跳转到帖子

Microsoft Windows: CVE-2023-50868: MITRE: CVE-2023-50868 NSEC3 closest encloser proof can exhaust CPU

recommended_posts

发布于
  • Members

Microsoft Windows: CVE-2023-50868: MITRE: CVE-2023-50868 NSEC3 closest encloser proof can exhaust CPU

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
06/11/2024
Created
06/12/2024
Added
06/11/2024
Modified
09/11/2024

Description

The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.

Solution(s)

  • microsoft-windows-windows_server_2012-kb5039260
  • microsoft-windows-windows_server_2012_r2-kb5039294
  • microsoft-windows-windows_server_2016-1607-kb5039214
  • microsoft-windows-windows_server_2019-1809-kb5039217
  • microsoft-windows-windows_server_2022-21h2-kb5039227
  • microsoft-windows-windows_server_2022-22h2-kb5039227
  • microsoft-windows-windows_server_2022-23h2-kb5039236

References

  • https://attackerkb.com/topics/cve-2023-50868
  • CVE - 2023-50868
  • https://support.microsoft.com/help/5039214
  • https://support.microsoft.com/help/5039217
  • https://support.microsoft.com/help/5039227
  • https://support.microsoft.com/help/5039236
  • https://support.microsoft.com/help/5039260
  • https://support.microsoft.com/help/5039294
View more
  • 查看数 708
  • 已创建
  • 最后回复

参与讨论

你可立刻发布并稍后注册。 如果你有帐户,立刻登录发布帖子。
注意:你的帖子需要版主批准后才能看到。

游客
回帖…