CVE-2018-4373: Buffer Overflow

Q: What is CVE-2018-4373?

CVE-2018-4373 is a vulnerability in WebKit that involves multiple memory corruption issues.

Q: Which software versions are affected by CVE-2018-4373?

Versions prior to iOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, and iCloud for Windows 7.8 are affected.

Q: How severe is CVE-2018-4373?

CVE-2018-4373 has a severity rating of 8.8, which is considered high.

Q: How can I fix CVE-2018-4373?

To fix CVE-2018-4373, update to iOS 12.1 or later, watchOS 5.1 or later, Safari 12.0.1 or later, iTunes 12.9.1 or later, or iCloud for Windows 7.8 or later.

Q: Where can I find more information about CVE-2018-4373?

You can find more information about CVE-2018-4373 on the Apple support page: [LINK]

Published Oct 30, 2018

Updated

WebKit. Multiple memory corruption issues were addressed with improved memory handling.

Other sources

Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to iOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, iCloud for Windows 7.8.

Credit

HyungSeok Han, DongHyeon Oh, Sang Kil Cha(KAIST Softsec Lab), Korea, ngg, alippai, DirtYiCE, KT(Tresorit working with Trend Micro), Yu Haiwan, Wu Hongjun(Nanyang Technological University working with Trend Micro), 010(Trend Micro), lokihardt(Google Project Zero), lokihardt(Google Project Zero), zhunki(360 ESG Codesafe Team), lokihardt(Google Project Zero), HyungSeok Han, DongHyeon Oh, Sang Kil Cha(KAIST Softsec Lab), Korea, ngg, alippai, DirtYiCE, KT(Tresorit working with Trend Micro), Yu Haiwan, Wu Hongjun(Nanyang Technological University working with Trend Micro), 010(Trend Micro), lokihardt(Google Project Zero), lokihardt(Google Project Zero), zhunki(360 ESG Codesafe Team), lokihardt(Google Project Zero), HyungSeok Han, DongHyeon Oh, Sang Kil Cha(KAIST Softsec Lab), Korea, ngg, alippai, DirtYiCE, KT(Tresorit working with Trend Micro), Yu Haiwan, Wu Hongjun(Nanyang Technological University working with Trend Micro), 010(Trend Micro), lokihardt(Google Project Zero), lokihardt(Google Project Zero), zhunki(360 ESG Codesafe Team), lokihardt(Google Project Zero), HyungSeok Han, DongHyeon Oh, Sang Kil Cha(KAIST Softsec Lab), Korea, ngg, alippai, DirtYiCE, KT(Tresorit working with Trend Micro), Yu Haiwan, Wu Hongjun(Nanyang Technological University working with Trend Micro), 010(Trend Micro), lokihardt(Google Project Zero), lokihardt(Google Project Zero), zhunki(360 ESG Codesafe Team), lokihardt(Google Project Zero), HyungSeok Han, DongHyeon Oh, Sang Kil Cha(KAIST Softsec Lab), Korea, ngg, alippai, DirtYiCE, KT(Tresorit working with Trend Micro), Yu Haiwan, Wu Hongjun(Nanyang Technological University working with Trend Micro), 010(Trend Micro), lokihardt(Google Project Zero), lokihardt(Google Project Zero), zhunki(360 ESG Codesafe Team), lokihardt(Google Project Zero)

Affected Software

11 affected componentsFixes available

Apple WatchOS<5.1

5.1

Apple iCloud for Windows<7.8

7.8

Apple iTunes for Windows<12.9.1

12.9.1

Apple Safari<12.0.1

12.0.1

Apple iOS<12.1

12.1

Apple Safari<12.0.1

Apple iPhone OS<12.1

Apple WatchOS<5.1

Apple iCloud<7.8

Apple iTunes<12.9.1

Microsoft Windows

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade Apple iOS, iPadOS, and watchOS to a version that resolves this vulnerability.
Fixed in 5.1
Upgrade
Upgrade Apple iCloud to a version that resolves this vulnerability.
Fixed in 7.8
Upgrade
Upgrade iTunes to a version that resolves this vulnerability.
Fixed in 12.9.1
Upgrade
Upgrade Safari to a version that resolves this vulnerability.
Fixed in 12.0.1
Upgrade
Upgrade Apple iOS and iPadOS to a version that resolves this vulnerability.
Fixed in 12.1
Upgrade
Upgrade iOS to a version that resolves this vulnerability.
Fixed in 12.1
Upgrade
Upgrade watchOS to a version that resolves this vulnerability.
Fixed in 5.1
Upgrade
Upgrade iCloud for Windows to a version that resolves this vulnerability.
Fixed in 7.8

Event History

Apr 3, 2019

CVE Published

via MITRE·05:43 PM

Data Sourced

via MITRE·05:43 PM

DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

What is CVE-2018-4373?

CVE-2018-4373 is a vulnerability in WebKit that involves multiple memory corruption issues.

Which software versions are affected by CVE-2018-4373?