CVE-2020-28588

An information disclosure vulnerability exists in the /proc/pid/syscall functionality of Linux Kernel 5.1 Stable and 5.4.66. More specifically, this issue has been introduced in v5.1-rc4 (commit 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0) and is still present in v5.10-rc4, so it’s likely that all versions in between are affected. An attacker can read /proc/pid/syscall to trigger this vulnerability, which leads to the kernel leaking memory contents.

CVSS v3 5.5 MEDIUM
CVSS v2.0 2.1 LOW

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

2.1^/10

CVSS v2.0 : LOW

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

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1211	Exploit Technical Description Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1211	Exploit Technical Description Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel:5.4.66:::::::*
	cpe:2.3:o:linux:linux_kernel:5.9.8:::::::*
	cpe:2.3:o:linux:linux_kernel:5.10:rc4::::::

History

21 Nov 2024, 05:22

Type	Values Removed	Values Added
References	~~() https://talosintelligence.com/vulnerability_reports/TALOS-2020-1211 - Exploit, Technical Description, Third Party Advisory~~	() https://talosintelligence.com/vulnerability_reports/TALOS-2020-1211 - Exploit, Technical Description, Third Party Advisory

Information

Published : 2021-05-10 19:15

Updated : 2024-11-21 05:22

NVD link : CVE-2020-28588

Mitre link : CVE-2020-28588

CVE.ORG link : CVE-2020-28588

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-681

Incorrect Conversion between Numeric Types

{"id": "CVE-2020-28588", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 2.1, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "LOW", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Secondary", "source": "talos-cna@cisco.com", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 4.0, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 2.5}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/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": 1.8}]}, "published": "2021-05-10T19:15:08.017", "references": [{"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2020-1211", "tags": ["Exploit", "Technical Description", "Third Party Advisory"], "source": "talos-cna@cisco.com"}, {"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2020-1211", "tags": ["Exploit", "Technical Description", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "talos-cna@cisco.com", "description": [{"lang": "en", "value": "CWE-681"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-681"}]}], "descriptions": [{"lang": "en", "value": "An information disclosure vulnerability exists in the /proc/pid/syscall functionality of Linux Kernel 5.1 Stable and 5.4.66. More specifically, this issue has been introduced in v5.1-rc4 (commit 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0) and is still present in v5.10-rc4, so it\u2019s likely that all versions in between are affected. An attacker can read /proc/pid/syscall to trigger this vulnerability, which leads to the kernel leaking memory contents."}, {"lang": "es", "value": "Se presenta una vulnerabilidad de divulgaci\u00f3n de informaci\u00f3n en la funcionalidad /proc/pid/syscall de Linux Kernel versiones 5.1 Stable y 5.4.66. M\u00e1s espec\u00edficamente, este problema ha sido introducido en la versi\u00f3n v5.1-rc4 (commit 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0) y todav\u00eda est\u00e1 presente en la versi\u00f3n v5.10-rc4, por lo que es probable que todas las versiones intermedias est\u00e9n afectadas. Un atacante puede leer /proc/pid/syscall para activar esta vulnerabilidad, que conlleva a la perdida de contenido de la memoria del kernel"}], "lastModified": "2024-11-21T05:22:57.560", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:5.4.66:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "08CD832A-636A-4BF7-B1D2-2D244AEACDD1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9.8:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D0602B82-405F-407B-8C88-7DB0C82D1165"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.10:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0CD159FA-170F-4389-9085-CACCF97ABB1E"}], "operator": "OR"}]}], "sourceIdentifier": "talos-cna@cisco.com"}