7.5
HIGH
CVE-2016-5420
"curl and libcurl TLS Connection Hijacking Vulnerability"
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.

INFO

Published Date :

Aug. 10, 2016, 2:59 p.m.

Last Modified :

Nov. 7, 2023, 2:33 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2016-5420 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Haxx curl
2 Haxx libcurl
1 Debian debian_linux
1 Opensuse leap
: Total Affected Vendor : 3 | Products : 4
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2016-5420.

URL Resource
http://lists.opensuse.org/opensuse-updates/2016-09/msg00011.html
http://lists.opensuse.org/opensuse-updates/2016-09/msg00094.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2575.html
http://rhn.redhat.com/errata/RHSA-2016-2957.html
http://www.debian.org/security/2016/dsa-3638 Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
http://www.securityfocus.com/bid/92309
http://www.securitytracker.com/id/1036537
http://www.securitytracker.com/id/1036739
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.563059
http://www.ubuntu.com/usn/USN-3048-1
https://access.redhat.com/errata/RHSA-2018:3558
https://curl.haxx.se/docs/adv_20160803B.html Mitigation Patch Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLPXQQKURBQFM4XM6645VRPTOE2AWG33/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3GQH4V3XAQ5Z53AMQRDEC3C3UHTW7QR/
https://security.gentoo.org/glsa/201701-47
https://source.android.com/security/bulletin/2016-12-01.html
https://www.tenable.com/security/tns-2016-18

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-5420 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-5420 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLPXQQKURBQFM4XM6645VRPTOE2AWG33/ [No types assigned]
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3GQH4V3XAQ5Z53AMQRDEC3C3UHTW7QR/ [No types assigned]
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/K3GQH4V3XAQ5Z53AMQRDEC3C3UHTW7QR/
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/GLPXQQKURBQFM4XM6645VRPTOE2AWG33/
  • CVE Modified by [email protected]

    Nov. 13, 2018

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2018:3558 [No Types Assigned]
  • CPE Deprecation Remap by [email protected]

    Oct. 30, 2018

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:novell:leap:42.1:*:*:*:*:*:*:* OR *cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 17, 2018

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jan. 05, 2018

    Action Type Old Value New Value
    Added Reference http://rhn.redhat.com/errata/RHSA-2016-2957.html [No Types Assigned]
    Added Reference http://rhn.redhat.com/errata/RHSA-2016-2575.html [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 13, 2017

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1036739 [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 01, 2017

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201701-47 [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 01, 2017

    Action Type Old Value New Value
    Added Reference https://www.tenable.com/security/tns-2016-18 [No Types Assigned]
  • CVE Modified by [email protected]

    Jan. 20, 2017

    Action Type Old Value New Value
    Added Reference https://source.android.com/security/bulletin/2016-12-01.html [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 28, 2016

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-updates/2016-09/msg00011.html [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/K3GQH4V3XAQ5Z53AMQRDEC3C3UHTW7QR/ [No Types Assigned]
    Added Reference http://www.securityfocus.com/bid/92309 [No Types Assigned]
    Added Reference http://www.securitytracker.com/id/1036537 [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/GLPXQQKURBQFM4XM6645VRPTOE2AWG33/ [No Types Assigned]
    Added Reference http://www.ubuntu.com/usn/USN-3048-1 [No Types Assigned]
    Added Reference http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.563059 [No Types Assigned]
  • Modified Analysis by [email protected]

    Oct. 06, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:a:haxx:libcurl:7.50.0:*:*:*:*:*:*:* (and previous) Configuration 1 OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:a:haxx:libcurl:7.50.0:*:*:*:*:*:*:* (and previous) Configuration 3 OR *cpe:2.3:o:novell:leap:42.1:*:*:*:*:*:*:*
    Changed Reference Type http://lists.opensuse.org/opensuse-updates/2016-09/msg00094.html No Types Assigned http://lists.opensuse.org/opensuse-updates/2016-09/msg00094.html Third Party Advisory
  • Initial Analysis by [email protected]

    Oct. 06, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:a:haxx:libcurl:7.50.0:*:*:*:*:*:*:* (and previous) Configuration 1 OR *cpe:2.3:o:novell:leap:42.1:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:a:haxx:libcurl:7.50.0:*:*:*:*:*:*:* (and previous) Configuration 3 OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
    Changed Reference Type http://lists.opensuse.org/opensuse-updates/2016-09/msg00094.html No Types Assigned http://lists.opensuse.org/opensuse-updates/2016-09/msg00094.html Third Party Advisory
  • CVE Modified by [email protected]

    Oct. 05, 2016

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-updates/2016-09/msg00094.html
  • Modified Analysis by [email protected]

    Aug. 12, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:a:haxx:libcurl:7.50.0:*:*:*:*:*:*:* (and previous)
    Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:P/A:N)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type https://curl.haxx.se/docs/adv_20160803B.html No Types Assigned https://curl.haxx.se/docs/adv_20160803B.html Mitigation, Vendor Advisory, Patch
    Changed Reference Type http://www.debian.org/security/2016/dsa-3638 No Types Assigned http://www.debian.org/security/2016/dsa-3638 Third Party Advisory
    Added CWE CWE-285
  • Initial Analysis by [email protected]

    Aug. 11, 2016

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Aug. 11, 2016

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Aug. 11, 2016

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-5420 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2016-5420 weaknesses.

CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs Accessing Functionality Not Properly Constrained by ACLs CAPEC-5: Blue Boxing Blue Boxing CAPEC-13: Subverting Environment Variable Values Subverting Environment Variable Values CAPEC-17: Using Malicious Files Using Malicious Files CAPEC-39: Manipulating Opaque Client-based Data Tokens Manipulating Opaque Client-based Data Tokens CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-51: Poison Web Service Registry Poison Web Service Registry CAPEC-59: Session Credential Falsification through Prediction Session Credential Falsification through Prediction CAPEC-60: Reusing Session IDs (aka Session Replay) Reusing Session IDs (aka Session Replay) CAPEC-76: Manipulating Web Input to File System Calls Manipulating Web Input to File System Calls CAPEC-77: Manipulating User-Controlled Variables Manipulating User-Controlled Variables CAPEC-87: Forceful Browsing Forceful Browsing CAPEC-104: Cross Zone Scripting Cross Zone Scripting CAPEC-127: Directory Indexing Directory Indexing CAPEC-402: Bypassing ATA Password Security Bypassing ATA Password Security CAPEC-647: Collect Data from Registries Collect Data from Registries CAPEC-668: Key Negotiation of Bluetooth Attack (KNOB) Key Negotiation of Bluetooth Attack (KNOB)
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.50 }} 0.00%

score

0.72578

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: