Vulnerability Details : CVE-2017-2521
An issue was discovered in certain Apple products. iOS before 10.3.2 is affected. Safari before 10.1.1 is affected. tvOS before 10.2.1 is affected. watchOS before 3.2.2 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.
Vulnerability category: OverflowMemory CorruptionExecute codeDenial of service
Products affected by CVE-2017-2521
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-2521
5.44%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 92 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-2521
| 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-2017-2521
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-2521
-
https://security.gentoo.org/glsa/201706-15
WebKitGTK+: Multiple vulnerabilities (GLSA 201706-15) — Gentoo securityThird Party Advisory
-
https://support.apple.com/HT207801
About the security content of tvOS 10.2.1 - Apple SupportVendor Advisory
-
http://www.securityfocus.com/bid/98456
WebKit CVE-2017-2521 Unspecified Memory Corruption VulnerabilityThird Party Advisory;VDB Entry
-
http://www.securitytracker.com/id/1038487
Apple Safari Multiple Bugs Let Remote Users Deny Service, Conduct Cross-Site Scripting Attacks, Spoof URLs, and Execute Arbitrary Code and Let Applications Bypass Code Signing Policy - SecurityTrackerThird Party Advisory;VDB Entry
-
https://support.apple.com/HT207798
About the security content of iOS 10.3.2 - Apple SupportVendor Advisory
-
https://support.apple.com/HT207800
About the security content of watchOS 3.2.2 - Apple SupportVendor Advisory
-
https://support.apple.com/HT207804
About the security content of Safari 10.1.1 - Apple SupportVendor Advisory
-
https://www.exploit-db.com/exploits/42103/
WebKit JSC - 'JSObject::ensureLength' ensureLengthSlow Check FailureExploit;Third Party Advisory;VDB Entry
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