Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-30858

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

Published

2021-08-24T19:15:14.253

Last Modified

2025-04-02T16:58:58.170

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Primary
CWE-416
Type: Secondary
CWE-416

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	apple	ipados	< 14.8	Yes
Operating System	apple	iphone_os	< 12.5.5	Yes
Operating System	apple	iphone_os	< 14.8	Yes
Operating System	apple	macos	< 11.6	Yes
Operating System	fedoraproject	fedora	33	Yes
Operating System	fedoraproject	fedora	34	Yes
Operating System	debian	debian_linux	10.0	Yes
Operating System	debian	debian_linux	11.0	Yes

References

http://seclists.org/fulldisclosure/2021/Sep/25 Mailing List, Third Party Advisory ([email protected])
http://seclists.org/fulldisclosure/2021/Sep/27 Mailing List, Third Party Advisory ([email protected])
http://seclists.org/fulldisclosure/2021/Sep/29 Mailing List, Third Party Advisory ([email protected])
http://seclists.org/fulldisclosure/2021/Sep/38 Mailing List, Third Party Advisory ([email protected])
http://seclists.org/fulldisclosure/2021/Sep/39 Mailing List, Third Party Advisory ([email protected])
http://seclists.org/fulldisclosure/2021/Sep/50 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/09/20/1 Mailing List ([email protected])
http://www.openwall.com/lists/oss-security/2021/10/26/9 Mailing List ([email protected])
http://www.openwall.com/lists/oss-security/2021/10/27/1 Mailing List ([email protected])
http://www.openwall.com/lists/oss-security/2021/10/27/2 Mailing List ([email protected])
http://www.openwall.com/lists/oss-security/2021/10/27/4 Mailing List ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BO6DMTHZR57JDBOXPSNR2MKDMCRWV265/ Release Notes ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XYNV7ASK4LQVAUMJXNXBS3Z7RVDQ2N3W/ Release Notes ([email protected])
https://support.apple.com/en-us/HT212804 Third Party Advisory ([email protected])
https://support.apple.com/en-us/HT212807 Third Party Advisory ([email protected])
https://support.apple.com/kb/HT212824 Third Party Advisory ([email protected])
https://www.debian.org/security/2021/dsa-4975 Mailing List, Third Party Advisory ([email protected])
https://www.debian.org/security/2021/dsa-4976 Mailing List, Third Party Advisory ([email protected])
http://seclists.org/fulldisclosure/2021/Sep/25 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2021/Sep/27 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2021/Sep/29 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2021/Sep/38 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2021/Sep/39 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2021/Sep/50 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/09/20/1 Mailing List (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/10/26/9 Mailing List (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/10/27/1 Mailing List (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/10/27/2 Mailing List (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/10/27/4 Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BO6DMTHZR57JDBOXPSNR2MKDMCRWV265/ Release Notes (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XYNV7ASK4LQVAUMJXNXBS3Z7RVDQ2N3W/ Release Notes (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/en-us/HT212804 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/en-us/HT212807 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/kb/HT212824 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2021/dsa-4975 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2021/dsa-4976 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)