SB2020061809 - Multiple vulnerabilities in HashiCorp Consul and Consul Enterprise

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Main Vulnerability Database SB2020061809

SB2020061809 - Multiple vulnerabilities in HashiCorp Consul and Consul Enterprise

Published: June 18, 2020 Updated: June 18, 2020

Security Bulletin ID SB2020061809
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-13170)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to the affected software does not appropriately enforce scope for local tokens issued by a primary data center, where replication to a secondary data center was not enabled., which leads to security restrictions bypass and privilege escalation.


2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-12797)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to the affected software fails to enforce changes to legacy ACL token rules due to non-propagation to secondary data centers, which leads to security restrictions bypass and privilege escalation.


3) Improper Resource Shutdown or Release (CVE-ID: CVE-2020-12758)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack. 

The vulnerability exists due to the affected can software crash when configured with an abnormally-formed service-router entry. A remote attacker can cause a denial of service condition on the targeted system. 


4) Buffer overflow (CVE-ID: CVE-2020-13250)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in HTTP API and DNS caching feature. A remote attacker can trigger memory corruption and cause a denial of service condition on the target system.



Remediation

Install update from vendor's website.

References