Skip to content
Fencer Intel
medium 6.5

CVE-2020-28053 json

Privilege Escalation in HashiCorp Consul

published 5y ago modified 2mo ago also BIT-consul-2020-28053 , EUVD-2024-0275 , GHSA-6m72-467w-94rh , GO-2024-2505

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

HashiCorp Consul and Consul Enterprise 1.2.0 up to 1.8.5 allowed operators with operator:read ACL permissions to read the Connect CA private key configuration. Fixed in 1.6.10, 1.7.10, and 1.8.6.

Patch / fix

  • go github.com/hashicorp/consul 1.6.10, 1.7.10, 1.8.6
  • bitnami consul 1.6.10, 1.7.10, 1.8.6
  • hashicorp consul 1.6.10, 1.7.10, 1.8.6
  • consul Debian 11 1.8.6+dfsg1-1

debian advisories DEBIAN-CVE-2020-28053

  • consul Arch Linux 1.9.1-1

arch linux advisories AVG-1294

Is CVE-2020-28053 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

1.45% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
go github.com/hashicorp/consul
>=1.2.0, <1.6.10
>=1.7.0, <1.7.10
>=1.8.0, <1.8.6
1.6.10
1.7.10
1.8.6
bitnami consul
>=1.2.0, <1.6.10
>=1.7.0, <1.7.10
>=1.8.0, <1.8.6
1.6.10
1.7.10
1.8.6

Classification

Weakness
  • CWE-732 Incorrect Permission Assignment for Critical Resource
  • CWE-863 Incorrect Authorization

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.