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

18 Nov 2021, 17:44

Type	Values Removed	Values Added
CWE	~~CWE-200~~	CWE-20

Information

Published : 2020-09-01 00:15

Updated : 2024-02-04 21:00

NVD link : CVE-2020-15704

Mitre link : CVE-2020-15704

CVE.ORG link : CVE-2020-15704

JSON object : View

Products Affected

canonical

ubuntu_linux
ppp

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. 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