Vulnerability Name:

CVE-2017-2491 (CCN-125634)

Assigned:2016-12-01
Published:2017-03-17
Updated:2019-10-03
Summary:Use after free vulnerability in the String.replace method JavaScriptCore in Apple Safari in iOS before 10.3 allows remote attackers to execute arbitrary code via a crafted web page, or a crafted file.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
6.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L)
5.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
6.5 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-416
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2017-2491

Source: BID
Type: Third Party Advisory, VDB Entry
98316

Source: CCN
Type: BID-98316
Apple Safari CVE-2017-2491 Use After Free Remote Code Execution Vulnerability

Source: MISC
Type: Third Party Advisory, VDB Entry
http://www.zerodayinitiative.com/advisories/ZDI-17-321

Source: XF
Type: UNKNOWN
apple-safari-cve20172491-code-exec(125634)

Source: CCN
Type: Apple security document HT207617
About the security content of iOS 10.3

Source: CONFIRM
Type: Vendor Advisory
https://support.apple.com/en-us/HT207617

Source: EXPLOIT-DB
Type: UNKNOWN
41964

Source: CCN
Type: ZDI-17-321
(Pwn2Own) Apple Safari String replace Use-After-Free Remote Code Execution Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/o:apple:iphone_os:*:*:*:*:*:*:*:* (Version <= 10.2.1)

    • Configuration CCN 1:
  • cpe:/a:apple:safari:*:*:*:*:*:*:*:*
  • OR cpe:/o:apple:mac_os_x:10.10.4:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    apple iphone os *
    apple safari *
    apple mac os x 10.10.4