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7.8
HIGH CVSS 3.0
CVE-2016-1751
Apple iOS Code Signing Bypass Vulnerability
Description

The kernel in Apple iOS before 9.3, tvOS before 9.2, and watchOS before 2.2 does not properly restrict the execute permission, which allows attackers to bypass a code-signing protection mechanism via a crafted app.

INFO

Published Date :

March 24, 2016, 1:59 a.m.

Last Modified :

April 12, 2025, 10:46 a.m.

Remotely Exploit :

No

Source :

[email protected]
Affected Products

The following products are affected by CVE-2016-1751 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 Apple iphone_os
2 Apple tvos
3 Apple watchos
: Total Affected Vendor : 1 | Products : 3
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.0 HIGH [email protected]
Solution
To address a code-signing bypass vulnerability, update your Apple operating systems.
  • Upgrade to iOS version 9.3 or later.
  • Upgrade to tvOS version 9.2 or later.
  • Upgrade to watchOS version 2.2 or later.
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-2016-1751.

URL Resource
http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html Mailing List Vendor Advisory
http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html Mailing List Vendor Advisory
http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html Mailing List Vendor Advisory
http://www.securitytracker.com/id/1035353 Third Party Advisory VDB Entry
https://support.apple.com/HT206166 Vendor Advisory
https://support.apple.com/HT206168 Vendor Advisory
https://support.apple.com/HT206169 Vendor Advisory
http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html Mailing List Vendor Advisory
http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html Mailing List Vendor Advisory
http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html Mailing List Vendor Advisory
http://www.securitytracker.com/id/1035353 Third Party Advisory VDB Entry
https://support.apple.com/HT206166 Vendor Advisory
https://support.apple.com/HT206168 Vendor Advisory
https://support.apple.com/HT206169 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-2016-1751 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-2016-1751 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-2016-1751 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2016-1751 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.apple.com/archives/security-announce/2016/Mar/msg00000.html
    Added Reference http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html
    Added Reference http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html
    Added Reference http://www.securitytracker.com/id/1035353
    Added Reference https://support.apple.com/HT206166
    Added Reference https://support.apple.com/HT206168
    Added Reference https://support.apple.com/HT206169
  • CVE Modified by [email protected]

    May. 14, 2024

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

    Mar. 25, 2019

    Action Type Old Value New Value
    Changed CVSS V2 (AV:N/AC:M/Au:N/C:C/I:C/A:C) (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html Vendor Advisory http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html Mailing List, Vendor Advisory
    Changed Reference Type http://www.securitytracker.com/id/1035353 No Types Assigned http://www.securitytracker.com/id/1035353 Third Party Advisory, VDB Entry
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html Vendor Advisory http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html Mailing List, Vendor Advisory
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html Vendor Advisory http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html Mailing List, Vendor Advisory
    Changed CPE Configuration OR *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions up to (including) 9.2.1 *cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* versions up to (including) 9.1 *cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* versions up to (including) 2.1 OR *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions up to (excluding) 9.3 *cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* versions up to (excluding) 9.2 *cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* versions up to (excluding) 2.2
  • CPE Deprecation Remap by [email protected]

    Mar. 08, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:apple:apple_tv:*:*:*:*:*:*:*:* versions from (including) 9.1 OR *cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* versions from (including) 9.1
  • CVE Modified by [email protected]

    Dec. 03, 2016

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1035353 [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 24, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:o:apple:watchos:2.1:*:*:*:*:*:*:* (and previous) *cpe:2.3:o:apple:apple_tv:9.1:*:*:*:*:*:*:* (and previous) *cpe:2.3:o:apple:iphone_os:9.2.1:*:*:*:*:*:*:* (and previous)
    Added CVSS V2 (AV:N/AC:M/Au:N/C:C/I:C/A:C)
    Added CVSS V3 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://support.apple.com/HT206166 No Types Assigned https://support.apple.com/HT206166 Advisory
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html No Types Assigned http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html Advisory
    Changed Reference Type https://support.apple.com/HT206169 No Types Assigned https://support.apple.com/HT206169 Advisory
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html No Types Assigned http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html Advisory
    Changed Reference Type https://support.apple.com/HT206168 No Types Assigned https://support.apple.com/HT206168 Advisory
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html No Types Assigned http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html Advisory
    Added CWE CWE-264
  • Initial Analysis by [email protected]

    Mar. 24, 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.
Vulnerability Scoring Details
Base CVSS Score: 7.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 6.8
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

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

0.23 }} 0.10%

score

0.46144

percentile