CVE-2014-0224

high-risk
Published 2014-06-05

OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCipherSpec messages, which allows man-in-the-middle attackers to trigger use of a zero-length master key in certain OpenSSL-to-OpenSSL communications, and consequently hijack sessions or obtain sensitive information, via a crafted TLS handshake, aka the "CCS Injection" vulnerability.

Do I need to act?

!
93.0% chance of exploitation in next 30 days
EPSS score — higher than 7% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.4/10 High
NETWORK / HIGH complexity

References (606)

Third Party Advisory http://ccsinjection.lepidum.co.jp
and 586 more references
62
/ 100
high-risk
Severity 22/34 · High
Exploitability 20/34 · Moderate
Exposure 20/34 · Moderate