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:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.3 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
30.8%
Issue Overview:
A flaw was found in mod_auth_mellon where it does not sanitize logout URLs properly. This issue could be used by an attacker to facilitate phishing attacks by tricking users into visiting a trusted web application URL that redirects to an external and potentially malicious server. The highest threat from this liability is to confidentiality and integrity. (CVE-2021-3639)
Affected Packages:
mod_auth_mellon
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update mod_auth_mellon to update your system.
New Packages:
aarch64:
mod_auth_mellon-0.14.0-9.amzn2.0.1.aarch64
mod_auth_mellon-debuginfo-0.14.0-9.amzn2.0.1.aarch64
mod_auth_mellon-diagnostics-0.14.0-9.amzn2.0.1.aarch64
i686:
mod_auth_mellon-0.14.0-9.amzn2.0.1.i686
mod_auth_mellon-debuginfo-0.14.0-9.amzn2.0.1.i686
mod_auth_mellon-diagnostics-0.14.0-9.amzn2.0.1.i686
src:
mod_auth_mellon-0.14.0-9.amzn2.0.1.src
x86_64:
mod_auth_mellon-0.14.0-9.amzn2.0.1.x86_64
mod_auth_mellon-debuginfo-0.14.0-9.amzn2.0.1.x86_64
mod_auth_mellon-diagnostics-0.14.0-9.amzn2.0.1.x86_64
Red Hat: CVE-2021-3639
Mitre: CVE-2021-3639
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:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.3 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
30.8%