Consul: Premature Release of Resource During Expected Lifetime
CVE-2023-1297 is a high-severity premature release of resource during expected lifetime vulnerability in Consul from HashiCorp, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Consul versions: 1.14.0 through 1.14.5; 1.15.0 through 1.15.3. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.77% chance of exploitation within 30 days, higher than 56% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Consul you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on discuss.hashicorp.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| HashiCorp | Consul | 1.14.0 through 1.14.5; 1.15.0 through 1.15.3 | Not stated |
| HashiCorp | Consul Enterprise | 1.14.0 through 1.14.5; 1.15.0 through 1.15.3 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 4.9 | Medium | CNA (hashicorp.com) |
| CVSS 3.1 | 7.5 | High | NVD |
Official description
Consul and Consul Enterprise's cluster peering implementation contained a flaw whereby a peer cluster with service of the same name as a local service could corrupt Consul state, resulting in denial of service. This vulnerability was resolved in Consul 1.14.5, and 1.15.3
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Premature Release of Resource During Expected Lifetime
The product releases a resource that is still intended to be used by itself or another actor.
More Premature Release of Resource During Expected Lifetime vulnerabilities (CWE-826)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in Consul
- 7.5 High severity
- 7.5 High severity
- 8.8 High severity
- 7.1 High severity
- 8.3 High severity
- 7.5 High severity
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