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freebsdFreeBSDEFB965BE-A2C0-11EB-8956-1951A8617E30
HistoryMar 02, 2021 - 12:00 a.m.

openvpn -- deferred authentication can be bypassed in specific circumstances

2021-03-0200:00:00
vuxml.freebsd.org
23
openvpn
deferred authentication
remote attackers
access control
information leaks
unix

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.029

Percentile

90.8%

JSON

Gert Döring reports:

    OpenVPN 2.5.1 and earlier versions allows a remote attackers to
    bypass authentication and access control channel data on servers
    configured with deferred authentication, which can be used to
    potentially trigger further information leaks.
OSVersionArchitecturePackageVersionFilename
FreeBSDanynoarchopenvpn< 2.5.2UNKNOWN
FreeBSDanynoarchopenvpn-mbedtls< 2.5.2UNKNOWN

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CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.029

Percentile

90.8%

JSON
Related for EFB965BE-A2C0-11EB-8956-1951A8617E30
redos12fedora3openvas10nvd1mageia1debiancve1cvelist1gentoo1prion1nessus9amazon1osv3alpinelinux1ubuntucve1veracode1cve1ubuntu1suse1debian1ibm1