UBUNTU-CVE-2024-1931

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Source
https://ubuntu.com/security/CVE-2024-1931
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-1931.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2024-1931
Related
Published
2024-03-07T10:15:00Z
Modified
2024-12-19T16:33:37Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

NLnet Labs Unbound version 1.18.0 up to and including version 1.19.1 contain a vulnerability that can cause denial of service by a certain code path that can lead to an infinite loop. Unbound 1.18.0 introduced a feature that removes EDE records from responses with size higher than the client's advertised buffer size. Before removing all the EDE records however, it would try to see if trimming the extra text fields on those records would result in an acceptable size while still retaining the EDE codes. Due to an unchecked condition, the code that trims the text of the EDE records could loop indefinitely. This happens when Unbound would reply with attached EDE information on a positive reply and the client's buffer size is smaller than the needed space to include EDE records. The vulnerability can only be triggered when the 'ede: yes' option is used; non default configuration. From version 1.19.2 on, the code is fixed to avoid looping indefinitely.

References

Affected packages

Ubuntu:24.04:LTS / unbound

Package

Name
unbound
Purl
pkg:deb/ubuntu/unbound?arch=src?distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.19.2-1ubuntu1

Affected versions

1.*

1.17.1-2
1.18.0-2ubuntu1
1.18.0-2ubuntu2
1.19.1-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "1.19.2-1ubuntu1",
            "binary_name": "libunbound-dev"
        },
        {
            "binary_version": "1.19.2-1ubuntu1",
            "binary_name": "libunbound8"
        },
        {
            "binary_version": "1.19.2-1ubuntu1",
            "binary_name": "libunbound8-dbgsym"
        },
        {
            "binary_version": "1.19.2-1ubuntu1",
            "binary_name": "python3-unbound"
        },
        {
            "binary_version": "1.19.2-1ubuntu1",
            "binary_name": "python3-unbound-dbgsym"
        },
        {
            "binary_version": "1.19.2-1ubuntu1",
            "binary_name": "unbound"
        },
        {
            "binary_version": "1.19.2-1ubuntu1",
            "binary_name": "unbound-anchor"
        },
        {
            "binary_version": "1.19.2-1ubuntu1",
            "binary_name": "unbound-anchor-dbgsym"
        },
        {
            "binary_version": "1.19.2-1ubuntu1",
            "binary_name": "unbound-dbgsym"
        },
        {
            "binary_version": "1.19.2-1ubuntu1",
            "binary_name": "unbound-host"
        },
        {
            "binary_version": "1.19.2-1ubuntu1",
            "binary_name": "unbound-host-dbgsym"
        }
    ]
}