CVE-2021-30789
published 2021-09-08CVE-2021-30789: An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7, Security…
PriorityP341high7.8CVSS 3.1
AVLACLPRNUIRSUCHIHAH
EPSS
1.25%
66.0th percentile
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7, Security Update 2021-004 Catalina. Processing a maliciously crafted font file may lead to arbitrary code execution.
Affected
16 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | ios | >= unspecified < 14.7 | 14.7 |
| apple | ios_14.7_and_ipados | — | — |
| apple | iphone_os | < 14.7 | 14.7 |
| apple | mac_os_x | — | — |
| apple | mac_os_x | 10.15 – 10.15.6 | — |
| apple | macos | < 11.5 | 11.5 |
| apple | macos | >= 11.0 < 11.5 | 11.5 |
| apple | macos | >= unspecified < 11.5 | 11.5 |
| apple | macos | >= unspecified < 14.7 | 14.7 |
| apple | macos | >= unspecified < 7.6 | 7.6 |
| apple | security_update_catalina | >= unspecified < 2021 | 2021 |
| apple | tvos | < 14.7 | 14.7 |
| apple | watchos | < 7.6 | 7.6 |
| msrc | cbl2_ntfs-3g_2022.5.17-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/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
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
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GHSA
GHSA-4x5p-qcrv-5jj7: An out-of-bounds read was addressed with improved input validation
ghsa_unreviewed·2022-05-24
CVE-2021-30789 [HIGH] CWE-125 GHSA-4x5p-qcrv-5jj7: An out-of-bounds read was addressed with improved input validation
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7, Security Update 2021-004 Catalina. Processing a maliciously crafted font file may lead to arbitrary code execution.
Red Hat
ntfs-3g: crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array
vendor_redhat·2022-05-26·CVSS 7.8
CVE-2022-30789 [HIGH] CWE-122 ntfs-3g: crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array
ntfs-3g: crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array
A crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array in NTFS-3G through 2021.8.22.
A vulnerability was found in NTFS-3G. Incorrect validation of NTFS metadata can result in a heap-based buffer overflow when processing a crafted NTFS image file or partition.
Package: libguestfs-winsupport (Red Hat Enterprise Linux 7) - Out of support scope
Package: virt:8.2/libguestfs-winsupport (Red Hat Enterprise Linux 8 Advanced Virtualization) - Will not fix
Package: virt:av/libguestfs-winsupport (Red Hat Enterprise Linux 8 Advanced Virtualization) - Will not fix
Package: virt-devel:8.2/libguestfs-winsupport (Red Hat Enterprise Linux 8 Advanced Virtualization) - W
Microsoft
A crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array in NTFS-3G through 2021.8.22.
vendor_msrc·2022-05-10·CVSS 7.8
CVE-2022-30789 [HIGH] CWE-787 A crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array in NTFS-3G through 2021.8.22.
A crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array in NTFS-3G through 2021.8.22.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
mitre: mitre
Customer Action Required:
Apple
CVE-2021-30789: iOS 14.7 and iPadOS 14.7
vendor_apple·CVSS 7.8
CVE-2021-30789 [HIGH] CVE-2021-30789: iOS 14.7 and iPadOS 14.7
Apple Security Update: About the security content of iOS 14.7 and iPadOS 14.7
Product: iOS 14.7 and iPadOS
Version: 14.7
CVE: CVE-2021-30789
Component: CoreText
Impact: Processing a maliciously crafted font file may lead to arbitrary code execution
Description: An out-of-bounds read was addressed with improved input validation.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://support.apple.com/en-us/HT212600https://support.apple.com/en-us/HT212601https://support.apple.com/en-us/HT212602https://support.apple.com/en-us/HT212604https://support.apple.com/en-us/HT212605https://support.apple.com/en-us/HT212600https://support.apple.com/en-us/HT212601https://support.apple.com/en-us/HT212602https://support.apple.com/en-us/HT212604https://support.apple.com/en-us/HT212605
2021-09-08
Published