7.5
HIGH
CVE-2016-7444
GnuTLS OCSP Serial Length Validation Improper Checking
Description

The gnutls_ocsp_resp_check_crt function in lib/x509/ocsp.c in GnuTLS before 3.4.15 and 3.5.x before 3.5.4 does not verify the serial length of an OCSP response, which might allow remote attackers to bypass an intended certificate validation mechanism via vectors involving trailing bytes left by gnutls_malloc.

INFO

Published Date :

Sept. 27, 2016, 3:59 p.m.

Last Modified :

Jan. 5, 2018, 2:31 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2016-7444 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2016-7444 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 Gnu gnutls
: Total Affected Vendor : 1 | Products : 1
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-2016-7444.

URL Resource
http://lists.opensuse.org/opensuse-security-announce/2017-02/msg00005.html
http://www.securityfocus.com/bid/92893
https://access.redhat.com/errata/RHSA-2017:2292
https://gitlab.com/gnutls/gnutls/commit/964632f37dfdfb914ebc5e49db4fa29af35b1de9 Patch
https://lists.gnupg.org/pipermail/gnutls-devel/2016-September/008146.html Mailing List Third Party Advisory
https://www.gnutls.org/security.html 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).

Profile Photo
AMD1212/check_debsecan

Monitoring plugin to check for open CVE numbers against your local Debian packages

Shell

Updated: 3 years, 1 month ago
1 stars 2 fork 2 watcher
Born at : Feb. 27, 2017, 11:38 a.m. This repo has been linked 6 different CVEs too.

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

The following list is the news that have been mention CVE-2016-7444 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-7444 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]

    Jan. 05, 2018

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2017:2292 [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 25, 2017

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2017-02/msg00005.html [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 08, 2017

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/92893 [No Types Assigned]
  • Modified Analysis by [email protected]

    Sep. 28, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:gnu:gnutls:3.5.3:*:*:*:*:*:*:* *cpe:2.3:a:gnu:gnutls:3.5.2:*:*:*:*:*:*:* *cpe:2.3:a:gnu:gnutls:3.5.1:*:*:*:*:*:*:* *cpe:2.3:a:gnu:gnutls:3.5.0:*:*:*:*:*:*:* *cpe:2.3:a:gnu:gnutls:3.4.14:*:*:*:*:*:*:* (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://gitlab.com/gnutls/gnutls/commit/964632f37dfdfb914ebc5e49db4fa29af35b1de9 No Types Assigned https://gitlab.com/gnutls/gnutls/commit/964632f37dfdfb914ebc5e49db4fa29af35b1de9 Patch
    Changed Reference Type https://lists.gnupg.org/pipermail/gnutls-devel/2016-September/008146.html No Types Assigned https://lists.gnupg.org/pipermail/gnutls-devel/2016-September/008146.html Third Party Advisory, Mailing List
    Changed Reference Type https://www.gnutls.org/security.html No Types Assigned https://www.gnutls.org/security.html Vendor Advisory
    Added CWE CWE-264
  • Initial Analysis by [email protected]

    Sep. 27, 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-2016-7444 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-2016-7444 weaknesses.

Exploit Prediction

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

0.62 }} 0.00%

score

0.75432

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
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Scope
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