CVE-2017-2476
published 2017-04-02CVE-2017-2476: An issue was discovered in certain Apple products. iOS before 10.3 is affected. Safari before 10.1 is affected. tvOS before 10.2 is affected. The issue…
PriorityP263high8.8CVSS 3.0
AVNACLPRNUIRSUCHIHAH
EXPLOIT
EPSS
6.47%
92.9th percentile
An issue was discovered in certain Apple products. iOS before 10.3 is affected. Safari before 10.1 is affected. tvOS before 10.2 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
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | ios | — | — |
| apple | iphone_os | < 10.3 | 10.3 |
| apple | safari | < 10.1 | 10.1 |
| apple | safari | — | — |
| apple | tvos | < 10.2 | 10.2 |
| apple | tvos | — | — |
| debian | webkit2gtk | < webkit2gtk 2.14.6-1 (bookworm) | webkit2gtk 2.14.6-1 (bookworm) |
Detection & IOCsextracted from sources · hover to see the quote
- →The vulnerability is a Use-After-Free in WebCore::toJS triggered via crafted web content; look for crashes or memory corruption originating from WebCore::NamedNodeMap::attribute() called through JSC property getter chains (llint_slow_path_get_by_id / customGetter) ↗
- →The UAF is triggered during a window load event handler; monitor for JavaScript that forces garbage collection (e.g. large allocation loops) immediately before accessing DOM NamedNodeMap attributes, which is the heap-spray/free primitive used in the PoC ↗
- →Crash stack anchor: WebCore::NamedNodeMap::attribute() is the use-after-free site; EDR/crash telemetry rules should flag WebContent process crashes involving this symbol on unpatched iOS < 10.3, Safari < 10.1, tvOS < 10.2 ↗
- →The freed object is a 1376-byte heap region; memory forensics or ASAN-based detection can key on use-after-free of a 1376-byte allocation within the WebContent XPC service process (com.apple.WebKit.WebContent) ↗
- →Exploitation occurs inside the sandboxed com.apple.WebKit.WebContent XPC service; process-level monitoring should watch for anomalous child-process spawning or sandbox escapes originating from com.apple.WebKit.WebContent.Development ↗
- ·Affected versions: iOS before 10.3, Safari before 10.1, tvOS before 10.2; WebKitGTK fixed in 2.14.6-1 on Debian. Detection hints above apply only to unpatched instances of these products. ↗
- ·On Debian/Linux (WebKitGTK), all stable branches (bookworm, bullseye, trixie, sid, forky) are resolved at version 2.14.6-1; no Linux-specific IOCs are present in the sources. ↗
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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Ubuntu
WebKitGTK+ vulnerabilities
vendor_ubuntu·2017-04-10
CVE-2016-9642 WebKitGTK+ vulnerabilities
Title: WebKitGTK+ vulnerabilities
Summary: Several security issues were fixed in WebKitGTK+.
A large number of security issues were discovered in the WebKitGTK+ Web and
JavaScript engines. If a user were tricked into viewing a malicious
website, a remote attacker could exploit a variety of issues related to web
browser security, including cross-site scripting attacks, denial of service
attacks, and arbitrary code execution.
Instructions: This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any applications
that use WebKitGTK+, such as Epiphany, to make all the necessary changes.
Apple
CVE-2017-2476: tvOS 10.2
vendor_apple·2017-03-27·CVSS 8.8
CVE-2017-2476 [HIGH] CVE-2017-2476: tvOS 10.2
Apple Security Update: About the security content of tvOS 10.2
Product: tvOS
Version: 10.2
CVE: CVE-2017-2476
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed through improved memory handling.
Apple
CVE-2017-2476: iOS 10.3
vendor_apple·2017-03-27·CVSS 8.8
CVE-2017-2476 [HIGH] CVE-2017-2476: iOS 10.3
Apple Security Update: About the security content of iOS 10.3
Product: iOS
Version: 10.3
CVE: CVE-2017-2476
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed through improved memory handling.
Apple
CVE-2017-2476: Safari 10.1
vendor_apple·2017-03-27·CVSS 8.8
CVE-2017-2476 [HIGH] CVE-2017-2476: Safari 10.1
Apple Security Update: About the security content of Safari 10.1
Product: Safari
Version: 10.1
CVE: CVE-2017-2476
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed through improved memory handling.
Debian
CVE-2017-2476: webkit2gtk - An issue was discovered in certain Apple products. iOS before 10.3 is affected. ...
vendor_debian·2017·CVSS 8.8
CVE-2017-2476 [HIGH] CVE-2017-2476: webkit2gtk - An issue was discovered in certain Apple products. iOS before 10.3 is affected. ...
An issue was discovered in certain Apple products. iOS before 10.3 is affected. Safari before 10.1 is affected. tvOS before 10.2 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 2.14.6-1)
bullseye: resolved (fixed in 2.14.6-1)
forky: resolved (fixed in 2.14.6-1)
sid: resolved (fixed in 2.14.6-1)
trixie: resolved (fixed in 2.14.6-1)
GHSA
GHSA-4hmr-mg3j-37m6: An issue was discovered in certain Apple products
ghsa_unreviewed·2022-05-14
CVE-2017-2476 [HIGH] CWE-119 GHSA-4hmr-mg3j-37m6: An issue was discovered in certain Apple products
An issue was discovered in certain Apple products. iOS before 10.3 is affected. Safari before 10.1 is affected. tvOS before 10.2 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-2017-2476: An issue was discovered in certain Apple products
osv·2017-04-02·CVSS 8.8
CVE-2017-2476 [HIGH] CVE-2017-2476: An issue was discovered in certain Apple products
An issue was discovered in certain Apple products. iOS before 10.3 is affected. Safari before 10.1 is affected. tvOS before 10.2 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.
No writeups or analysis indexed.
http://www.securityfocus.com/bid/97130http://www.securitytracker.com/id/1038137https://bugs.chromium.org/p/project-zero/issues/detail?id=1114https://security.gentoo.org/glsa/201706-15https://support.apple.com/HT207600https://support.apple.com/HT207601https://support.apple.com/HT207617https://www.exploit-db.com/exploits/41814/http://www.securityfocus.com/bid/97130http://www.securitytracker.com/id/1038137https://bugs.chromium.org/p/project-zero/issues/detail?id=1114https://security.gentoo.org/glsa/201706-15https://support.apple.com/HT207600https://support.apple.com/HT207601https://support.apple.com/HT207617https://www.exploit-db.com/exploits/41814/
2017-04-02
Published