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ID

VAR-202104-0753


CVE

CVE-2021-1879


TITLE

Apple iOS WebKit Cross-site scripting vulnerability

Trust: 0.6

sources: CNNVD: CNNVD-202103-1573

DESCRIPTION

This issue was addressed by improved management of object lifetimes. This issue is fixed in iOS 12.5.2, iOS 14.4.2 and iPadOS 14.4.2, watchOS 7.3.3. Processing maliciously crafted web content may lead to universal cross site scripting. Apple is aware of a report that this issue may have been actively exploited.. Apple iOS, iPadOS and watchOS universal XSS exploited in the wild. Versions of iPhone, iPad, iPod, Apple Watch are affected. Alternatively, on your watch, select "My Watch > General > About". -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 APPLE-SA-2021-03-26-1 iOS 14.4.2 and iPadOS 14.4.2 iOS 14.4.2 and iPadOS 14.4.2 addresses the following issue. Information about the security content is also available at https://support.apple.com/HT212256. WebKit Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation) Impact: Processing maliciously crafted web content may lead to universal cross site scripting. CVE-2021-1879: Clement Lecigne of Google Threat Analysis Group and Billy Leonard of Google Threat Analysis Group Installation note: This update is available through iTunes and Software Update on your iOS device, and will not appear in your computer's Software Update application, or in the Apple Downloads site. Make sure you have an Internet connection and have installed the latest version of iTunes from https://www.apple.com/itunes/ iTunes and Software Update on the device will automatically check Apple's update server on its weekly schedule. When an update is detected, it is downloaded and the option to be installed is presented to the user when the iOS device is docked. We recommend applying the update immediately if possible. Selecting Don't Install will present the option the next time you connect your iOS device. The automatic update process may take up to a week depending on the day that iTunes or the device checks for updates. You may manually obtain the update via the Check for Updates button within iTunes, or the Software Update on your device. To check that the iPhone, iPod touch, or iPad has been updated: * Navigate to Settings * Select General * Select About. The version after applying this update will be "iOS 14.4.2 and iPadOS 14.4.2". Information will also be posted to the Apple Security Updates web site: https://support.apple.com/kb/HT201222 This message is signed with Apple's Product Security PGP key, and details are available at: https://www.apple.com/support/security/pgp/ -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEbURczHs1TP07VIfuZcsbuWJ6jjAFAmBeODIACgkQZcsbuWJ6 jjDsnw//asz2IB0wWiWimjgw1aJroh2wVuw8DITpTWAt3mJS223D8p+fLDf2aqx8 UO7Oxjzdq03oJbByaoER624K2hmw915YXdFsfDBLN4TaSrQaUAst0SzzTMSzdA3t V1Uot8MaXpIidP+eYrnWWSFllQfqYIB9f/RYiZ07CKqjA8G95S821XMfjQ9CJkzW 9oQW92KUshjxR6rNN61+Tkvyh9Z9rT6a6D4OKlX4RoEcSyXHNbJmCFC2fx8Tw4xm BnP7vXyYLMOhBLiNX+L2q2ph96E57hV77IsSWNKkdtD83cygqtt+4u/W3wdnee+U yLGHRXe36vD1WvInb2b1EoDOWqC/CVCWf9gzES5HE58VN1CGfXiH4+kykEdO5HqN cJGZTFxibIReDrtpxhhW0zS6JUwFMXgVLlLPlLBqCFf2TGDWKe6XX0v7D0PgNqZX 94O1/DVYCadiUvSMnv6lkTertH+UJJ6MNu+nyTjtkX183JLOUsMlZyLxZ6mpM91y lF7NOIh9Dy5XgzU1sJhDqtMqhyvk7jxGIm6DES2xf5+YSHFqujGVPeHXUFq9AVbx aK/YYyT++Nf1tfyE1CsH6+M7IcsJe9wVmsKljZ5MXX7W4tBj9l3NwQnPAbejy+vb /msbc8BVIDBgZYgj2vThRy4IIYjn5on30BzRhTfB08H4bGkSbII= =0iO5 -----END PGP SIGNATURE-----

Trust: 1.35

sources: NVD: CVE-2021-1879 // VULHUB: VHN-376539 // VULMON: CVE-2021-1879 // PACKETSTORM: 162002 // PACKETSTORM: 162003 // PACKETSTORM: 161999

AFFECTED PRODUCTS

vendor:applemodel:watchosscope:ltversion:7.3.3

Trust: 1.0

vendor:applemodel:ipadosscope:ltversion:14.4.2

Trust: 1.0

vendor:applemodel:iphone osscope:ltversion:14.4.2

Trust: 1.0

vendor:applemodel:iphone osscope:gteversion:13.0

Trust: 1.0

vendor:applemodel:iphone osscope:ltversion:12.5.2

Trust: 1.0

sources: NVD: CVE-2021-1879

CVSS

SEVERITY

CVSSV2

CVSSV3

NVD: CVE-2021-1879
value: MEDIUM

Trust: 1.0

CNNVD: CNNVD-202103-1573
value: MEDIUM

Trust: 0.6

VULHUB: VHN-376539
value: MEDIUM

Trust: 0.1

VULMON: CVE-2021-1879
value: MEDIUM

Trust: 0.1

NVD:
severity: MEDIUM
baseScore: 4.3
vectorString: AV:N/AC:M/AU:N/C:N/I:P/A:N
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: NONE
integrityImpact: PARTIAL
availabilityImpact: NONE
exploitabilityScore: 8.6
impactScore: 2.9
acInsufInfo: FALSE
obtainAllPrivilege: FALSE
obtainUserPrivilege: FALSE
obtainOtherPrivilege: FALSE
userInteractionRequired: TRUE
version: 2.0

Trust: 1.0

VULHUB: VHN-376539
severity: MEDIUM
baseScore: 4.3
vectorString: AV:N/AC:M/AU:N/C:N/I:P/A:N
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: NONE
integrityImpact: PARTIAL
availabilityImpact: NONE
exploitabilityScore: 8.6
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.1

VULMON: CVE-2021-1879
severity: MEDIUM
baseScore: 4.3
vectorString: AV:N/AC:M/AU:N/C:N/I:P/A:N
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: NONE
integrityImpact: PARTIAL
availabilityImpact: NONE
exploitabilityScore: 8.6
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.1

NVD:
baseSeverity: MEDIUM
baseScore: 6.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: REQUIRED
scope: CHANGED
confidentialityImpact: LOW
integrityImpact: LOW
availabilityImpact: NONE
exploitabilityScore: 2.8
impactScore: 2.7
version: 3.1

Trust: 1.0

sources: VULHUB: VHN-376539 // VULMON: CVE-2021-1879 // CNNVD: CNNVD-202103-1573 // NVD: CVE-2021-1879

PROBLEMTYPE DATA

problemtype:CWE-79

Trust: 1.1

sources: VULHUB: VHN-376539 // NVD: CVE-2021-1879

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202103-1573

TYPE

xss

Trust: 0.9

sources: PACKETSTORM: 162002 // PACKETSTORM: 162003 // PACKETSTORM: 161999 // CNNVD: CNNVD-202103-1573

CONFIGURATIONS

sources:
            
            
            NVD: CVE-2021-1879

EXPLOIT AVAILABILITY
sources:
            
            
            VULHUB: VHN-376539

PATCH
title:Apple iOS WebKit Fixes for cross-site scripting vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqbyid.tag?id=147287
Trust: 0.6
title:The Registerurl:https://www.theregister.co.uk/2021/03/29/in_brief_security/
Trust: 0.2
title:PS4CVE20211879url:https://github.com/nazky/ps4cve20211879 
Trust: 0.1
title:NIST Bulk CVE Lookup by Jay Chen
Sample outputurl:https://github.com/jaychen2/nist-bulk-cve-lookup 
Trust: 0.1
title:Known Exploited Vulnerabilities Detectorurl:https://github.com/ostorlab/kev 
Trust: 0.1
title: - url:https://www.welivesecurity.com/2021/03/29/apple-rushes-patch-zero-day-flaw-ios-ipados/
Trust: 0.1
sources:
            
            
            VULMON: CVE-2021-1879 // 
            
            
            
