CVE-2021-42097

GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A csrf_token value is not specific to a single user account. An attacker can obtain a value within the context of an unprivileged user account, and then use that value in a CSRF attack against an admin (e.g., for account takeover).

CVSS v3.0 8.0 HIGH
CVSS v2.0 8.5 HIGH

8.0^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.1 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

8.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:M/Au:S/C:C/I:C/A:C

Exploitability : 6.8 / Impact : 10.0

Access Vector NETWORK

Access Complexity MEDIUM

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://mail.python.org/archives/list/mailman-announce@python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/	Patch Third Party Advisory
https://bugs.launchpad.net/mailman/+bug/1947640	Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/21/4	Mailing List Patch Third Party Advisory
https://www.debian.org/security/2021/dsa-4991	Third Party Advisory

Advertisement

Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:mailman:*:*:*:*:*:*:*:*

Configuration 2 (hide)

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

Information

Published : 2021-10-20 18:15

Updated : 2021-11-05 11:46

NVD link : CVE-2021-42097

Mitre link : CVE-2021-42097

JSON object : View

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

Advertisement

Products Affected

debian

debian_linux

gnu

mailman

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://mail.python.org/archives/list/mailman-announce@python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/", "name": "https://mail.python.org/archives/list/mailman-announce@python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/", "tags": ["Patch", "Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://bugs.launchpad.net/mailman/+bug/1947640", "name": "https://bugs.launchpad.net/mailman/+bug/1947640", "tags": ["Patch", "Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "http://www.openwall.com/lists/oss-security/2021/10/21/4", "name": "[oss-security] 20211021 Mailman 2.1.35 security release", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "refsource": "MLIST"}, {"url": "https://www.debian.org/security/2021/dsa-4991", "name": "DSA-4991", "tags": ["Third Party Advisory"], "refsource": "DEBIAN"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A csrf_token value is not specific to a single user account. An attacker can obtain a value within the context of an unprivileged user account, and then use that value in a CSRF attack against an admin (e.g., for account takeover)."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-352"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-42097", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 8.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:S/C:C/I:C/A:C", "authentication": "SINGLE", "integrityImpact": "COMPLETE", "accessComplexity": "MEDIUM", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "severity": "HIGH", "acInsufInfo": false, "impactScore": 10.0, "obtainAllPrivilege": false, "exploitabilityScore": 6.8, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.0, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.1}}, "publishedDate": "2021-10-21T01:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:gnu:mailman:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "2.1.35"}]}, {"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": "2021-11-05T18:46Z"}