CVE-2021-30877
First published: Tue Aug 24 2021(Updated: )
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.0.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory.
Credit: Jeremy Brown hjy79425575 Jeremy Brown hjy79425575 Jeremy Brown Jeremy Brown Jeremy Brown hjy79425575 Jeremy Brown hjy79425575 Jeremy Brown Jeremy Brown cve@mitre.org Jeremy Brown hjy79425575 Jeremy Brown hjy79425575 Jeremy Brown Jeremy Brown
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apple Mac OS X | >=10.15<=10.15.6 | |
| Apple Mac OS X | =10.15.7 | |
| Apple Mac OS X | =10.15.7-security_update_2020 | |
| Apple Mac OS X | =10.15.7-security_update_2020-001 | |
| Apple Mac OS X | =10.15.7-security_update_2020-005 | |
| Apple Mac OS X | =10.15.7-security_update_2020-007 | |
| Apple Mac OS X | =10.15.7-security_update_2021-001 | |
| Apple Mac OS X | =10.15.7-security_update_2021-002 | |
| Apple Mac OS X | =10.15.7-security_update_2021-003 | |
| Apple Mac OS X | =10.15.7-security_update_2021-004 | |
| Apple Mac OS X | =10.15.7-security_update_2021-005 | |
| Apple Mac OS X | =10.15.7-security_update_2021-006 | |
| Apple Mac OS X | =10.15.7-supplemental_update | |
| Apple macOS | >=11.0<11.6.1 | |
| Apple macOS | >=12.0<12.0.1 | |
| Apple macOS Big Sur | <11.6.1 | 11.6.1 |
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Reference Links
- https://support.apple.com/en-us/HT212869 (Advisory)
- https://support.apple.com/en-us/HT212871 (Advisory)
- https://support.apple.com/en-us/HT212872 (Advisory)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2021-30873
- CVE-2021-30876
- CVE-2021-30879
- CVE-2021-30877
- CVE-2021-30880
- CVE-2021-30994
- CVE-2021-30907
- CVE-2021-30899
- CVE-2021-30931
- CVE-2021-30866
- CVE-2021-30917
- CVE-2021-30903
- CVE-2021-30905
- CVE-2021-30919
- CVE-2020-9846
- CVE-2021-30881
- CVE-2021-30923
- CVE-2021-30831
- CVE-2021-30840
- CVE-2021-30852
- CVE-2021-30895
- CVE-2021-30896
- CVE-2021-30933
- CVE-2021-30906
- CVE-2021-30867
- CVE-2021-30814
- CVE-2021-30922
- CVE-2021-30824
- CVE-2021-30901
- CVE-2021-30821
- CVE-2021-30883
- CVE-2021-30924
- CVE-2021-30886
- CVE-2021-30909
- CVE-2021-30916
- CVE-2021-30864
- CVE-2021-30813
- CVE-2021-31011
- CVE-2021-30904
- CVE-2021-30910
- CVE-2021-30911
- CVE-2021-30874
- CVE-2021-30808
- CVE-2021-30920
- CVE-2021-31004
- CVE-2021-31002
- CVE-2021-30868
- CVE-2021-30912
- CVE-2021-30913
- CVE-2021-30915
- CVE-2021-31005
- CVE-2021-31008
- CVE-2021-30897
- CVE-2021-30884
- CVE-2021-30818
- CVE-2021-30836
- CVE-2021-30846
- CVE-2021-30849
- CVE-2021-30848
- CVE-2021-30851
- CVE-2021-30809
- CVE-2021-30823
- CVE-2021-30887
- CVE-2021-30888
- CVE-2021-30889
- CVE-2021-30861
- CVE-2021-30890
- CVE-2021-30930
- CVE-2021-30908
- CVE-2021-30833
- CVE-2021-30892
- CVE-2021-30926
- CVE-2021-30834
- CVE-2021-30844
- CVE-2021-30900
Frequently Asked Questions
What is CVE-2021-30877?
CVE-2021-30877 is a vulnerability in AppleScript that allows an out-of-bounds read. It has been addressed with improved bounds checking.
What is the severity of CVE-2021-30877?
The severity of CVE-2021-30877 is not specified.
Which software versions are affected by CVE-2021-30877?
macOS Big Sur versions up to and excluding 11.6.1, Apple Catalina, and macOS Monterey versions up to and excluding 12.0.1 are affected by CVE-2021-30877.
How can I fix CVE-2021-30877?
To fix CVE-2021-30877, update your macOS Big Sur to version 11.6.1, or update your macOS Monterey to version 12.0.1.
Where can I find more information about CVE-2021-30877?
You can find more information about CVE-2021-30877 on the Apple support website at [https://support.apple.com/en-us/HT212871](https://support.apple.com/en-us/HT212871), [https://support.apple.com/en-us/HT212872](https://support.apple.com/en-us/HT212872), and [https://support.apple.com/en-us/HT212869](https://support.apple.com/en-us/HT212869).
- collector/apple-support
- alias/CVE-2021-30879
- alias/CVE-2021-30877
- alias/CVE-2021-30880
- collector/nvd-index
- agent/weakness
- agent/type
- agent/event
- agent/severity
- agent/author
- agent/first-publish-date
- agent/remedy
- agent/software-canonical-lookup-request
- agent/last-modified-date
- agent/references
- agent/softwarecombine
- agent/description
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/apple
- canonical/apple macos monterey
- canonical/apple catalina
- canonical/apple mac os x
- version/apple mac os x/10.15
- version/apple mac os x/10.15.6
- version/apple mac os x/10.15.7
- version/apple mac os x/10.15.7-security_update_2020
- version/apple mac os x/10.15.7-security_update_2020-001
- version/apple mac os x/10.15.7-security_update_2020-005
- version/apple mac os x/10.15.7-security_update_2020-007
- version/apple mac os x/10.15.7-security_update_2021-001
- version/apple mac os x/10.15.7-security_update_2021-002
- version/apple mac os x/10.15.7-security_update_2021-003
- version/apple mac os x/10.15.7-security_update_2021-004
- version/apple mac os x/10.15.7-security_update_2021-005
- version/apple mac os x/10.15.7-security_update_2021-006
- version/apple mac os x/10.15.7-supplemental_update
- canonical/apple macos
- version/apple macos/11.0
- version/apple macos/12.0
- canonical/apple macos big sur