Critical severity · published Sep 25, 2019
CVE-2019-15941
OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request
9.8
CVSS
2.5%
EPSS
No
On KEV
Description
OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request. To be vulnerable, there must exist an OIDC Relaying party within the LemonLDAP configuration with weaker access control rules than the target RP, and no filtering on redirection URIs.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.5% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
LE
Lemonldap::ng · Lemonldap-ng
2.0.0 through 2.0.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-15941
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-15941
Third Party Advisory
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1881
Third Party Advisory
https://projects.ow2.org/view/lemonldap-ng/lemonldap-ng-2-0-6-is-out/
Mailing List
https://seclists.org/bugtraq/2019/Sep/46
Third Party Advisory
https://www.debian.org/security/2019/dsa-4533
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