CVE-2022-27255

In Realtek eCos RSDK 1.5.7p1 and MSDK 4.9.4p1, the SIP ALG function that rewrites SDP data has a stack-based buffer overflow. This allows an attacker to remotely execute code without authentication via a crafted SIP packet that contains malicious SDP data.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://forum.defcon.org/node/241835	Third Party Advisory
https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2022-27255.pdf	Vendor Advisory
https://forum.defcon.org/node/241835	Third Party Advisory
https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2022-27255.pdf	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:realtek:ecos_rsdk_firmware:1.5.7p1:*:*:*:*:*:*:*

cpe:2.3:h:realtek:ecos_rsdk:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:realtek:ecos_msdk_firmware:4.9.4p1:*:*:*:*:*:*:*

cpe:2.3:h:realtek:ecos_msdk:-:*:*:*:*:*:*:*

History

21 Nov 2024, 06:55

Type	Values Removed	Values Added
References	~~() https://forum.defcon.org/node/241835 - Third Party Advisory~~	() https://forum.defcon.org/node/241835 - Third Party Advisory
References	~~() https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2022-27255.pdf - Vendor Advisory~~	() https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2022-27255.pdf - Vendor Advisory

Information

Published : 2022-08-01 12:15

Updated : 2024-11-21 06:55

NVD link : CVE-2022-27255

Mitre link : CVE-2022-27255

CVE.ORG link : CVE-2022-27255

JSON object : View

Products Affected

realtek

ecos_rsdk
ecos_rsdk_firmware
ecos_msdk_firmware
ecos_msdk

CWE

CWE-20

Improper Input Validation

{"id": "CVE-2022-27255", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2022-08-01T12:15:08.357", "references": [{"url": "https://forum.defcon.org/node/241835", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2022-27255.pdf", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://forum.defcon.org/node/241835", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2022-27255.pdf", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "In Realtek eCos RSDK 1.5.7p1 and MSDK 4.9.4p1, the SIP ALG function that rewrites SDP data has a stack-based buffer overflow. This allows an attacker to remotely execute code without authentication via a crafted SIP packet that contains malicious SDP data."}, {"lang": "es", "value": "En Realtek eCos RSDK versi\u00f3n 1.5.7p1 y MSDK versi\u00f3n 4.9.4p1, la funci\u00f3n SIP ALG que reescribe los datos SDP presenta un desbordamiento del b\u00fafer en la regi\u00f3n stack de la memoria. Esto permite a un atacante ejecutar c\u00f3digo de forma remota sin autenticaci\u00f3n por medio de un paquete SIP dise\u00f1ado que contenga datos SDP maliciosos"}], "lastModified": "2024-11-21T06:55:30.270", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:realtek:ecos_rsdk_firmware:1.5.7p1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3CBE0A3F-8E2C-4298-9D31-3231EA2A7811"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:realtek:ecos_rsdk:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "21C73A0B-BD03-40CC-866A-5F426C47FCC3"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:realtek:ecos_msdk_firmware:4.9.4p1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CA3FBD15-3C42-4E42-927B-95DAB0C19A57"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:realtek:ecos_msdk:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "DB33169C-4A57-4559-A0EA-9632BB16E0AD"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}