [email protected]
Jul. 12, 2021
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202107-30 [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 15, 2021
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html Mailing List, Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions up to (including) 4.14.0 OR *cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions up to (including) 4.14.1 -
CVE Modified by [email protected]
Mar. 09, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 09, 2021
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html Mailing List, Third Party Advisory Changed Reference Type https://www.debian.org/security/2021/dsa-4843 No Types Assigned https://www.debian.org/security/2021/dsa-4843 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Feb. 12, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html [No Types Assigned] -
CVE Modified by [email protected]
Feb. 02, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-4843 [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 18, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H Changed Reference Type https://xenbits.xenproject.org/xsa/advisory-349.html No Types Assigned https://xenbits.xenproject.org/xsa/advisory-349.html Patch, Vendor Advisory Added CWE NIST CWE-119 Added CPE Configuration OR *cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions up to (including) 4.14.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-29568 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-2020-29568
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.12065
percentile