CVE-2021-37587

In Charm 0.43, any single user can decrypt DAC-MACS or MA-ABE-YJ14 data.

CVSS v3.0 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://www2.hci.uni-hannover.de/papers/Tan2019.pdf	Technical Description Third Party Advisory
https://github.com/JHUISI/charm/issues/276	Issue Tracking Third Party Advisory
https://jhuisi.github.io/charm/charm/schemes/abenc/abenc_dacmacs_yj14.html	Third Party Advisory
https://jhuisi.github.io/charm/_modules/abenc_maabe_yj14.html	Patch Third Party Advisory
https://eprint.iacr.org/2020/460	Third Party Advisory

Advertisement

Configurations

Configuration 1 (hide)

cpe:2.3:a:jhu:charm:0.43:*:*:*:*:*:*:*

Information

Published : 2021-07-30 07:15

Updated : 2022-07-12 10:42

NVD link : CVE-2021-37587

Mitre link : CVE-2021-37587

JSON object : View

CWE

CWE-327

Use of a Broken or Risky Cryptographic Algorithm

Advertisement

Products Affected

jhu

charm

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://www2.hci.uni-hannover.de/papers/Tan2019.pdf", "name": "https://www2.hci.uni-hannover.de/papers/Tan2019.pdf", "tags": ["Technical Description", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://github.com/JHUISI/charm/issues/276", "name": "https://github.com/JHUISI/charm/issues/276", "tags": ["Issue Tracking", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://jhuisi.github.io/charm/charm/schemes/abenc/abenc_dacmacs_yj14.html", "name": "https://jhuisi.github.io/charm/charm/schemes/abenc/abenc_dacmacs_yj14.html", "tags": ["Third Party Advisory"], "refsource": "MISC"}, {"url": "https://jhuisi.github.io/charm/_modules/abenc_maabe_yj14.html", "name": "https://jhuisi.github.io/charm/_modules/abenc_maabe_yj14.html", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://eprint.iacr.org/2020/460", "name": "https://eprint.iacr.org/2020/460", "tags": ["Third Party Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "In Charm 0.43, any single user can decrypt DAC-MACS or MA-ABE-YJ14 data."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-327"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-37587", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N", "authentication": "SINGLE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.8}}, "publishedDate": "2021-07-30T14:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:jhu:charm:0.43:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2022-07-12T17:42Z"}