7.5
HIGH
CVE-2016-3099
Red Hat Enterprise Linux NS SSL/TLS Cipher Downgrade
Description

mod_ns in Red Hat Enterprise Linux Desktop 7, Red Hat Enterprise Linux HPC Node 7, Red Hat Enterprise Linux Server 7, and Red Hat Enterprise Linux Workstation 7 allows remote attackers to force the use of ciphers that were not intended to be enabled.

INFO

Published Date :

June 8, 2017, 7:29 p.m.

Last Modified :

Feb. 13, 2023, 4:50 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2016-3099 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 Redhat enterprise_linux_desktop
2 Redhat enterprise_linux_server
3 Redhat enterprise_linux_workstation
4 Redhat enterprise_linux_hpc_node
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-2016-3099.

URL Resource
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183102.html Mailing List Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183129.html Mailing List Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184345.html Mailing List Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2602.html Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1319052 Issue Tracking Vendor Advisory

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-2016-3099 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-3099 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]

    Feb. 13, 2023

    Action Type Old Value New Value
    Changed Description A flaw was found in the way mod_nss parsed certain OpenSSL-style cipher strings. As a result, mod_nss could potentially use ciphers that were not intended to be enabled. mod_ns in Red Hat Enterprise Linux Desktop 7, Red Hat Enterprise Linux HPC Node 7, Red Hat Enterprise Linux Server 7, and Red Hat Enterprise Linux Workstation 7 allows remote attackers to force the use of ciphers that were not intended to be enabled.
    Removed CVSS V2 Red Hat, Inc. (AV:L/AC:M/Au:N/C:N/I:P/A:N)
    Removed Reference https://access.redhat.com/errata/RHSA-2016:2602 [No Types Assigned]
    Removed Reference https://access.redhat.com/security/cve/CVE-2016-3099 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 02, 2023

    Action Type Old Value New Value
    Changed Description mod_ns in Red Hat Enterprise Linux Desktop 7, Red Hat Enterprise Linux HPC Node 7, Red Hat Enterprise Linux Server 7, and Red Hat Enterprise Linux Workstation 7 allows remote attackers to force the use of ciphers that were not intended to be enabled. A flaw was found in the way mod_nss parsed certain OpenSSL-style cipher strings. As a result, mod_nss could potentially use ciphers that were not intended to be enabled.
    Added CVSS V2 Red Hat, Inc. (AV:L/AC:M/Au:N/C:N/I:P/A:N)
    Added Reference https://access.redhat.com/security/cve/CVE-2016-3099 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2016:2602 [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 16, 2017

    Action Type Old Value New Value
    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 http://rhn.redhat.com/errata/RHSA-2016-2602.html No Types Assigned http://rhn.redhat.com/errata/RHSA-2016-2602.html Vendor Advisory
    Changed Reference Type http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183102.html No Types Assigned http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183102.html Mailing List, Third Party Advisory
    Changed Reference Type http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184345.html No Types Assigned http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184345.html Mailing List, Third Party Advisory
    Changed Reference Type http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183129.html No Types Assigned http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183129.html Mailing List, Third Party Advisory
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1319052 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1319052 Issue Tracking, Vendor Advisory
    Added CWE CWE-327
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
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-2016-3099 is associated with the following CWEs:

Exploit Prediction

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

0.49 }} 0.06%

score

0.72428

percentile

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