CVE-2021-41805

published 2021-12-12

CVE-2021-41805: HashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4 has Incorrect Access Control. An ACL token (with the default…

Priority P2 68 high 8.8 CVSS 3.1

AV N AC L PR L UI N S U C H I H A H

HashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4 has Incorrect Access Control. An ACL token (with the default operator:write permissions) in one namespace can be used for unintended privilege escalation in a different namespace.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
debian	consul	—	—
hashicorp	consul	>= 1.10.0 < 1.10.4	1.10.4
hashicorp	consul	>= 1.7.0 < 1.8.17	1.8.17
hashicorp	consul	>= 1.9.0 < 1.9.11	1.9.11

Detection & IOCs extracted from sources · hover to see the quote

• → Privilege escalation via ACL token with operator:write permissions used across namespaces in HashiCorp Consul Enterprise — monitor for ACL token usage attempting operations in namespaces other than the token's own namespace ↗

• · Vulnerability affects HashiCorp Consul Enterprise only (not open-source Consul); fixed in versions 1.8.17, 1.9.11, and 1.10.4 — verify deployed version is patched ↗
• · The vulnerable permission level is the default operator:write — any ACL token granted this default permission in a multi-namespace deployment should be treated as potentially capable of cross-namespace privilege escalation until patched ↗

CVSS provenance

nvd v3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 6.5 MEDIUM AV:N/AC:L/Au:S/C:P/I:P/A:P

osv 8.8 HIGH

vendor_debian 8.8 LOW

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