CVE-2024-20337 (GCVE-0-2024-20337)
Vulnerability from cvelistv5
Published
2024-03-06 16:30
Modified
2024-08-01 21:59
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Summary
A vulnerability in the SAML authentication process of Cisco Secure Client could allow an unauthenticated, remote attacker to conduct a carriage return line feed (CRLF) injection attack against a user.
This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link while establishing a VPN session. A successful exploit could allow the attacker to execute arbitrary script code in the browser or access sensitive, browser-based information, including a valid SAML token. The attacker could then use the token to establish a remote access VPN session with the privileges of the affected user. Individual hosts and services behind the VPN headend would still need additional credentials for successful access.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco Secure Client |
Version: 4.9.00086 Version: 4.9.01095 Version: 4.9.02028 Version: 4.9.03047 Version: 4.9.03049 Version: 4.9.04043 Version: 4.9.04053 Version: 4.9.05042 Version: 4.9.06037 Version: 4.10.00093 Version: 4.10.01075 Version: 4.10.02086 Version: 4.10.03104 Version: 4.10.04065 Version: 4.10.04071 Version: 4.10.05085 Version: 4.10.05095 Version: 4.10.05111 Version: 4.10.06079 Version: 4.10.06090 Version: 4.10.07061 Version: 4.10.07062 Version: 4.10.07073 Version: 5.0.00238 Version: 5.0.00529 Version: 5.0.00556 Version: 5.0.01242 Version: 5.0.02075 Version: 5.0.03072 Version: 5.0.03076 Version: 5.0.04032 Version: 5.0.05040 Version: 5.1.0.136 Version: 5.1.1.42 |
{
"containers": {
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"cpe:2.3:a:cisco:secure_client:4.10.02086:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:4.10.03104:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:4.10.04065:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:4.10.04071:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:4.10.05085:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:4.10.05095:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:4.10.05111:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:4.10.06079:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:4.10.06090:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:4.10.07061:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:4.10.07062:*:*:*:*:*:*:*",
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"cpe:2.3:a:cisco:secure_client:5.0.00556:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:5.0.01242:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:5.0.02075:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:5.0.03072:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:5.0.03076:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:5.0.04032:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:5.1.0.136:*:*:*:*:*:*:*",
"cpe:2.3:a:cisco:secure_client:5.1.1.42:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
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{
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{
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{
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{
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{
"status": "affected",
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{
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{
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{
"status": "affected",
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{
"status": "affected",
"version": "5.1.0.136"
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{
"status": "affected",
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}
],
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-20337",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-03-09T05:00:57.702576Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-07-25T17:00:36.986Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2024-08-01T21:59:42.871Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "cisco-sa-secure-client-crlf-W43V4G7",
"tags": [
"x_transferred"
],
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-client-crlf-W43V4G7"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "Cisco Secure Client",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "4.9.00086"
},
{
"status": "affected",
"version": "4.9.01095"
},
{
"status": "affected",
"version": "4.9.02028"
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{
"status": "affected",
"version": "4.9.03047"
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{
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"version": "4.9.03049"
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{
"status": "affected",
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{
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{
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{
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"status": "affected",
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"version": "5.0.00238"
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"version": "5.0.00529"
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"version": "5.0.01242"
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"version": "5.0.04032"
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"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the SAML authentication process of Cisco Secure Client could allow an unauthenticated, remote attacker to conduct a carriage return line feed (CRLF) injection attack against a user. \r\n\r This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link while establishing a VPN session. A successful exploit could allow the attacker to execute arbitrary script code in the browser or access sensitive, browser-based information, including a valid SAML token. The attacker could then use the token to establish a remote access VPN session with the privileges of the affected user. Individual hosts and services behind the VPN headend would still need additional credentials for successful access."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
"version": "3.1"
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"format": "cvssV3_1"
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],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-93",
"description": "Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)",
"lang": "en",
"type": "cwe"
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"references": [
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"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-client-crlf-W43V4G7"
}
],
"source": {
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"defects": [
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"discovery": "EXTERNAL"
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}
},
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"assignerShortName": "cisco",
"cveId": "CVE-2024-20337",
"datePublished": "2024-03-06T16:30:02.285Z",
"dateReserved": "2023-11-08T15:08:07.642Z",
"dateUpdated": "2024-08-01T21:59:42.871Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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