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 :
April 20, 2025, 1:37 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
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.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.0 | HIGH | [email protected] |
Solution
- Update the affected mod_nss package.
- Update the affected mod_nss-debuginfo packages.
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 |
| 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 |
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:
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-2016-3099
weaknesses.
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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183102.html Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183129.html Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184345.html Added Reference http://rhn.redhat.com/errata/RHSA-2016-2602.html Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1319052 -
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:*:*:*:*:*:*:*
Vulnerability Scoring Details
Base CVSS Score: 7.5
Base CVSS Score: 5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.28 }} 0.05%
score
0.51061
percentile