medium
5.5
CWE
125
Advisory Published
CVE Published
Updated

CVE-2021-1778

First published: Tue Jan 26 2021(Updated: )

An out-of-bounds read issue existed in the curl. This issue was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. Processing a maliciously crafted image may lead to a denial of service.

Credit: Xingwei Lin Ant Security LightXingwei Lin Ant Security LightXingwei Lin Ant Security LightXingwei Lin Ant Security Light product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iPadOS<14.4
Apple iPhone OS<14.4
Apple Mac OS X>=10.14<10.14.6
Apple Mac OS X>=10.15<10.15.7
Apple Mac OS X=10.14.6
Apple Mac OS X=10.14.6-security_update_2019-004
Apple Mac OS X=10.14.6-security_update_2019-005
Apple Mac OS X=10.14.6-security_update_2019-006
Apple Mac OS X=10.14.6-security_update_2019-007
Apple Mac OS X=10.14.6-security_update_2020-001
Apple Mac OS X=10.14.6-security_update_2020-002
Apple Mac OS X=10.14.6-security_update_2020-003
Apple Mac OS X=10.14.6-security_update_2020-004
Apple Mac OS X=10.14.6-security_update_2020-005
Apple Mac OS X=10.14.6-security_update_2020-006
Apple Mac OS X=10.14.6-security_update_2020-007
Apple Mac OS X=10.14.6-supplemental_update
Apple Mac OS X=10.14.6-supplemental_update_2
Apple Mac OS X=10.15.7
Apple Mac OS X=10.15.7-supplemental_update
Apple macOS>=11.0<11.2
Apple tvOS<14.4
Apple watchOS<7.3
Apple tvOS<14.4
14.4
Apple watchOS<7.3
7.3
Apple macOS Big Sur<11.2
11.2
Apple Catalina
Apple Mojave
Apple iOS<14.4
14.4
Apple iPadOS<14.4
14.4

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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 CVE-2021-1778?

    CVE-2021-1778 is a vulnerability related to an out-of-bounds read issue in the curl library, which is used by ImageIO.

  • Which versions of macOS are affected by CVE-2021-1778?

    macOS Big Sur 11.2 and earlier versions are affected by CVE-2021-1778.

  • Which versions of watchOS are affected by CVE-2021-1778?

    watchOS 7.3 and earlier versions are affected by CVE-2021-1778.

  • Which versions of iOS are affected by CVE-2021-1778?

    iOS 14.4 and earlier versions are affected by CVE-2021-1778.

  • How can I fix CVE-2021-1778?

    Update to the latest version of the affected software. Refer to the vendor's security advisory for more information.

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