CVE-2017-7468

Name: CVE-2017-7468
Creator: NVD / NIST
Published: 2018-07-16T13:29:00.287+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.86%

Last modified Jun 17, 2026

CVE-2017-7468 is a vulnerability of currently unknown severity. In curl and libcurl 7.52.0 to and including 7.53.1, libcurl would attempt to resume a TLS session even if the client certificate had changed. That is unacceptable since a server by specification is allowed to skip the client certificate check on resume, and may instead use the old identity which was established by the previous certificate (or no certificate). EPSS estimates a 1.86% chance of exploitation in the next 30 days.

Description

In curl and libcurl 7.52.0 to and including 7.53.1, libcurl would attempt to resume a TLS session even if the client certificate had changed. That is unacceptable since a server by specification is allowed to skip the client certificate check on resume, and may instead use the old identity which was established by the previous certificate (or no certificate). libcurl supports by default the use of TLS session id/ticket to resume previous TLS sessions to speed up subsequent TLS handshakes. They are used when for any reason an existing TLS connection couldn't be kept alive to make the next handshake faster. This flaw is a regression and identical to CVE-2016-5419 reported on August 3rd 2016, but affecting a different version range.

Metrics

EPSS Probability

1.86%

76.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Haxx	Libcurl	>= 7.52.0, <= 7.53.1

References

http://www.securityfocus.com/bid/97962Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038341Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7468Issue Tracking, Third Party Advisory
https://curl.haxx.se/docs/adv_20170419.htmlVendor Advisory
https://security.gentoo.org/glsa/201709-14Third Party Advisory
http://www.securityfocus.com/bid/97962Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038341Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7468Issue Tracking, Third Party Advisory
https://curl.haxx.se/docs/adv_20170419.htmlVendor Advisory
https://security.gentoo.org/glsa/201709-14Third Party Advisory

Timeline

Published: Jul 16, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-7468?

How severe is CVE-2017-7468?

Severity scoring for CVE-2017-7468 is pending analysis. The EPSS model estimates a 1.86% probability of exploitation in the next 30 days.

How do I fix CVE-2017-7468?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-7468?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST