GHSA-959q-32g8-vvp7 CVE-2017-12161
Moderate severity vulnerability that affects org.keycloak:keycloak-core
- Severity
- Medium
- The publisher's own rating, not a CVSS score
- Exploit chance (EPSS)
- 1.31%
- Chance of exploitation in the next 30 days. Higher than 70.59% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-602 Client-Side Enforcement of Server-Side Security
- Fix
3.4.2- Upgrade org.keycloak:keycloak-core to this version or later
Description
It was found that keycloak before 3.4.2 final would permit misuse of a client-side /etc/hosts entry to spoof a URL in a password reset request. An attacker could use this flaw to craft a malicious password reset request and gain a valid reset token, leading to information disclosure or further attacks.
Affected versions
Maven
| Package | Vulnerable | Fixed in |
|---|---|---|
| org.keycloak:keycloak-core | < 3.4.2 |
3.4.2 |
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.
org.keycloak:keycloak-core Maven → 3.4.2
- maven
<dependency><groupId>org.keycloak</groupId><artifactId>keycloak-core</artifactId><version>3.4.2</version></dependency>- gradle
implementation("org.keycloak:keycloak-core:3.4.2")
Weakness
CWE-602: Client-Side Enforcement of Server-Side Security
The product is composed of a server that relies on the client to implement a mechanism that is intended to protect the server.
How to prevent it
- Architecture and Design: For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server. Even though client-side checks provide minimal benefits with respect to server-side security, they are still useful. First, they can support intrusion detection. If the server receives input that should have been rejected by the client, then it may be an indication of an attack. Second, client-side error-checking can provide helpful feedback to the user about the expectations for valid input. Third, there may be a reduction in server-side processing time for accidental input errors, although this is typically a small savings.
- Architecture and Design: If some degree of trust is required between the two entities, then use integrity checking and strong authentication to ensure that the inputs are coming from a trusted source. Design the product so that this trust is managed in a centralized fashion, especially if there are complex or numerous communication channels, in order to reduce the risks that the implementer will mistakenly omit a check in a single code path.
References
Advisories
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-q4xq-445g-g6ch Keycloak allows cross-site scripting (XSS) | Low | Also affects org.keycloak:keycloak-core |
| GHSA-93ww-43rr-79v3 Keycloak mTLS Authentication Bypass via Reverse Proxy TLS Termination | High | Also affects org.keycloak:keycloak-core |
| GHSA-w97f-w3hq-36g2 Keycloak Denial of Service vulnerability | High | Also affects org.keycloak:keycloak-core |
| GHSA-xmmm-jw76-q7vg Keycloaks's One Time Passcode (OTP) is valid longer than expiration timeSeverity | Medium | Also affects org.keycloak:keycloak-core |
| GHSA-g4gc-rh26-m3p5 Keycloak Open Redirect vulnerability | Medium | Also affects org.keycloak:keycloak-core |
| GHSA-9vm7-v8wj-3fqw keycloak-core: open redirect via "form_post.jwt" JARM response mode | Medium | Also affects org.keycloak:keycloak-core |
| GHSA-5q66-v53q-pm35 Keycloak vulnerable to Plaintext Storage of User Password | High | Also affects org.keycloak:keycloak-core |
| GHSA-5cc8-pgp5-7mpm Keycloak Untrusted Certificate Validation vulnerability | Medium | Also affects org.keycloak:keycloak-core |
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