readfilemap.c in expat before 2.1.0 allows context-dependent attackers to cause a denial of service (file descriptor consumption) via a large number of crafted XML files.

A validation issue was addressed with improved input sanitization. This issue is fixed in iOS 13.5 and iPadOS 13.5, tvOS 13.4.5, watchOS 6.2.5. Processing a maliciously crafted text message may lead to application denial of service.

WebKit, as used in Apple Safari before 5.0.4 and iOS before 4.3, does not properly handle unspecified "cached resources," which allows remote attackers to cause a denial of service (resource unavailability) via a crafted web site that conducts a cache-poisoning attack.

MobileSafari in Apple iOS before 4.3 does not properly implement application launching through URL handlers, which allows remote attackers to cause a denial of service (persistent application crash) via crafted JavaScript code.

Apple Safari on iPhone OS 3.0.1 allows remote attackers to cause a denial of service (application crash) via a long tel: URL in the SRC attribute of an IFRAME element.

Apple Safari 3.2.2 and 4 Beta on Windows allows remote attackers to cause a denial of service (application crash) via an XML document containing many nested A elements.

A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. This issue is fixed in iOS 12.4, tvOS 12.4. A malicious application may be able to restrict access to websites.

An input validation issue was addressed with improved input validation. This issue is fixed in iOS 12.3, watchOS 5.2.1. Processing a maliciously crafted message may lead to a denial of service.

A denial of service issue was addressed with improved validation. This issue is fixed in iOS 12.4, tvOS 12.4, watchOS 5.3. Processing a maliciously crafted image may lead to a denial of service.

An input validation issue was addressed with improved input validation. This issue is fixed in iOS 12.3, watchOS 5.2.1. Processing a maliciously crafted message may lead to a denial of service.

A resource exhaustion issue was addressed with improved input validation. This issue is fixed in iOS 13.1 and iPadOS 13.1, macOS Catalina 10.15. Parsing a maliciously crafted iBooks file may lead to a persistent denial-of-service.

An issue was discovered in certain Apple products. iOS before 10.2 is affected. The issue involves the "Graphics Driver" component, which allows remote attackers to cause a denial of service via a crafted video.

An issue was discovered in certain Apple products. iOS before 10.2 is affected. macOS before 10.12.2 is affected. watchOS before 3.1.3 is affected. The issue involves the "Security" component, which allows man-in-the-middle attackers to cause a denial of service (application crash) via vectors related to OCSP responder URLs.

An issue was discovered in certain Apple products. macOS before 10.12 is affected. The issue involves the "Mail" component, which allows remote web servers to cause a denial of service via a crafted URL.

An issue was discovered in certain Apple products. iOS before 10.1 is affected. The issue involves the "Safari" component, which allows remote web servers to cause a denial of service via a crafted URL.

A resource exhaustion issue was addressed with improved input validation. This issue is fixed in iOS 15.2.1 and iPadOS 15.2.1. Processing a maliciously crafted HomeKit accessory name may cause a denial of service.

An issue was discovered in certain Apple products. macOS before 10.12.1 is affected. The issue involves the "ntfs" component, which misparses disk images and allows attackers to cause a denial of service via a crafted app.

YoruFukurou (NightOwl) before 2.85 relies on support for emoji skin-tone modifiers even though this support is missing from the CoreText CTFramesetter API on OS X 10.9, which allows remote attackers to cause a denial of service (application crash) via a crafted emoji character sequence.

An issue was discovered in certain Apple products. iOS before 11 is affected. The issue involves the "Messages" component. It allows remote attackers to cause a denial of service (crash) via a crafted image.

An issue was discovered in certain Apple products. iOS before 10.3.3 is affected. Safari before 10.1.2 is affected. The issue involves the "Safari Printing" component. It allows remote attackers to cause a denial of service (excessive print dialogs) via a crafted web site.

An issue was discovered in certain Apple products. macOS before 10.13 is affected. The issue involves the "AppSandbox" component. It allows attackers to cause a denial of service via a crafted app.

An issue was discovered in certain Apple products. iOS before 11 is affected. The issue involves the "iBooks" component. It allows remote attackers to cause a denial of service (persistent outage) via a crafted iBooks file.

An issue was discovered in certain Apple products. iOS before 10.3.2 is affected. macOS before 10.12.5 is affected. tvOS before 10.2.1 is affected. watchOS before 3.2.2 is affected. The issue involves the "CoreText" component. It allows remote attackers to cause a denial of service (application crash) via a crafted file.

An issue was discovered in certain Apple products. iOS before 10.3.2 is affected. Safari before 10.1.1 is affected. The issue involves the "Safari" component. It allows remote attackers to cause a denial of service (application crash) via a crafted web site that improperly interacts with the history menu.

Safari on Apple iPhone OS 3.1.3 for iPod touch allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a long string in a MARQUEE element.

The mod_proxy module in the Apache HTTP Server 2.4.x before 2.4.10, when a reverse proxy is enabled, allows remote attackers to cause a denial of service (child-process crash) via a crafted HTTP Connection header.

