ubuntu-cve-2025-3576
Vulnerability from osv_ubuntu
Published
2025-04-15 06:15
Modified
2026-04-22 07:53
Summary
Details
A vulnerability in the MIT Kerberos implementation allows GSSAPI-protected messages using RC4-HMAC-MD5 to be spoofed due to weaknesses in the MD5 checksum design. If RC4 is preferred over stronger encryption types, an attacker could exploit MD5 collisions to forge message integrity codes. This may lead to unauthorized message tampering.
Severity
5.9 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "krb5-admin-server",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "krb5-gss-samples",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "krb5-kdc",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "krb5-kdc-ldap",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "krb5-locales",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "krb5-multidev",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "krb5-otp",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "krb5-pkinit",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "krb5-user",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "libgssapi-krb5-2",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "libgssrpc4",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "libk5crypto3",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "libkadm5clnt-mit9",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "libkadm5srv-mit8",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "libkadm5srv-mit9",
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},
{
"binary_name": "libkdb5-7",
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},
{
"binary_name": "libkrad0",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "libkrb5-3",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
},
{
"binary_name": "libkrb5support0",
"binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
}
]
},
"package": {
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"name": "krb5",
"purl": "pkg:deb/ubuntu/krb5@1.12+dfsg-2ubuntu5.4+esm7?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.12+dfsg-2ubuntu5.4+esm7"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.10.1+dfsg-6.1ubuntu1",
"1.11.3+dfsg-3ubuntu2",
"1.12+dfsg-2ubuntu1",
"1.12+dfsg-2ubuntu2",
"1.12+dfsg-2ubuntu3",
"1.12+dfsg-2ubuntu4",
"1.12+dfsg-2ubuntu4.2",
"1.12+dfsg-2ubuntu5",
"1.12+dfsg-2ubuntu5.1",
"1.12+dfsg-2ubuntu5.2",
"1.12+dfsg-2ubuntu5.3",
"1.12+dfsg-2ubuntu5.4",
"1.12+dfsg-2ubuntu5.4+esm1",
"1.12+dfsg-2ubuntu5.4+esm2",
"1.12+dfsg-2ubuntu5.4+esm3",
"1.12+dfsg-2ubuntu5.4+esm4",
"1.12+dfsg-2ubuntu5.4+esm5",
"1.12+dfsg-2ubuntu5.4+esm6"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "krb5-admin-server",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "krb5-gss-samples",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "krb5-k5tls",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "krb5-kdc",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "krb5-kdc-ldap",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "krb5-locales",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "krb5-multidev",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "krb5-otp",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "krb5-pkinit",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "krb5-user",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "libgssapi-krb5-2",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "libgssrpc4",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "libk5crypto3",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "libkadm5clnt-mit9",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "libkadm5srv-mit9",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "libkdb5-8",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "libkrad0",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "libkrb5-3",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
},
{
"binary_name": "libkrb5support0",
"binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "krb5",
"purl": "pkg:deb/ubuntu/krb5@1.13.2+dfsg-5ubuntu2.2+esm7?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
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},
{
"fixed": "1.13.2+dfsg-5ubuntu2.2+esm7"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.13.2+dfsg-2",
"1.13.2+dfsg-3",
"1.13.2+dfsg-4",
"1.13.2+dfsg-5",
"1.13.2+dfsg-5ubuntu1",
"1.13.2+dfsg-5ubuntu2",
"1.13.2+dfsg-5ubuntu2.1",
"1.13.2+dfsg-5ubuntu2.1+esm1",
"1.13.2+dfsg-5ubuntu2.2",
"1.13.2+dfsg-5ubuntu2.2+esm3",
"1.13.2+dfsg-5ubuntu2.2+esm4",
"1.13.2+dfsg-5ubuntu2.2+esm5",
"1.13.2+dfsg-5ubuntu2.2+esm6"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "krb5-admin-server",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "krb5-gss-samples",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "krb5-k5tls",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "krb5-kdc",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "krb5-kdc-ldap",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "krb5-kpropd",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "krb5-locales",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "krb5-multidev",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "krb5-otp",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "krb5-pkinit",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "krb5-user",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "libgssapi-krb5-2",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "libgssrpc4",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "libk5crypto3",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "libkadm5clnt-mit11",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "libkadm5srv-mit11",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "libkdb5-9",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "libkrad0",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "libkrb5-3",
"binary_version": "1.16-2ubuntu0.4+esm5"
},
{
"binary_name": "libkrb5support0",
"binary_version": "1.16-2ubuntu0.4+esm5"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "krb5",
"purl": "pkg:deb/ubuntu/krb5@1.16-2ubuntu0.4+esm5?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
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"events": [
{
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},
{
"fixed": "1.16-2ubuntu0.4+esm5"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.15.1-2",
"1.16-2",
"1.16-2build1",
"1.16-2ubuntu0.1",
"1.16-2ubuntu0.1+esm1",
"1.16-2ubuntu0.2",
"1.16-2ubuntu0.3",
"1.16-2ubuntu0.4",
"1.16-2ubuntu0.4+esm1",
"1.16-2ubuntu0.4+esm2",
