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CVE-2020-15999: Heap buffer overflow in CefSharp

October 27, 2020 (updated February 3, 2025)

A memory corruption bug(Heap overflow) in the FreeType font rendering library.

This can be exploited by attackers to execute arbitrary code by using specially crafted fonts with embedded PNG images .

As per https://www.secpod.com/blog/chrome-zero-day-under-active-exploitation-patch-now/

Google is aware of reports that an exploit for CVE-2020-15999 exists in the wild.

References

  • chromereleases.googleblog.com/2020/10/stable-channel-update-for-desktop_20.html
  • crbug.com/1139963
  • github.com/advisories/GHSA-pv36-h7jh-qm62
  • github.com/cefsharp/CefSharp
  • github.com/cefsharp/CefSharp/security/advisories/GHSA-pv36-h7jh-qm62
  • googleprojectzero.blogspot.com/p/rca-cve-2020-15999.html
  • lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J3QVIGAAJ4D62YEJAJJWMCCBCOQ6TVL7
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J3QVIGAAJ4D62YEJAJJWMCCBCOQ6TVL7
  • nvd.nist.gov/vuln/detail/CVE-2020-15999
  • security.gentoo.org/glsa/202011-12
  • security.gentoo.org/glsa/202012-04
  • security.gentoo.org/glsa/202401-19
  • security.netapp.com/advisory/ntap-20240812-0001
  • www.debian.org/security/2021/dsa-4824
  • www.nuget.org/packages/CefSharp.Common
  • www.nuget.org/packages/CefSharp.WinForms
  • www.nuget.org/packages/CefSharp.Wpf
  • www.nuget.org/packages/CefSharp.Wpf.HwndHost

Code Behaviors & Features

Detect and mitigate CVE-2020-15999 with GitLab Dependency Scanning

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Affected versions

All versions before 85.3.130

Fixed versions

  • 85.3.130

Solution

Upgrade to version 85.3.130 or above.

Impact 6.5 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-787: Out-of-bounds Write

Source file

nuget/CefSharp.Common/CVE-2020-15999.yml

Spotted a mistake? Edit the file on GitLab.

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