Launch Services in Apple Mac OS X 10.4.11 and 10.5 before 10.5.7 allows remote attackers to cause a denial of service (persistent Finder crash) via a crafted Mach-O executable that triggers an out-of-bounds memory read.

Apple iCal 3.0.1 on Mac OS X allows remote CalDAV servers, and user-assisted remote attackers, to cause a denial of service (NULL pointer dereference and application crash) or possibly execute arbitrary code via a .ics file containing (1) a large 16-bit integer on a TRIGGER line, or (2) a large integer in a COUNT field on an RRULE line.

Unspecified vulnerability in Apple AirPort Extreme Base Station Firmware 7.3.1 allows remote attackers to cause a denial of service (file sharing hang) via a crafted AFP request, related to "input validation."

An issue was discovered in certain Apple products. iOS before 11.4 is affected. macOS before 10.13.5 is affected. tvOS before 11.4 is affected. watchOS before 4.3.1 is affected. The issue involves the "Messages" component. It allows remote attackers to cause a denial of service via a crafted message.

A validation issue was addressed with improved logic. This issue affected versions prior to iOS 12.1, macOS Mojave 10.14.1, watchOS 5.1.

An issue was discovered in certain Apple products. iOS before 11.4 is affected. macOS before 10.13.5 is affected. tvOS before 11.4 is affected. watchOS before 4.3.1 is affected. The issue involves the "UIKit" component. It allows remote attackers to cause a denial of service via a crafted text file.

An issue was discovered in certain Apple products. iOS before 11.4 is affected. The issue involves the "Messages" component. It allows remote attackers to cause a denial of service via a crafted message.

A denial of service issue was addressed with improved validation. This issue affected versions prior to iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5.

An issue was discovered in certain Apple products. iOS before 11.4 is affected. Safari before 11.1.1 is affected. The issue involves the "Safari" component. It allows remote attackers to cause a denial of service (persistent Safari outage) via a crafted web site.

An issue was discovered in certain Apple products. iOS before 10.2.1 is affected. The issue involves the "Contacts" component. It allows remote attackers to cause a denial of service (application crash) via a crafted contact card.

An issue was discovered in certain Apple products. iOS before 11.1 is affected. tvOS before 11.1 is affected. watchOS before 4.1 is affected. The issue involves the "CoreText" component. It allows remote attackers to cause a denial of service (application crash) via a crafted text file.

A malicious server can serve excessive amounts of `Set-Cookie:` headers in a HTTP response to curl and curl < 7.84.0 stores all of them. A sufficiently large amount of (big) cookies make subsequent HTTP requests to this, or other servers to which the cookies match, create requests that become larger than the threshold that curl uses internally to avoid sending crazy large requests (1048576 bytes) and instead returns an error.This denial state might remain for as long as the same cookies are kept, match and haven't expired. Due to cookie matching rules, a server on `foo.example.com` can set cookies that also would match for `bar.example.com`, making it it possible for a "sister server" to effectively cause a denial of service for a sibling site on the same second level domain using this method.

WebCore in Apple WebKit build 18794 allows remote attackers to cause a denial of service (null dereference and application crash) via a TD element with a large number in the ROWSPAN attribute, as demonstrated by a crash of OmniWeb 5.5.3 on Mac OS X 10.4.8, a different vulnerability than CVE-2006-2019.

Smart Card Services in Apple Mac OS X before 10.9 does not properly implement certificate-revocation checks, which allows remote attackers to cause a denial of service (Smart Card usage outage) by interfering with the revocation-check procedure.

A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant and in certain WithSecure products whereby the scanning the aemobile component can crash the scanning engine. The exploit can be triggered remotely by an attacker.

A logic issue was addressed with improved validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. Processing a maliciously crafted image may lead to a denial of service.

A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catalina, Security Update 2021-004 Mojave. An attacker in a privileged network position may be able to perform denial of service.

Off-by-one error in the PDF functionality in Google Chrome before 25.0.1364.97 on Windows and Linux, and before 25.0.1364.99 on Mac OS X, allows remote attackers to cause a denial of service via a crafted document.

Net-SNMP 5.7.1 and earlier, when AgentX is registering to handle a MIB and processing GETNEXT requests, allows remote attackers to cause a denial of service (crash or infinite loop, CPU consumption, and hang) by causing the AgentX subagent to timeout.

The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on certificates that may have been obtained from untrusted sources. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).

libxslt 1.1.26 and earlier, as used in Google Chrome before 21.0.1180.89, does not properly manage memory, which might allow remote attackers to cause a denial of service (application crash) via a crafted XSLT expression that is not properly identified during XPath navigation, related to (1) the xsltCompileLocationPathPattern function in libxslt/pattern.c and (2) the xsltGenerateIdFunction function in libxslt/functions.c.

Google Chrome before 21.0.1180.57 on Mac OS X and Linux, and before 21.0.1180.60 on Windows and Chrome Frame, does not request user confirmation before continuing a large series of downloads, which allows user-assisted remote attackers to cause a denial of service (resource consumption) via a crafted web site.

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a null pointer dereference vulnerability when parsing a specially crafted PDF file. An unauthenticated attacker could leverage this vulnerability to achieve denial of service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. Processing a maliciously crafted image may lead to a denial of service.