GHSA-362v-wg5p-64w2 BIT-vault-2021-42135 CVE-2021-42135 GO-2022-0578
Incorrect Privilege Assignment in HashiCorp Vault
High
Go
- Severity
- 8.1 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 0.78%
- Chance of exploitation in the next 30 days. Higher than 55.95% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Fix
1.8.5- Upgrade github.com/hashicorp/vault to this version or later
Description
HashiCorp Vault and Vault Enterprise 1.8.x through 1.8.4 may have an unexpected interaction between glob-related policies and the Google Cloud secrets engine. Users may, in some situations, have more privileges than intended, e.g., a user with read permission for the /gcp/roleset/* path may be able to issue Google Cloud service account credentials.
Affected versions
Go
| Package | Vulnerable | Fixed in |
|---|---|---|
| github.com/hashicorp/vault | >= 1.8.0, <= 1.8.4 |
No fix yet |
| github.com/hashicorp/vault | >= 1.8.0, < 1.8.5 |
1.8.5 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
github.com/hashicorp/vault Go → 1.8.5
- go
go get github.com/hashicorp/vault@v1.8.5 && go mod tidy
Severity breakdown
CVSS 3.1 8.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Weakness
CWE-266: Incorrect Privilege Assignment
A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.
How to prevent it
- Architecture and Design, Operation: Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
- Architecture and Design, Operation: Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
CWE-863: Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
How to prevent it
- Architecture and Design: Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) [REF-229] to enforce the roles at the appropriate boundaries. Note that this approach may not protect against horizontal authorization, i.e., it will not protect a user from attacking others with the same role.
- Architecture and Design: Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records. For example, a database may restrict access for medical records to a specific database user, but each record might only be intended to be accessible to the patient and the patient's doctor [REF-7].
- Architecture and Design: Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, consider using authorization frameworks such as the JAAS Authorization Framework [REF-233] and the OWASP ESAPI Access Control feature [REF-45].
- Architecture and Design: For web applications, make sure that the access control mechanism is enforced correctly at the server side on every page. Users should not be able to access any unauthorized functionality or information by simply requesting direct access to that page. One way to do this is to ensure that all pages containing sensitive information are not cached, and that all such pages restrict access to requests that are accompanied by an active and authenticated session token associated with a user who has the required permissions to access that page.
- System Configuration, Installation: Use the access control capabilities of your operating system and server environment and define your access control lists accordingly. Use a "default deny" policy when defining these ACLs.
References
Advisories
Packages
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-88v5-9hxc-f85r HashiCorp Vault Vulnerable to Denial-of-Service via Unauthenticated Root Token Generation/Rekey Operations | High | Also affects github.com/hashicorp/vault |
| GHSA-8r5m-3f66-qpr3 HashiCorp Vault has Server-Side Request Forgery in ACME Challenge Validation via Attacker-Controlled DNS | High | Also affects github.com/hashicorp/vault |
| GHSA-72gw-fmmr-c4r4 HashiCorp Vault May Expose Tokens to Auth Plugins Due to Incorrect Header Sanitization | High | Also affects github.com/hashicorp/vault |
| GHSA-m2w4-8ggf-rj47 HashiCorp Vault has a KVv2 Metadata and Secret Deletion Policy Bypass that leads to Denial-of-Service | High | Also affects github.com/hashicorp/vault |
| GHSA-vp5w-xcfc-73wf Hashicorp Vault and Vault Enterprise vulnerable to a denial of service when processing JSON | High | Also affects github.com/hashicorp/vault |
| GHSA-9g4h-h484-3578 HashiCorp Vault and Vault Enterprise's AWS Auth method may be susceptible to authentication bypass | High | Also affects github.com/hashicorp/vault |
| GHSA-8f82-53h8-2p34 HashiCorp Vault Community Edition Denial of Service Though Complex JSON Payloads | High | Also affects github.com/hashicorp/vault |
| GHSA-7rx2-769v-hrwf HashiCorp Vault ldap auth method may not have correctly enforced MFA | High | Also affects github.com/hashicorp/vault |
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