critical
9.3
CWE
787
Advisory Published
CVE Published
Updated

CVE-2021-30799

First published: Wed Jul 21 2021(Updated: )

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. Processing maliciously crafted web content may lead to arbitrary code execution.

Credit: Sergei Glazunov Google Project ZeroSergei Glazunov Google Project ZeroSergei Glazunov Google Project Zero product-security@apple.com

Affected SoftwareAffected VersionHow to fix
debian/webkit2gtk
2.36.4-1~deb10u1
2.38.6-0+deb10u1
2.40.5-1~deb11u1
2.42.1-1~deb11u2
2.40.5-1~deb12u1
2.42.1-1~deb12u1
2.42.1-2
debian/wpewebkit
2.38.6-1~deb11u1
2.38.6-1
2.42.1-1
Apple macOS Big Sur<11.5
11.5
Apple Catalina
Apple Mojave
Apple iPhone OS<14.7
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-security_update_2019-001
Apple Mac OS X=10.14.6-security_update_2019-002
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-security_update_2021-001
Apple Mac OS X=10.14.6-security_update_2021-002
Apple Mac OS X=10.14.6-security_update_2021-003
Apple Mac OS X=10.14.6-security_update_2021-004
Apple Mac OS X=10.14.6-supplemental_update
Apple Mac OS X=10.14.6-supplemental_update_2
Apple Mac OS X=10.15.6-supplemental_update
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 macOS>=11.0<11.5

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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-2021-30799?

    CVE-2021-30799 is a vulnerability in WebKit that allows for multiple memory corruption issues.

  • Which software versions are affected by CVE-2021-30799?

    CVE-2021-30799 affects Apple Mojave, Apple Catalina, and Apple macOS Big Sur (up to version 11.5).

  • How can the memory corruption issues addressed in CVE-2021-30799 be mitigated?

    The memory corruption issues in CVE-2021-30799 can be mitigated by updating to the latest version of the affected software, as recommended by Apple.

  • Where can I find more information about CVE-2021-30799?

    You can find more information about CVE-2021-30799 on the Apple support website.

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