CVE-2020-25097

An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the security controls. This occurs for certain uri_whitespace configuration settings.

CVSS v3.0 8.6 HIGH
CVSS v2.0 5.0 MEDIUM

8.6^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_11.patch	Mailing List Patch Vendor Advisory
http://www.squid-cache.org/Versions/v5/changesets/SQUID-2020_11.patch	Mailing List Patch Vendor Advisory
https://github.com/squid-cache/squid/security/advisories/GHSA-jvf6-h9gj-pmj6	Patch Third Party Advisory
https://www.debian.org/security/2021/dsa-4873	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DJMDRVV677AJL4BZAOLCT5LMFCGBZTC2/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FBXFWKIGXPERDVQXG556LLPUOCMQGERC/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O3RYBDMJCPYGOSURWDR3WJTE474UFT77/
https://security.gentoo.org/glsa/202105-14

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:squid-cache:squid::::::::
	cpe:2.3:a:squid-cache:squid::::::::

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Information

Published : 2021-03-19 05:15

Updated : 2021-07-30 14:15

NVD link : CVE-2020-25097

Mitre link : CVE-2020-25097

JSON object : View

Products Affected

debian

debian_linux

squid-cache

squid

CWE

CWE-20

Improper Input Validation

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_11.patch", "name": "http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_11.patch", "tags": ["Mailing List", "Patch", "Vendor Advisory"], "refsource": "MISC"}, {"url": "http://www.squid-cache.org/Versions/v5/changesets/SQUID-2020_11.patch", "name": "http://www.squid-cache.org/Versions/v5/changesets/SQUID-2020_11.patch", "tags": ["Mailing List", "Patch", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-jvf6-h9gj-pmj6", "name": "https://github.com/squid-cache/squid/security/advisories/GHSA-jvf6-h9gj-pmj6", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.debian.org/security/2021/dsa-4873", "name": "DSA-4873", "tags": ["Third Party Advisory"], "refsource": "DEBIAN"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DJMDRVV677AJL4BZAOLCT5LMFCGBZTC2/", "name": "FEDORA-2021-ecb24e0b9d", "tags": [], "refsource": "FEDORA"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FBXFWKIGXPERDVQXG556LLPUOCMQGERC/", "name": "FEDORA-2021-7d86bec29e", "tags": [], "refsource": "FEDORA"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O3RYBDMJCPYGOSURWDR3WJTE474UFT77/", "name": "FEDORA-2021-76f09062a7", "tags": [], "refsource": "FEDORA"}, {"url": "https://security.gentoo.org/glsa/202105-14", "name": "GLSA-202105-14", "tags": [], "refsource": "GENTOO"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the security controls. This occurs for certain uri_whitespace configuration settings."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-444"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2020-25097", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.6, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 4.0, "exploitabilityScore": 3.9}}, "publishedDate": "2021-03-19T05:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "4.14", "versionStartIncluding": "2.0"}, {"cpe23Uri": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "5.0.5", "versionStartIncluding": "5.0.1"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-07-30T14:15Z"}