Multiple vulnerabilities in SaltStack Salt
| Risk | Critical |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2020-11651 CVE-2020-11652 |
| CWE-ID | CWE-287 CWE-22 |
| Exploitation vector | Network |
| Public exploit |
Vulnerability #1 is being exploited in the wild. Vulnerability #2 is being exploited in the wild. |
| Vulnerable software Subscribe |
Salt Web applications / Remote management & hosting panels |
| Vendor | SaltStack |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
Updated: 28.05.2020
Raised bulletin severity to Critical, updated vulnerability description and CVSS score for vulnerability #1.
1) Improper Authentication
EUVDB-ID: #VU27494
Risk: Critical
CVSSv3.1: 8.2 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C]
CVE-ID: CVE-2020-11651
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to the salt-master process "ClearFuncs" class does not properly validate method calls. A remote non-authenticated attacker can bypass authentication process and gain access some methods without authentication. These methods can be used to retrieve user tokens from the salt master and/or run arbitrary commands on salt minion as root.
Note: this vulnerability is being actively exploited in the wild.
Install updates from vendor's website.
Vulnerable software versionsSalt: 2019.2 - 3000.1
External linkshttp://lists.opensuse.org/opensuse-security-announce/2020-04/msg00047.html
http://docs.saltstack.com/en/latest/topics/releases/2019.2.4.html
http://github.com/saltstack/salt/blob/v3000.2_docs/doc/topics/releases/3000.2.rst
http://labs.f-secure.com/advisories/saltstack-authorization-bypass
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.
2) Path traversal
EUVDB-ID: #VU27495
Risk: Medium
CVSSv3.1: 6.2 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:H/RL:O/RC:C]
CVE-ID: CVE-2020-11652
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in the salt-master process ClearFuncs class. A remote authenticated attacker can send a specially crafted HTTP request and read arbitrary files on the system.
MitigationInstall update from vendor's website.
Vulnerable software versionsSalt: 2019.2 - 3000.1
External linkshttp://lists.opensuse.org/opensuse-security-announce/2020-04/msg00047.html
http://docs.saltstack.com/en/latest/topics/releases/2019.2.4.html
http://github.com/saltstack/salt/blob/v3000.2_docs/doc/topics/releases/3000.2.rst
http://labs.f-secure.com/advisories/saltstack-authorization-bypass
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
