Debian update for salt

Published: 2020-05-07 | Updated: 2024-03-22

Risk	High
Patch available	YES
Number of vulnerabilities	3
CVE-ID	CVE-2019-17361 CVE-2020-11651 CVE-2020-11652
CWE-ID	CWE-78 CWE-287 CWE-22
Exploitation vector	Network
Public exploit	Vulnerability #2 is being exploited in the wild. Vulnerability #3 is being exploited in the wild.
Vulnerable software	salt (Debian package) Operating systems & Components / Operating system package or component
Vendor	Debian

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) OS Command Injection

EUVDB-ID: #VU27599

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-17361

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation the salt-api NET API with the ssh client enabled. A remote unauthenticated attacker with network access to the API endpoint can pass specially crafted data to the application and execute arbitrary OS commands on the salt-api host.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update salt package to one of the following versions: 2016.11.2+ds-1+deb9u3, 2018.3.4+dfsg1-6+deb10u1.

Vulnerable software versions

salt (Debian package): 2016.11.2+ds-1+deb9u1 - 2018.3.4~git20180207+dfsg1-1

CPE2.3

External links

https://www.debian.org/security/2020/dsa-4676

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Improper Authentication

EUVDB-ID: #VU27494

Risk: Critical

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2020-11651

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: Yes

Description

The 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.

Mitigation

Update salt package to one of the following versions: 2016.11.2+ds-1+deb9u3, 2018.3.4+dfsg1-6+deb10u1.

Vulnerable software versions

salt (Debian package): 2016.11.2+ds-1+deb9u1 - 2018.3.4~git20180207+dfsg1-1

CPE2.3

External links

https://www.debian.org/security/2020/dsa-4676

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.

3) Path traversal

EUVDB-ID: #VU27495

Risk: Medium

CVSSv4.0: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2020-11652

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: Yes

Description

The 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.

Mitigation

Update salt package to one of the following versions: 2016.11.2+ds-1+deb9u3, 2018.3.4+dfsg1-6+deb10u1.

Vulnerable software versions

salt (Debian package): 2016.11.2+ds-1+deb9u1 - 2018.3.4~git20180207+dfsg1-1

CPE2.3

External links

https://www.debian.org/security/2020/dsa-4676

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.