"1.16-2ubuntu0.4+esm3"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "krb5-admin-server",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "krb5-gss-samples",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "krb5-k5tls",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "krb5-kdc",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "krb5-kdc-ldap",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "krb5-kpropd",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "krb5-locales",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "krb5-multidev",
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},
{
"binary_name": "krb5-otp",
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},
{
"binary_name": "krb5-pkinit",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "krb5-user",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "libgssapi-krb5-2",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "libgssrpc4",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "libk5crypto3",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "libkadm5clnt-mit11",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "libkadm5srv-mit11",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "libkdb5-9",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "libkrad0",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "libkrb5-3",
"binary_version": "1.17-6ubuntu4.11"
},
{
"binary_name": "libkrb5support0",
"binary_version": "1.17-6ubuntu4.11"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "krb5",
"purl": "pkg:deb/ubuntu/krb5@1.17-6ubuntu4.11?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.17-6ubuntu4.11"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.17-6",
"1.17-6ubuntu3",
"1.17-6ubuntu4",
"1.17-6ubuntu4.1",
"1.17-6ubuntu4.2",
"1.17-6ubuntu4.3",
"1.17-6ubuntu4.4",
"1.17-6ubuntu4.6",
"1.17-6ubuntu4.7",
"1.17-6ubuntu4.8",
"1.17-6ubuntu4.9"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "krb5-admin-server",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "krb5-gss-samples",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "krb5-k5tls",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "krb5-kdc",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "krb5-kdc-ldap",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "krb5-kpropd",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "krb5-locales",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "krb5-multidev",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "krb5-otp",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "krb5-pkinit",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "krb5-user",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "libgssapi-krb5-2",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "libgssrpc4",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "libk5crypto3",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "libkadm5clnt-mit12",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "libkadm5srv-mit12",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "libkdb5-10",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "libkrad0",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "libkrb5-3",
"binary_version": "1.19.2-2ubuntu0.7"
},
{
"binary_name": "libkrb5support0",
"binary_version": "1.19.2-2ubuntu0.7"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "krb5",
"purl": "pkg:deb/ubuntu/krb5@1.19.2-2ubuntu0.7?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.19.2-2ubuntu0.7"
}
],
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}
],
"versions": [
"1.18.3-6",
"1.18.3-7",
"1.19.2-0ubuntu1",
"1.19.2-1",
"1.19.2-2",
"1.19.2-2ubuntu0.1",
"1.19.2-2ubuntu0.2",
"1.19.2-2ubuntu0.3",
"1.19.2-2ubuntu0.4",
"1.19.2-2ubuntu0.5",
"1.19.2-2ubuntu0.6"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "krb5-admin-server",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "krb5-gss-samples",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "krb5-k5tls",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "krb5-kdc",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "krb5-kdc-ldap",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "krb5-kpropd",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "krb5-locales",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "krb5-multidev",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "krb5-otp",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "krb5-pkinit",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "krb5-user",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "libgssapi-krb5-2",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "libgssrpc4t64",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "libk5crypto3",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "libkadm5clnt-mit12",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "libkadm5srv-mit12",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "libkdb5-10t64",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "libkrad0",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "libkrb5-3",
"binary_version": "1.20.1-6ubuntu2.6"
},
{
"binary_name": "libkrb5support0",
"binary_version": "1.20.1-6ubuntu2.6"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "krb5",
"purl": "pkg:deb/ubuntu/krb5@1.20.1-6ubuntu2.6?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.20.1-6ubuntu2.6"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.20.1-3ubuntu1",
"1.20.1-5build1",
"1.20.1-6ubuntu1",
"1.20.1-6ubuntu2",
"1.20.1-6ubuntu2.1",
"1.20.1-6ubuntu2.2",
"1.20.1-6ubuntu2.3",
"1.20.1-6ubuntu2.4",
"1.20.1-6ubuntu2.5"
]
}
],
"aliases": [],
"details": "A vulnerability in the MIT Kerberos implementation allows GSSAPI-protected messages using RC4-HMAC-MD5 to be spoofed due to weaknesses in the MD5 checksum design. If RC4 is preferred over stronger encryption types, an attacker could exploit MD5 collisions to forge message integrity codes. This may lead to unauthorized message tampering.",
"id": "UBUNTU-CVE-2025-3576",
"modified": "2026-04-22T07:53:18Z",
"published": "2025-04-15T06:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-3576"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-3576"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2359465"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2025-3576"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7542-1"
}
],
"related": [
"USN-7542-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-3576"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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