            CNNVD: CNNVD-202103-1573

EXTERNAL IDS
db:NVDid:CVE-2021-1879
Trust: 2.1
db:PACKETSTORMid:162002
Trust: 0.8
db:CNNVDid:CNNVD-202103-1573
Trust: 0.7
db:AUSCERTid:ESB-2021.1067
Trust: 0.6
db:PACKETSTORMid:162003
Trust: 0.2
db:PACKETSTORMid:161999
Trust: 0.2
db:VULHUBid:VHN-376539
Trust: 0.1
db:VULMONid:CVE-2021-1879
Trust: 0.1
sources:
            
            
            VULHUB: VHN-376539 // 
            
            
            
            VULMON: CVE-2021-1879 // 
            
            
            
            PACKETSTORM: 162002 // 
            
            
            
            PACKETSTORM: 162003 // 
            
            
            
            PACKETSTORM: 161999 // 
            
            
            
            CNNVD: CNNVD-202103-1573 // 
            
            
            
            NVD: CVE-2021-1879

REFERENCES
url:https://support.apple.com/en-us/ht212256
Trust: 1.8
url:https://support.apple.com/en-us/ht212257
Trust: 1.8
url:https://support.apple.com/en-us/ht212258
Trust: 1.8
url:https://nvd.nist.gov/vuln/detail/cve-2021-1879
Trust: 0.9
url:https://vigilance.fr/vulnerability/apple-ios-cross-site-scripting-via-webkit-34954
Trust: 0.6
url:https://www.auscert.org.au/bulletins/esb-2021.1067
Trust: 0.6
url:https://packetstormsecurity.com/files/162002/apple-security-advisory-2021-03-26-2.html
Trust: 0.6
url:https://support.apple.com/kb/ht201222
Trust: 0.3
url:https://www.apple.com/support/security/pgp/
Trust: 0.3
url:https://www.apple.com/itunes/
Trust: 0.2
url:https://cwe.mitre.org/data/definitions/79.html
Trust: 0.1
url:https://github.com/nazky/ps4cve20211879
Trust: 0.1
url:https://nvd.nist.gov
Trust: 0.1
url:https://support.apple.com/tr-tr/ht212257
Trust: 0.1
url:https://support.apple.com/ht212257.
Trust: 0.1
url:https://support.apple.com/kb/ht204641
Trust: 0.1
url:https://support.apple.com/ht212258.
Trust: 0.1
url:https://support.apple.com/ht212256.
Trust: 0.1
sources:
            
            
            VULHUB: VHN-376539 // 
            
            
            
            VULMON: CVE-2021-1879 // 
            
            
            
            PACKETSTORM: 162002 // 
            
            
            
            PACKETSTORM: 162003 // 
            
            
            
            PACKETSTORM: 161999 // 
            
            
            
            CNNVD: CNNVD-202103-1573 // 
            
            
            
            NVD: CVE-2021-1879

CREDITS
Apple
Trust: 0.9
sources:
            
            
            PACKETSTORM: 162002 // 
            
            
            
            PACKETSTORM: 162003 // 
            
            
            
            PACKETSTORM: 161999 // 
            
            
            
            CNNVD: CNNVD-202103-1573

SOURCES
db:VULHUBid:VHN-376539
db:VULMONid:CVE-2021-1879
db:PACKETSTORMid:162002
db:PACKETSTORMid:162003
db:PACKETSTORMid:161999
db:CNNVDid:CNNVD-202103-1573
db:NVDid:CVE-2021-1879

LAST UPDATE DATE
2024-01-17T20:29:51.366000+00:00

SOURCES UPDATE DATE
db:VULHUBid:VHN-376539date:2023-01-09T00:00:00
db:VULMONid:CVE-2021-1879date:2023-01-09T00:00:00
db:CNNVDid:CNNVD-202103-1573date:2021-04-13T00:00:00
db:NVDid:CVE-2021-1879date:2023-01-09T16:41:59.350

SOURCES RELEASE DATE
db:VULHUBid:VHN-376539date:2021-04-02T00:00:00
db:VULMONid:CVE-2021-1879date:2021-04-02T00:00:00
db:PACKETSTORMid:162002date:2021-03-29T14:36:54
db:PACKETSTORMid:162003date:2021-03-29T14:37:43
db:PACKETSTORMid:161999date:2021-03-29T14:24:26
db:CNNVDid:CNNVD-202103-1573date:2021-03-29T00:00:00
db:NVDid:CVE-2021-1879date:2021-04-02T19:15:20.770