CVE-2017-7468 Details

CVE-2017-7468

Published: 2018-07-16
Last Modified: 2019-10-09
CVE Author: NIST National Vulnerability Database
CVE Assigner: cve@mitre.org
Summary

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.

Analysis
Common Vulnerability Score System v2.0
Severity Medium
Base Score 5/10
Exploit Score 10/10
Access Vector Network
Access Complexity Low
Authentication None
Impact Score 2.9/10
Confidentiality Impact None
Availability Impact None
Integrity Impact Partial
Vector String AV:N/AC:L/Au:N/C:N/I:P/A:N
Common Vulnerability Score System v3.1
Severity High
Base Score 7.5/10
Exploit Score 3.9/10
Access Vector Network
Access Complexity Low
Privileges Required None
Impact Score 3.6/10
Confidentiality Impact None
Availability Impact None
Integrity Impact High
Scope Unchanged
User Interaction None
Vector String CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Products Reported
CPE Vulnerable Start Excluding
cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:* Yes 7.52.0 -
References

http://www.securityfocus.com/bid/97962
http://www.securitytracker.com/id/1038341
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7468
https://curl.haxx.se/docs/adv_20170419.html
https://security.gentoo.org/glsa/201709-14

CVE ID
CVE-2017-7468
Published
2018-07-16
Modified
2019-10-09
CVSSv2.0
Medium
CVSSv3.1
High
PCI Compliance
Fail
US-CERT Alert
No
CWE
CWE-295

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