CVE-2017-2521
published 2017-05-22CVE-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…
PriorityP262high8.8CVSS 3.0
AVNACLPRNUIRSUCHIHAH
EXPLOIT
EPSS
5.90%
92.3th percentile
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.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | ios | — | — |
| apple | iphone_os | < 10.3.2 | 10.3.2 |
| apple | mac_os_x | < 10.12.5 | 10.12.5 |
| apple | safari | — | — |
| apple | tvos | < 10.2.1 | 10.2.1 |
| apple | tvos | — | — |
| apple | watchos | < 3.2.2 | 3.2.2 |
| apple | watchos | — | — |
| debian | webkit2gtk | < webkit2gtk 2.16.3-2 (bookworm) | webkit2gtk 2.16.3-2 (bookworm) |
Detection & IOCsextracted from sources · hover to see the quote
- →Trigger condition: crafted JavaScript that calls Array.prototype with a very large length (e.g., 0x200000) combined with memory exhaustion to force ensureLengthSlow failure, then multiplies arr.length by 8 to trigger OOB access in JSObject::ensureLength ↗
- →PoC allocates large ArrayBuffers in a loop to exhaust memory before triggering the bug — monitor for rapid large ArrayBuffer allocations followed by Array length manipulation in WebKit/JSC contexts ↗
- →The vulnerability is in WebKit's JSC JSObject::ensureLength — setPublicLength is called even when ensureLengthSlow fails, allowing publicLength to exceed allocated memory size, resulting in OOB read/write ↗
- →Exploitation vector is processing maliciously crafted web content — any remote web page delivery to affected WebKit-based browsers (Safari < 10.1.1, iOS < 10.3.2, tvOS < 10.2.1, watchOS < 3.2.2) should be considered in-scope for detection ↗
- ·PoC was tested on Linux; exploitation behaviour on Apple platforms (iOS, Safari, tvOS, watchOS) may differ ↗
- ·The bug class is memory corruption in WebKit JSC; no network-level IOCs (domains, IPs, hashes) are present in any source — detection must rely on behavioural/JS heuristics ↗
CVSS provenance
nvdv3.08.8HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
osv8.8HIGH
vendor_debian8.8LOW
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Apple
CVE-2017-2521: iOS 10.3.2
vendor_apple·2017-05-15·CVSS 8.8
CVE-2017-2521 [HIGH] CVE-2017-2521: iOS 10.3.2
Apple Security Update: About the security content of iOS 10.3.2
Product: iOS
Version: 10.3.2
CVE: CVE-2017-2521
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed with improved memory handling.
Apple
CVE-2017-2521: tvOS 10.2.1
vendor_apple·2017-05-15·CVSS 8.8
CVE-2017-2521 [HIGH] CVE-2017-2521: tvOS 10.2.1
Apple Security Update: About the security content of tvOS 10.2.1
Product: tvOS
Version: 10.2.1
CVE: CVE-2017-2521
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed with improved memory handling.
Apple
CVE-2017-2521: watchOS 3.2.2
vendor_apple·2017-05-15·CVSS 8.8
CVE-2017-2521 [HIGH] CVE-2017-2521: watchOS 3.2.2
Apple Security Update: About the security content of watchOS 3.2.2
Product: watchOS
Version: 3.2.2
CVE: CVE-2017-2521
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed with improved memory handling.
Apple
CVE-2017-2521: Safari 10.1.1
vendor_apple·2017-05-15·CVSS 8.8
CVE-2017-2521 [HIGH] CVE-2017-2521: Safari 10.1.1
Apple Security Update: About the security content of Safari 10.1.1
Product: Safari
Version: 10.1.1
CVE: CVE-2017-2521
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed with improved memory handling.
Debian
CVE-2017-2521: webkit2gtk - An issue was discovered in certain Apple products. iOS before 10.3.2 is affected...
vendor_debian·2017·CVSS 8.8
CVE-2017-2521 [HIGH] CVE-2017-2521: webkit2gtk - An issue was discovered in certain Apple products. iOS before 10.3.2 is affected...
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.
Scope: local
bookworm: resolved (fixed in 2.16.3-2)
bullseye: resolved (fixed in 2.16.3-2)
forky: resolved (fixed in 2.16.3-2)
sid: resolved (fixed in 2.16.3-2)
trixie: resolved (fixed in 2.16.3-2)
GHSA
GHSA-9f8h-4vq6-qr4v: An issue was discovered in certain Apple products
ghsa_unreviewed·2022-05-14
CVE-2017-2521 [HIGH] CWE-119 GHSA-9f8h-4vq6-qr4v: An issue was discovered in certain Apple products
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.
OSV
CVE-2017-2521: An issue was discovered in certain Apple products
osv·2017-05-22·CVSS 8.8
CVE-2017-2521 [HIGH] CVE-2017-2521: An issue was discovered in certain Apple products
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.
No detection rules found.
arXiv
SOK: On the Analysis of Web Browser Security
arxiv_fulltext·2021-12-31
SOK: On the Analysis of Web Browser Security
: On the Analysis of Web Browser Security
fancyplain
Rev.
\ of LastPage
Jungwon Lim*,\;
Yonghwi Jin*^ ,\;
Mansour Alharthi,\;
Xiaokuan Zhang,\;
Jinho Jung,\;
Rajat Gupta,\;
Kuilin Li,\;
Daehee Jang^ ,\;
Taesoo Kim\;
Georgia Institute of Technology ^ Theori Inc. ^ Sungshin Women's University
## Abstract
Web browsers are integral parts of everyone's daily life.
They are commonly used
for security-critical and privacy sensitive tasks,
like banking transactions and checking medical records.
Unfortunately,
modern web browsers are
too complex to be bug free
( , 25 million lines of code in Chrome),
and their role as an interface to the cyberspace
makes them an attractive target for attacks.
Accordingly,
web browsers naturally
become an arena for demonstrating
advanced exploitation techni
arXiv
Rethinking Misalignment to Raise the Bar for Heap Pointer Corruption
arxiv_fulltext·2018-08-08
Rethinking Misalignment to Raise the Bar for Heap Pointer Corruption
Rethinking Misalignment to Raise the Bar for Heap Pointer Corruption
Daehee Jang
KAIST
[email protected]
Hojoon Lee
KAIST
[email protected]
Brent Byunghoon Kang
KAIST
[email protected]
Michael Shell
Georgia Institute of Technology
[email protected]
Homer Simpson
Twentieth Century Fox
[email protected]
James Kirk
and Montgomery Scott
Starfleet Academy
[email protected]
\@IEEEpubidpullup9
Permission to freely reproduce all or part
of this paper for noncommercial purposes is granted provided that
copies bear this notice and the full citation on the first
page. Reproduction for commercial purposes is strictly prohibited
without the prior written consent of the Internet Society, the
first-named author (for reproduction of an entire paper only), and
the
http://www.securityfocus.com/bid/98456http://www.securitytracker.com/id/1038487https://security.gentoo.org/glsa/201706-15https://support.apple.com/HT207798https://support.apple.com/HT207800https://support.apple.com/HT207801https://support.apple.com/HT207804https://www.exploit-db.com/exploits/42103/http://www.securityfocus.com/bid/98456http://www.securitytracker.com/id/1038487https://security.gentoo.org/glsa/201706-15https://support.apple.com/HT207798https://support.apple.com/HT207800https://support.apple.com/HT207801https://support.apple.com/HT207804https://www.exploit-db.com/exploits/42103/
2017-05-22
Published