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ubuntucveUbuntu.comUB:CVE-2019-12290
HistoryOct 22, 2019 - 12:00 a.m.

CVE-2019-12290

2019-10-2200:00:00
ubuntu.com
ubuntu.com
9

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.003 Low

EPSS

Percentile

71.2%

GNU libidn2 before 2.2.0 fails to perform the roundtrip checks specified in
RFC3490 Section 4.2 when converting A-labels to U-labels. This makes it
possible in some circumstances for one domain to impersonate another. By
creating a malicious domain that matches a target domain except for the
inclusion of certain punycoded Unicode characters (that would be discarded
when converted first to a Unicode label and then back to an ASCII label),
arbitrary domains can be impersonated.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlibidn2< 2.0.4-1.1ubuntu0.2UNKNOWN
ubuntu19.04noarchlibidn2< 2.0.5-1ubuntu0.3UNKNOWN
ubuntu16.04noarchlibidn2-0< anyUNKNOWN
ubuntu14.04noarchlibidn2-0< anyUNKNOWN

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.003 Low

EPSS

Percentile

71.2%

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