CVE-2021-3639

EUVD-2021-26939
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.
Open Redirect
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 41%
Affected Products (NVD)
VendorProductVersion
uninettmod_auth_mellon
𝑥
< 0.18.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libapache2-mod-auth-mellon
bookworm
0.18.1-1
fixed
bullseye
0.17.0-1+deb11u1
fixed
sid
0.19.1-1
fixed
stretch
no-dsa
trixie
0.19.1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libapache2-mod-auth-mellon
bionic
Fixed 0.13.1-1ubuntu0.3
released
focal
Fixed 0.16.0-1ubuntu0.1
released
hirsute
Fixed 0.17.0-1ubuntu0.21.04.1
released
impish
Fixed 0.17.0-1ubuntu1
released
jammy
Fixed 0.17.0-1ubuntu1
released
kinetic
Fixed 0.17.0-1ubuntu1
released
lunar
Fixed 0.17.0-1ubuntu1
released
mantic
Fixed 0.17.0-1ubuntu1
released
noble
Fixed 0.17.0-1ubuntu1
released
trusty
dne
xenial
needed
Common Weakness Enumeration
References
https://access.redhat.com/security/cve/CVE-2021-3639
https://bugzilla.redhat.com/show_bug.cgi?id=1980648
https://github.com/latchset/mod_auth_mellon/commit/42a11261b9dad2e48d70bdff7c53dd57a12db6f5
https://access.redhat.com/security/cve/CVE-2021-3639
https://bugzilla.redhat.com/show_bug.cgi?id=1980648
https://github.com/latchset/mod_auth_mellon/commit/42a11261b9dad2e48d70bdff7c53dd57a12db6f5