CVE-2020-4042
Bareos Cram-MD5 Challenge Replay Vulnerability
Description
Bareos before version 19.2.8 and earlier allows a malicious client to communicate with the director without knowledge of the shared secret if the director allows client initiated connection and connects to the client itself. The malicious client can replay the Bareos director's cram-md5 challenge to the director itself leading to the director responding to the replayed challenge. The response obtained is then a valid reply to the directors original challenge. This is fixed in version 19.2.8.
INFO
Published Date :
July 10, 2020, 8:15 p.m.
Last Modified :
Nov. 21, 2024, 5:32 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.0
Exploitability Score :
2.2
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-2020-4042.
| URL | Resource |
|---|---|
| https://bugs.bareos.org/view.php?id=1250 | Vendor Advisory |
| https://github.com/bareos/bareos/security/advisories/GHSA-vqpj-2vhj-h752 | Mitigation Third Party Advisory |
| https://bugs.bareos.org/view.php?id=1250 | Vendor Advisory |
| https://github.com/bareos/bareos/security/advisories/GHSA-vqpj-2vhj-h752 | Mitigation Third Party 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-2020-4042 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-4042 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://bugs.bareos.org/view.php?id=1250 Added Reference https://github.com/bareos/bareos/security/advisories/GHSA-vqpj-2vhj-h752 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jul. 15, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N Changed Reference Type https://bugs.bareos.org/view.php?id=1250 No Types Assigned https://bugs.bareos.org/view.php?id=1250 Vendor Advisory Changed Reference Type https://github.com/bareos/bareos/security/advisories/GHSA-vqpj-2vhj-h752 No Types Assigned https://github.com/bareos/bareos/security/advisories/GHSA-vqpj-2vhj-h752 Mitigation, Third Party Advisory Added CWE NIST CWE-294 Added CPE Configuration OR *cpe:2.3:a:bareos:bareos:*:*:*:*:*:*:*:* versions up to (including) 19.2.7 *cpe:2.3:a:bareos:bareos:19.2.8:pre:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-4042 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-2020-4042
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.07 }} -0.02%
score
0.33011
percentile