CVE-2016-5420

high

Description

curl and libcurl before 7.50.1 do not check the client certificate when choosing the TLS connection to reuse, which might allow remote attackers to hijack the authentication of the connection by leveraging a previously created connection with a different client certificate.

References

Advisories
More

http://www.debian.org/security/2016/dsa-3638

http://lists.opensuse.org/opensuse-updates/2016-09/msg00094.html

https://www.tenable.com/security/tns-2016-18

https://source.android.com/security/bulletin/2016-12-01.html

https://security.gentoo.org/glsa/201701-47

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3GQH4V3XAQ5Z53AMQRDEC3C3UHTW7QR/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLPXQQKURBQFM4XM6645VRPTOE2AWG33/

https://curl.haxx.se/docs/adv_20160803B.html

https://access.redhat.com/errata/RHSA-2018:3558

http://www.ubuntu.com/usn/USN-3048-1

http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.563059

http://www.securitytracker.com/id/1036739

http://www.securitytracker.com/id/1036537

http://www.securityfocus.com/bid/92309

http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html

http://rhn.redhat.com/errata/RHSA-2016-2957.html

http://rhn.redhat.com/errata/RHSA-2016-2575.html

http://lists.opensuse.org/opensuse-updates/2016-09/msg00011.html

Details

Source: Mitre, NVD

Published: 2016-08-10

Updated: 2025-04-12

Risk Information

CVSS v2

Base Score: 5

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

Severity: Medium

CVSS v3

Base Score: 7.5

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

Severity: High

EPSS

EPSS: 0.00941