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Fencer Intel
high 7.5

CVE-2020-25201 json

Denial of service in HashiCorp Consul

published 6y ago modified 4mo ago also BIT-consul-2020-25201 , EUVD-2024-0243 , GHSA-496g-fr33-whrf , GO-2024-2501

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.6%
EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

HashiCorp Consul Enterprise version 1.7.0 up to 1.8.4 includes a namespace replication bug which can be triggered to cause denial of service via infinite Raft writes. Fixed in 1.7.9 and 1.8.5.

Patch / fix

  • go github.com/hashicorp/consul 1.7.9, 1.8.5
  • consul Debian 11 1.8.6+dfsg1-1

debian advisories DEBIAN-CVE-2020-25201

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Exploit prediction

2.61% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go github.com/hashicorp/consul
>=1.7.0, <1.7.9
>=1.8.0, <1.8.5
1.7.9
1.8.5
bitnami consul
>=1.7.0, <=1.8.4
 no fix listed

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-834 Excessive Iteration

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.