medium
6.5
CWE
20 190
Advisory Published
CVE Published
Updated

CVE-2021-1878: Input Validation

First published: Mon Apr 26 2021(Updated: )

An integer overflow was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. An attacker in a privileged network position may be able to leak sensitive user information.

Credit: Aleksandar Nikolic Cisco TalosAleksandar Nikolic Cisco Talos product-security@apple.com Aleksandar Nikolic Cisco Talos

Affected SoftwareAffected VersionHow to fix
Apple macOS<11.3
11.3
macOS Catalina
macOS Mojave
Apple iOS and macOS>=10.14<=10.14.5
Apple iOS and macOS>=10.15<=10.15.5
Apple iOS and macOS=10.14.6
Apple iOS and macOS=10.14.6-security_update_2019-001
Apple iOS and macOS=10.14.6-security_update_2019-002
Apple iOS and macOS=10.14.6-security_update_2019-004
Apple iOS and macOS=10.14.6-security_update_2019-005
Apple iOS and macOS=10.14.6-security_update_2019-006
Apple iOS and macOS=10.14.6-security_update_2019-007
Apple iOS and macOS=10.14.6-security_update_2020-001
Apple iOS and macOS=10.14.6-security_update_2020-002
Apple iOS and macOS=10.14.6-security_update_2020-003
Apple iOS and macOS=10.14.6-security_update_2020-004
Apple iOS and macOS=10.14.6-security_update_2020-005
Apple iOS and macOS=10.14.6-security_update_2020-006
Apple iOS and macOS=10.14.6-security_update_2020-007
Apple iOS and macOS=10.14.6-security_update_2021-001
Apple iOS and macOS=10.14.6-security_update_2021-002
Apple iOS and macOS=10.14.6-supplemental_update
Apple iOS and macOS=10.14.6-supplemental_update_2
Apple iOS and macOS=10.15.6
Apple iOS and macOS=10.15.6-supplemental_update
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7-security_update_2020
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-security_update_2020-005
Apple iOS and macOS=10.15.7-security_update_2020-007
Apple iOS and macOS=10.15.7-security_update_2021-001
Apple iOS and macOS>=11.0<11.3

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2021-1878.

  • What is the title of the vulnerability?

    The title of the vulnerability is 'smbx. An integer overflow was addressed with improved input validation.'

  • What is the affected software?

    The affected software includes Apple Catalina, Apple Mojave, and Apple macOS Big Sur (up to version 11.3).

  • How was the vulnerability addressed?

    The vulnerability was addressed by implementing improved input validation.

  • Where can I find more information about this vulnerability?

    You can find more information about this vulnerability at the following references: [link1], [link2], [link3].

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