UBUNTU-CVE-2023-31137

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Source
https://ubuntu.com/security/CVE-2023-31137
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-31137.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2023-31137
Upstream
Downstream
Related
Published
2023-05-09T14:15:00Z
Modified
2025-09-08T16:56:16Z
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
  • 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
  • Ubuntu - medium
Summary
[none]
Details

MaraDNS is open-source software that implements the Domain Name System (DNS). In version 3.5.0024 and prior, a remotely exploitable integer underflow vulnerability in the DNS packet decompression function allows an attacker to cause a Denial of Service by triggering an abnormal program termination. The vulnerability exists in the decomp_get_rddata function within the Decompress.c file. When handling a DNS packet with an Answer RR of qtype 16 (TXT record) and any qclass, if the rdlength is smaller than rdata, the result of the line Decompress.c:886 is a negative number len = rdlength - total;. This value is then passed to the decomp_append_bytes function without proper validation, causing the program to attempt to allocate a massive chunk of memory that is impossible to allocate. Consequently, the program exits with an error code of 64, causing a Denial of Service. One proposed fix for this vulnerability is to patch Decompress.c:887 by breaking if(len <= 0), which has been incorporated in version 3.5.0036 via commit bab062bde40b2ae8a91eecd522e84d8b993bab58.

References

Affected packages

Ubuntu:Pro:16.04:LTS / maradns

Package

Name
maradns
Purl
pkg:deb/ubuntu/maradns@2.0.13-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.0.13-1ubuntu0.1~esm1

Affected versions

2.*

2.0.11-1
2.0.13-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.0.13-1ubuntu0.1~esm1",
            "binary_name": "duende"
        },
        {
            "binary_version": "2.0.13-1ubuntu0.1~esm1",
            "binary_name": "maradns"
        },
        {
            "binary_version": "2.0.13-1ubuntu0.1~esm1",
            "binary_name": "maradns-deadwood"
        },
        {
            "binary_version": "2.0.13-1ubuntu0.1~esm1",
            "binary_name": "maradns-docs"
        },
        {
            "binary_version": "2.0.13-1ubuntu0.1~esm1",
            "binary_name": "maradns-zoneserver"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / maradns

Package

Name
maradns
Purl
pkg:deb/ubuntu/maradns@2.0.13-1.2ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.0.13-1.2ubuntu0.1~esm1

Affected versions

2.*

2.0.13-1.2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.0.13-1.2ubuntu0.1~esm1",
            "binary_name": "duende"
        },
        {
            "binary_version": "2.0.13-1.2ubuntu0.1~esm1",
            "binary_name": "maradns"
        },
        {
            "binary_version": "2.0.13-1.2ubuntu0.1~esm1",
            "binary_name": "maradns-deadwood"
        },
        {
            "binary_version": "2.0.13-1.2ubuntu0.1~esm1",
            "binary_name": "maradns-docs"
        },
        {
            "binary_version": "2.0.13-1.2ubuntu0.1~esm1",
            "binary_name": "maradns-zoneserver"
        }
    ]
}

Ubuntu:20.04:LTS / maradns

Package

Name
maradns
Purl
pkg:deb/ubuntu/maradns@2.0.13-1.4+deb11u1build0.20.04.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.0.13-1.4+deb11u1build0.20.04.1

Affected versions

2.*

2.0.13-1.2build1
2.0.13-1.4
2.0.13-1.4build1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.0.13-1.4+deb11u1build0.20.04.1",
            "binary_name": "duende"
        },
        {
            "binary_version": "2.0.13-1.4+deb11u1build0.20.04.1",
            "binary_name": "maradns"
        },
        {
            "binary_version": "2.0.13-1.4+deb11u1build0.20.04.1",
            "binary_name": "maradns-deadwood"
        },
        {
            "binary_version": "2.0.13-1.4+deb11u1build0.20.04.1",
            "binary_name": "maradns-docs"
        },
        {
            "binary_version": "2.0.13-1.4+deb11u1build0.20.04.1",
            "binary_name": "maradns-zoneserver"
        }
    ]
}

Ubuntu:22.04:LTS / maradns

Package

Name
maradns
Purl
pkg:deb/ubuntu/maradns@2.0.13-1.4+deb11u1build0.22.04.1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.0.13-1.4+deb11u1build0.22.04.1

Affected versions

2.*

2.0.13-1.4build2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.0.13-1.4+deb11u1build0.22.04.1",
            "binary_name": "duende"
        },
        {
            "binary_version": "2.0.13-1.4+deb11u1build0.22.04.1",
            "binary_name": "maradns"
        },
        {
            "binary_version": "2.0.13-1.4+deb11u1build0.22.04.1",
            "binary_name": "maradns-deadwood"
        },
        {
            "binary_version": "2.0.13-1.4+deb11u1build0.22.04.1",
            "binary_name": "maradns-docs"
        },
        {
            "binary_version": "2.0.13-1.4+deb11u1build0.22.04.1",
            "binary_name": "maradns-zoneserver"
        }
    ]
}