CVE-2020-25125

GnuPG 2.2.21 and 2.2.22 (and Gpg4win 3.1.12) has an array overflow, leading to a crash or possibly unspecified other impact, when a victim imports an attacker's OpenPGP key, and this key has AEAD preferences. The overflow is caused by a g10/key-check.c error. NOTE: GnuPG 2.3.x is unaffected. GnuPG 2.2.23 is a fixed version.

CVSS v3 7.8 HIGH
CVSS v2.0 6.8 MEDIUM

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://www.openwall.com/lists/oss-security/2020/09/03/4	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/09/03/5	Mailing List Third Party Advisory
https://bugzilla.opensuse.org/show_bug.cgi?id=1176034	Exploit Issue Tracking Third Party Advisory
https://dev.gnupg.org/T5050	Mailing List
https://dev.gnupg.org/rG8ec9573e57866dda5efb4677d4454161517484bc	Patch Vendor Advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2020q3/000448.html	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:gnupg:gnupg:2.2.21:::::::*
	cpe:2.3:a:gnupg:gnupg:2.2.22:::::::*
	cpe:2.3:a:gpg4win:gpg4win:3.1.12:::::::*

History

No history.

Information

Published : 2020-09-03 18:15

Updated : 2024-02-28 17:47

NVD link : CVE-2020-25125

Mitre link : CVE-2020-25125

CVE.ORG link : CVE-2020-25125

JSON object : View

Products Affected

gnupg

gnupg

gpg4win

gpg4win

CWE

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

{"id": "CVE-2020-25125", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2020-09-03T18:15:15.160", "references": [{"url": "http://www.openwall.com/lists/oss-security/2020/09/03/4", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2020/09/03/5", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://bugzilla.opensuse.org/show_bug.cgi?id=1176034", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://dev.gnupg.org/T5050", "tags": ["Mailing List"], "source": "cve@mitre.org"}, {"url": "https://dev.gnupg.org/rG8ec9573e57866dda5efb4677d4454161517484bc", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://lists.gnupg.org/pipermail/gnupg-announce/2020q3/000448.html", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-120"}]}], "descriptions": [{"lang": "en", "value": "GnuPG 2.2.21 and 2.2.22 (and Gpg4win 3.1.12) has an array overflow, leading to a crash or possibly unspecified other impact, when a victim imports an attacker's OpenPGP key, and this key has AEAD preferences. The overflow is caused by a g10/key-check.c error. NOTE: GnuPG 2.3.x is unaffected. GnuPG 2.2.23 is a fixed version."}, {"lang": "es", "value": "GnuPG versiones 2.2.21 y 2.2.22 (y Gpg4win versi\u00f3n 3.1.12), presenta un desbordamiento de la matriz, conllevando a un bloqueo o posiblemente otro impacto no especificado, cuando una v\u00edctima importa la clave OpenPGP de un atacante, y esta clave contiene preferencias AEAD. El desbordamiento es causado por un error en el archivo g10/key-check.c. NOTA: GnuPG versi\u00f3n 2.3.x, no est\u00e1 afectado. GnuPG versi\u00f3n 2.2.23 es una versi\u00f3n corregida"}], "lastModified": "2020-09-11T13:49:35.847", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:gnupg:gnupg:2.2.21:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "36CA3361-1B43-4A9B-A941-01D6EEEDCEEA"}, {"criteria": "cpe:2.3:a:gnupg:gnupg:2.2.22:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "74C78597-A629-4D17-A788-2388854223FC"}, {"criteria": "cpe:2.3:a:gpg4win:gpg4win:3.1.12:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4CF58960-B2B6-4A6A-8595-831786580911"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}