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FreeBSD : cURL -- TLS session resumption client cert bypass (again) (3e2e9b44-25ce-11e7-a175-939b30e0836d)

high Nessus Plugin ID 99552

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Synopsis

The remote FreeBSD host is missing a security-related update.

Description

cURL security advisory :

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.

Solution

Update the affected package.

See Also

https://curl.haxx.se/docs/CVE-2017-7468.html

http://www.nessus.org/u?1696e24c

Plugin Details

Severity: High

ID: 99552

File Name: freebsd_pkg_3e2e9b4425ce11e7a175939b30e0836d.nasl

Version: 3.5

Type: local

Published: 4/21/2017

Updated: 1/4/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS v3

Risk Factor: High

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:curl, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 4/20/2017

Vulnerability Publication Date: 4/19/2017

Reference Information

CVE: CVE-2017-7468