Credential theft via base-domain autofill matching
Published Mar 8, 2023 · Updated Aug 2, 2024
Information disclosure in Bitwarden through 2023.2.1 allows remote attackers to steal stored credentials via a crafted subdomain. The browser extension's Base domain URI matcher compares only the top-level and second-level domains and offers the same login to attacker-controlled sibling subdomains, whose forms can receive the autofilled secret. Exposure requires a victim to visit the crafted page and use autofill; automatic theft without another fill action requires the non-default Auto-fill on page load setting.
Summary
What happened
Information disclosure in Bitwarden through 2023.2.1 allows remote attackers to steal stored credentials via a crafted subdomain. The browser extension's Base domain URI matcher compares only the top-level and second-level domains and offers the same login to attacker-controlled sibling subdomains, whose forms can receive the autofilled secret. Exposure requires a victim to visit the crafted page and use autofill; automatic theft without another fill action requires the non-default Auto-fill on page load setting.
The record
- CVE
- CVE-2023-27974
- Published
- Mar 8, 2023
- Updated
- Aug 2, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- T1555
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 8, 2023CVE publishedPublication date reported by the CVE source.
- Aug 2, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Flashpoint base-domain autofill proof of conceptfunctional · demonstrated
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Technologies
Your stack
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Your stack
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