CVE-2020-15704

The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed patch file incorrectly handled module loading. A local non-root attacker could exploit the MODPROBE_OPTIONS environment variable to read arbitrary root files. Fixed in 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Was ZDI-CAN-11504.

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://ubuntu.com/security/notices/USN-4451-1	Vendor Advisory
https://ubuntu.com/security/notices/USN-4451-2	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*

Configuration 4 (hide)

AND

cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*

Configuration 5 (hide)

AND

cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*

History

No history.

Information

Published : 2020-09-01 00:15

Updated : 2024-02-28 17:47

NVD link : CVE-2020-15704

Mitre link : CVE-2020-15704

CVE.ORG link : CVE-2020-15704

JSON object : View

Products Affected

canonical

ppp
ubuntu_linux

CWE

CWE-20

Improper Input Validation

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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A local non-root attacker could exploit the MODPROBE_OPTIONS environment variable to read arbitrary root files. Fixed in 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Was ZDI-CAN-11504."}, {"lang": "es", "value": "El proceso hijo modprobe en el archivo de parche ./debian/patches/load_ppp_generic_if_needed manej\u00f3 incorrectamente la carga del m\u00f3dulo. Un atacante local que no sea root podr\u00eda explotar la variable de entorno MODPROBE_OPTIONS para leer archivos root arbitrarios. Corregido en las versiones 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Fue ZDI-CAN-11504"}], "lastModified": "2021-11-18T17:44:58.203", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E60D6693-6626-4A52-9850-0C4B1B6832B3", "versionEndExcluding": "2.4.7-1\\+ubuntu1.16.04.3"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "vulnerable": false, "matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B437B873-DB91-41A3-908F-2F96CD4442B7", "versionEndExcluding": "2.4.7-2\\+2ubuntu1.3"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "vulnerable": false, "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B11FD69C-C04C-4021-9B6F-4332452438FF", "versionEndExcluding": "2.4.7-2\\+4.1ubuntu5.1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*", "vulnerable": false, "matchCriteriaId": "902B8056-9E37-443B-8905-8AA93E2447FB"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DEFE769D-23DE-424A-805E-FB365889AA83", "versionEndExcluding": "2.4.5-5ubuntu1.4"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*", "vulnerable": false, "matchCriteriaId": "8D305F7A-D159-4716-AB26-5E38BB5CD991"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6CB91908-008C-478D-B667-5C1BC8B75C93", "versionEndExcluding": "2.4.5-5.1ubuntu2.3\\+esm2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*", "vulnerable": false, "matchCriteriaId": "815D70A8-47D3-459C-A32C-9FEACA0659D1"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "security@ubuntu.com"}