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ubuntucveUbuntu.comUB:CVE-2019-3877
HistoryMar 22, 2019 - 12:00 a.m.

CVE-2019-3877

2019-03-2200:00:00
ubuntu.com
ubuntu.com
16
mod_auth_mellon
v0.14.2
open redirect
backslashes
apr_uri_parse
unix

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

6.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.003

Percentile

68.4%

A vulnerability was found in mod_auth_mellon before v0.14.2. An open
redirect in the logout URL allows requests with backslashes to pass through
by assuming that it is a relative URL, while the browsers silently convert
backslash characters into forward slashes treating them as an absolute URL.
This mismatch allows an attacker to bypass the redirect URL validation
logic in apr_uri_parse function.

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

6.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.003

Percentile

68.4%