216 lines
11 KiB
JSON
216 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.1",
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"cveMetadata": {
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"cveId": "CVE-2023-3326",
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"assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
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"state": "PUBLISHED",
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"assignerShortName": "freebsd",
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"dateReserved": "2023-06-19T16:14:36.133Z",
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"datePublished": "2023-06-22T16:37:51.360Z",
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"dateUpdated": "2024-12-05T17:45:19.729Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"defaultStatus": "unaffected",
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"modules": [
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"pam_krb5"
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],
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"product": "FreeBSD",
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"vendor": "FreeBSD",
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"versions": [
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{
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"lessThan": "13.2-RELEASE-p1",
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"status": "affected",
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"version": "13.2-RELEASE",
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"versionType": "release"
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},
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{
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"lessThan": "13.1-RELEASE-p8",
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"status": "affected",
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"version": "13.1-RELEASE",
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"versionType": "release"
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},
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{
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"lessThan": "12.4-RELEASE-p3",
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"status": "affected",
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"version": "12.4-RELEASE",
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"versionType": "release"
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}
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]
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}
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],
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"configurations": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<div>Exposure only occurs if pam_krb5 is enabled in the PAM configuration, an /etc/krb5.conf is installed, and the system does not have a system keytab.</div><div><br></div><div>For FreeBSD, the default installation has pam_krb5 commented out and does not have an /etc/krb5.conf.</div>"
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}
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],
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"value": "Exposure only occurs if pam_krb5 is enabled in the PAM configuration, an /etc/krb5.conf is installed, and the system does not have a system keytab.\n\n\n\n\nFor FreeBSD, the default installation has pam_krb5 commented out and does not have an /etc/krb5.conf.\n\n"
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "finder",
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"user": "00000000-0000-4000-9000-000000000000",
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"value": "Taylor R Campbell <riastradh@NetBSD.org>"
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}
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],
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"datePublic": "2023-06-21T06:00:00.000Z",
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "pam_krb5 authenticates a user by essentially running kinit with the password, getting a ticket-granting ticket (tgt) from the Kerberos KDC (Key Distribution Center) over the network, as a way to verify the password. However, if a keytab is not provisioned on the system, pam_krb5 has no way to validate the response from the KDC, and essentially trusts the tgt provided over the network as being valid. In a non-default FreeBSD installation that leverages pam_krb5 for authentication and does not have a keytab provisioned, an attacker that is able to control both the password and the KDC responses can return a valid tgt, allowing authentication to occur for any user on the system.<br>"
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}
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],
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"value": "pam_krb5 authenticates a user by essentially running kinit with the password, getting a ticket-granting ticket (tgt) from the Kerberos KDC (Key Distribution Center) over the network, as a way to verify the password. However, if a keytab is not provisioned on the system, pam_krb5 has no way to validate the response from the KDC, and essentially trusts the tgt provided over the network as being valid. In a non-default FreeBSD installation that leverages pam_krb5 for authentication and does not have a keytab provisioned, an attacker that is able to control both the password and the KDC responses can return a valid tgt, allowing authentication to occur for any user on the system.\n"
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-114",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-114 Authentication Abuse"
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}
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]
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-303",
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"description": "CWE-303 Incorrect Implementation of Authentication Algorithm",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
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"shortName": "freebsd",
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"dateUpdated": "2023-08-01T22:40:58.267Z"
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},
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"references": [
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{
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"tags": [
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"vendor-advisory"
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],
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"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-23:04.pam_krb5.asc"
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},
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{
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"tags": [
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"third-party-advisory"
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],
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"url": "https://security.netapp.com/advisory/ntap-20230714-0005/"
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},
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{
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"tags": [
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"vendor-advisory"
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],
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"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-23:09.pam_krb5.asc"
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}
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],
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"source": {
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"advisory": "FreeBSD-SA-23:04.pam_krb5",
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"discovery": "UNKNOWN"
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},
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"title": "Network authentication attack via pam_krb5",
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"workarounds": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "If you are not using Kerberos at all, ensure /etc/krb5.conf is missing from your system. Additionally, ensure pam_krb5 is commented out of your PAM configuration located as documented in pam.conf(5), generally /etc/pam.d. Note, the default FreeBSD PAM configuration has pam_krb5 commented out.<br><br>If you are using Kerberos, but not using pam_krb5, ensure pam_krb5 is commented out of your PAM configuration located as documented in pam.conf(5), generally /etc/pam.d. Note, the default FreeBSD PAM configuration has pam_krb5 commented out.<br><br>If you are using pam_krb5, ensure you have a keytab on your system as provided by your Kerberos administrator.<br>"
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}
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],
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"value": "If you are not using Kerberos at all, ensure /etc/krb5.conf is missing from your system. Additionally, ensure pam_krb5 is commented out of your PAM configuration located as documented in pam.conf(5), generally /etc/pam.d. Note, the default FreeBSD PAM configuration has pam_krb5 commented out.\n\nIf you are using Kerberos, but not using pam_krb5, ensure pam_krb5 is commented out of your PAM configuration located as documented in pam.conf(5), generally /etc/pam.d. Note, the default FreeBSD PAM configuration has pam_krb5 commented out.\n\nIf you are using pam_krb5, ensure you have a keytab on your system as provided by your Kerberos administrator.\n"
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}
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],
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"x_generator": {
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"engine": "Vulnogram 0.1.0-dev"
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}
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},
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"adp": [
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{
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2024-08-02T06:55:03.226Z"
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},
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"title": "CVE Program Container",
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"references": [
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{
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"tags": [
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"vendor-advisory",
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"x_transferred"
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],
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"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-23:04.pam_krb5.asc"
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},
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{
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"tags": [
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"third-party-advisory",
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"x_transferred"
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],
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"url": "https://security.netapp.com/advisory/ntap-20230714-0005/"
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},
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{
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"tags": [
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"vendor-advisory",
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"x_transferred"
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],
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"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-23:09.pam_krb5.asc"
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}
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]
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},
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2024-12-05T17:45:11.407919Z",
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"id": "CVE-2023-3326",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "total"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-12-05T17:45:19.729Z"
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}
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}
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]
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}
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} |