Security readout for executives and security teams
Plain-English summary
This flaw affects Firebase Admin SDK for PHP versions 3.2.0 through 3.8.0. The token verifier reportedly failed to check token signatures, which could let an attacker forge identity claims and impersonate users. The source states it was fixed in 3.8.1.
Executive priority
Treat this as high priority where the vulnerable SDK protects user sessions or privileged application access. Remediation is version-based and should be straightforward, but impact could include account impersonation.
Technical view
CVE-2018-1000025 is an incorrect access control issue in src/Firebase/Auth/IdTokenVerifier.php. Affected versions did not verify JWT token signatures, allowing forged email and user ID claims. Public sources identify the fix in release 3.8.1 and pull request 151.
Likely exposure
Exposure is likely limited to PHP applications using the Jerome Gamez/Kreait Firebase Admin SDK versions 3.2.0 to 3.8.0 for authentication token verification.
Exploitation context
The CVE description says exploitation may require knowing a victim email address in most cases. The provided sources do not indicate CISA KEV listing or active exploitation.
Researcher notes
Evidence is limited to the CVE description and upstream GitHub fix references. No CVSS vector, CWE mapping, detailed exploit evidence, or operational mitigations are provided in the source bundle.
Mitigation direction
- Upgrade the Firebase Admin SDK for PHP to version 3.8.1 or later.
- Identify applications using versions 3.2.0 through 3.8.0.
- Review vendor release notes and pull request details for fix context.
- Prioritize systems relying on SDK token verification for authentication or authorization.
Validation and detection
- Inventory composer dependencies for kreait/firebase-php or the named Firebase Admin SDK package.
- Confirm no deployed application runs versions 3.2.0 through 3.8.0.
- Review authentication paths that depend on IdTokenVerifier.php.
- Check logs for suspicious identity changes or unexpected user impersonation indicators.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-1000025 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/kreait/firebase-php/releases/tag/3.8.1CVE reference · x_refsource_CONFIRM
- https://github.com/kreait/firebase-php/pull/151CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.