Is CVE-2017-7658 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 21%.

What products does CVE-2017-7658 affect?

Tracked products affected include Eclipse Jetty. Check the version you run to see whether it is affected.

How do I fix CVE-2017-7658?

Apply the vendor fix promptly. Upgrade affected products to a fixed version.

CVE-2017-7658

Q: What is CVE-2017-7658?

CVE-2017-7658 is a critical-severity software vulnerability (CWE-444) with a CVSS score of 9.8. In Eclipse Jetty Server, versions 9.2.x and older, 9.3.x (all non HTTP/1.x configurations), and 9.4.x (all HTTP/1.x configurations), when presented with two content-lengths headers, Jetty ignored the second. When presented with a content-le

CRITICAL severity · CVSS 9.8 · CWE-444

9.8CVSS CRITICAL

Summary

In Eclipse Jetty Server, versions 9.2.x and older, 9.3.x (all non HTTP/1.x configurations), and 9.4.x (all HTTP/1.x configurations), when presented with two content-lengths headers, Jetty ignored the second. When presented with a content-length and a chunked encoding header, the content-length was ignored (as per RFC 2616). If an intermediary decided on the shorter length, but still passed on the longer body, then body content could be interpreted by Jetty as a pipelined request. If the intermediary was imposing authorization, the fake pipelined request would bypass that authorization.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Exploit probability (EPSS)21%

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

Eclipse Jetty

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

CVE-2017-7658

Summary

Impact & exploitability

Affected products we track (1)

Recommendation

Additional information