CVE-2023-27587
Published: 13 March 2023
Summary
CVE-2023-27587 is a high-severity Generation of Error Message Containing Sensitive Information (CWE-209) vulnerability in Readtomyshoe Project Readtomyshoe. Its CVSS base score is 7.4 (High).
Operationally, ranked in the top 0.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
ReadtoMyShoe is a web application that allows users to upload articles for later listening via text-to-speech. Prior to commit 8533b01, the application exposed sensitive information in error messages when an error occurred during article addition. Specifically, errors originating from Google Cloud TTS requests included the full request URL containing the Google Cloud API key, corresponding to CWE-209 information exposure through an error message and carrying a CVSS 3.1 score of 7.4.
An unauthenticated remote attacker can trigger the condition by causing an error in the article upload flow that invokes the Google Cloud TTS service, thereby obtaining the exposed API key and achieving high-impact confidentiality compromise with changed scope.
The GitHub Security Advisory GHSA-23g5-r34j-mr8g and the referenced commit state that the issue is resolved in commit 8533b01. Remediation requires upgrading to the patched version, revoking the existing GCP API key, and generating a replacement; no workarounds are available.
The EPSS score reached a peak of 0.8885 with a current value of 0.8374, indicating sustained exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-31329
Vulnerability details
ReadtoMyShoe, a web app that lets users upload articles and listen to them later, generates an error message containing sensitive information prior to commit 8533b01. If an error occurs when adding an article, the website shows the user an error…
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message. If the error originates from the Google Cloud TTS request, then it will include the full URL of the request. The request URL contains the Google Cloud API key. This has been patched in commit 8533b01. Upgrading should be accompanied by deleting the current GCP API key and issuing a new one. There are no known workarounds.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Detects error messages that leak sensitive information as evidence of disclosure.
The control directly mitigates generation of error messages containing sensitive authentication details by requiring obscured feedback instead of verbose responses.
Misdirection allows generation of misleading error messages that withhold or falsify sensitive details.
Explicitly requires error messages to avoid including sensitive or exploitable details while still supporting corrective action.
Validation ensures error messages contain only expected, non-sensitive content and blocks leakage via verbose errors.
Fail-safe procedures can be defined to suppress or sanitize error output, reducing generation of messages that contain sensitive information.