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Public Security Vulnerability
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Resolution: Fixed
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Low
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6.2.0, 6.2.2
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None
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None
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7.5
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High
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CVE-2023-44487
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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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DoS (Denial of Service)
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Crowd Data Center, Crowd Server
This High severity DoS (Denial of Service) io.netty:netty-codec-http2 Dependency vulnerability was introduced in versions 6.2.0 of Crowd Data Center and Server.
This DoS (Denial of Service) io.netty:netty-codec-http2 Dependency vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H allows an unauthenticated attacker can cause a denial of service which has a high impact to availability and requires no user interaction.
Atlassian recommends that Crowd Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
- Crowd Data Center and Server 6.2: Upgrade to a release greater than or equal to 6.2.3
See the release notes (https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html). You can download the latest version of Crowd Data Center and Server from the download center (https://www.atlassian.com/software/crowd/download-archive).
The National Vulnerability Database provides the following description for this vulnerability: The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
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