PRIOn knowledge basePRION:CVE-2019-3877Open redirect
6.1 Medium
CVSS3
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
5.8 Medium
AI Score
Confidence
High
4.3 Medium
CVSS2
Access Vector
NETWORK
Access 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
0.001 Low
EPSS
Percentile
44.9%
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.
| CPE | Name | Operator | Version |
|---|---|---|---|
| ubuntu_linux | eq | 18.04 | |
| ubuntu_linux | eq | 18.10 | |
| fedora | eq | 29 | |
| mod_auth_mellon | lt | 0.14.2 | |
| enterprise_linux | eq | 7.0 |
References
access.redhat.com/errata/RHSA-2019:0766
access.redhat.com/errata/RHSA-2019:3421
bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3877
github.com/Uninett/mod_auth_mellon/commit/62041428a32de402e0be6ba45fe12df6a83bedb8
github.com/Uninett/mod_auth_mellon/issues/35
lists.fedoraproject.org/archives/list/[email protected]/message/CNW5YMC5TLWVWNJEY6AIWNSNPRAMWPQJ/
lists.fedoraproject.org/archives/list/[email protected]/message/X7NLAU7KROWNTHAYSA2S67X347F42L2I/
usn.ubuntu.com/3924-1/
Related
6.1 Medium
CVSS3
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
5.8 Medium
AI Score
Confidence
High
4.3 Medium
CVSS2
Access Vector
NETWORK
Access 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
0.001 Low
EPSS
Percentile
44.9%