CVE-2015-6997

Apple Security Advisory 2015-10-21-1

Severity Score

5.9

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The X.509 certificate-trust implementation in Apple iOS before 9.1 does not recognize that the kSecRevocationRequirePositiveResponse flag implies a revocation-checking requirement, which makes it easier for man-in-the-middle attackers to spoof endpoints by leveraging access to a revoked certificate.

La implementación del certificado de confianza X.509 en Apple iOS en versiones anteriores a 9.1 no reconoce que el indicador kSecRevocationRequirePositiveResponse implica un requerimiento de verificación de revocación, lo que hace más fácil para atacantes man-in-the-middle falsificar terminales aprovechando el acceso a un certificado revocado.

iOS 9.1 is now available and addresses arbitrary code execution, cookies being overwritten, heap based buffer overflow, and various other vulnerabilities.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-09-16 CVE Reserved
2015-10-21 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-254: 7PK - Security Features

CAPEC

References (6)

URL	Tag	Source
http://www.securityfocus.com/bid/77268	Vdb Entry
http://www.securitytracker.com/id/1033929	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.apple.com/archives/security-announce/2015/Dec/msg00002.html	2016-12-24
http://lists.apple.com/archives/security-announce/2015/Oct/msg00002.html	2016-12-24
https://support.apple.com/HT205370	2016-12-24
https://support.apple.com/HT205641	2016-12-24

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				<= 9.0.2 Search vendor "Apple" for product "Iphone Os" and version " <= 9.0.2"		-		Affected
Apple Search vendor "Apple"		Watchos Search vendor "Apple" for product "Watchos"				<= 2.0 Search vendor "Apple" for product "Watchos" and version " <= 2.0"		-		Affected