UBUNTU-CVE-2021-3405

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Source

https://ubuntu.com/security/CVE-2021-3405

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3405.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-3405

Upstream

CVE-2021-3405

Published

2021-02-23T20:15:00Z

Modified

2026-09-09T00:30:17Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

A flaw was found in libebml before 1.4.2. A heap overflow bug exists in the implementation of EbmlString::ReadData and EbmlUnicodeString::ReadData in libebml.

References

Affected packages

Ubuntu:25.10 / libebml

Package

Name: libebml
Purl: pkg:deb/ubuntu/libebml?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.4.5-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libebml5",
            "binary_version": "1.4.5-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3405.json"