USN-9075-1

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Source
https://ubuntu.com/security/notices/USN-9075-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9075-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-9075-1
Upstream
Related
Published
2026-11-12T20:52:10Z
Modified
2026-11-13T11:28:27Z
Summary
libjwt vulnerability
Details

It was discovered that libjwt did not use a constant-time comparison when verifying HMAC signatures. A remote attacker could possibly use this issue to forge signatures through a timing side-channel attack and bypass authentication.

References

Affected packages

Ubuntu:Pro:18.04:LTS / libjwt

Package

Name
libjwt
Purl
pkg:deb/ubuntu/libjwt?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.9.0-1ubuntu0.1~esm1

Affected versions

1.*
1.8.0+dfsg-1
1.8.0+dfsg-2
1.9.0-1
1.9.0-1build1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libjwt0",
            "binary_version": "1.9.0-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2024-25189",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:18.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9075-1.json"

Ubuntu:Pro:20.04:LTS / libjwt

Package

Name
libjwt
Purl
pkg:deb/ubuntu/libjwt?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.10.2-1ubuntu0.20.04.1~esm1

Affected versions

1.*
1.10.2-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libjwt-gnutls0",
            "binary_version": "1.10.2-1ubuntu0.20.04.1~esm1"
        },
        {
            "binary_name": "libjwt0",
            "binary_version": "1.10.2-1ubuntu0.20.04.1~esm1"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2024-25189",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:20.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9075-1.json"

Ubuntu:Pro:22.04:LTS / libjwt

Package

Name
libjwt
Purl
pkg:deb/ubuntu/libjwt?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.10.2-1ubuntu0.22.04.1~esm1

Affected versions

1.*
1.10.2-1
1.10.2-1build1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libjwt-gnutls0",
            "binary_version": "1.10.2-1ubuntu0.22.04.1~esm1"
        },
        {
            "binary_name": "libjwt0",
            "binary_version": "1.10.2-1ubuntu0.22.04.1~esm1"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2024-25189",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:22.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9075-1.json"