CVE-2017-5641

high-risk
Published 2017-12-28

Previous versions of Apache Flex BlazeDS (4.7.2 and earlier) did not restrict which types were allowed for AMF(X) object deserialization by default. During the deserialization process code is executed that for several known types has undesired side-effects. Other, unknown types may also exhibit such behaviors. One vector in the Java standard library exists that allows an attacker to trigger possibly further exploitable Java deserialization of untrusted data. Other known vectors in third party libraries can be used to trigger remote code execution.

Do I need to act?

!
48.5% chance of exploitation in next 30 days
EPSS score — higher than 52% 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
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Vendors

57
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 18/34 · Moderate
Exposure 7/34 · Low