NTLM hash disclosure via external image request
Published May 12, 2020 · Updated Aug 4, 2024
Information disclosure in Ignite Realtime Spark 2.8.3 with ROAR on Windows allows remote attackers to capture NTLM hashes via chat. Spark renders an IMG element whose SRC points to an attacker-controlled external host; clicking it, or ROAR preloading it, makes Windows attach the user's NTLM hash to the HTTP request. The recipient must click the image unless ROAR automatically accesses it; captured hashes support offline cracking and account compromise.
Summary
What happened
Information disclosure in Ignite Realtime Spark 2.8.3 with ROAR on Windows allows remote attackers to capture NTLM hashes via chat. Spark renders an IMG element whose SRC points to an attacker-controlled external host; clicking it, or ROAR preloading it, makes Windows attach the user's NTLM hash to the HTTP request. The recipient must click the image unless ROAR automatically accesses it; captured hashes support offline cracking and account compromise.
The record
- CVE
- CVE-2020-12772
- Published
- May 12, 2020
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-200, T1187
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 12, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 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.
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
- Spark and ROAR NTLM hash capture procedurefunctional · demonstrated
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Technologies
Your stack
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Your stack
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