Vulnerability Details : CVE-2017-2491
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.
Vulnerability category: Memory CorruptionExecute code
Products affected by CVE-2017-2491
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-2491
2.33%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 90 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-2491
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2017-2491
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-2491
-
http://www.zerodayinitiative.com/advisories/ZDI-17-321
ZDI-17-321 | Zero Day InitiativeThird Party Advisory;VDB Entry
-
http://www.securityfocus.com/bid/98316
Apple Safari CVE-2017-2491 Use After Free Remote Code Execution VulnerabilityThird Party Advisory;VDB Entry
-
https://www.exploit-db.com/exploits/41964/
Apple Safari 10.0.3 - 'JSC::CachedCall' Use-After-Free
-
https://support.apple.com/en-us/HT207617
About the security content of iOS 10.3 - Apple SupportVendor Advisory
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