—–BEGIN PGP SIGNED MESSAGE—–
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2023.3993
lemonldap-ng security update
17 July 2023
===========================================================================
AusCERT Security Bulletin Summary
———————————
Product: lemonldap-ng
Publisher: Debian
Operating System: Debian GNU/Linux
Resolution: Patch/Upgrade
CVE Names: CVE-2023-28862
Original Bulletin:
https://lists.debian.org/debian-lts-announce/2023/07/msg00018.html
Comment: CVSS (Max): 9.8 CVE-2023-28862 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: NVD
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
– ————————–BEGIN INCLUDED TEXT——————–
– ————————————————————————-
Debian LTS Advisory DLA-3496-1 [email protected]
https://www.debian.org/lts/security/ Guilhem Moulin
July 14, 2023 https://wiki.debian.org/LTS
– ————————————————————————-
Package : lemonldap-ng
Version : 2.0.2+ds-7+deb10u9
CVE ID : CVE-2023-28862
Issues were discovered in Lemonldap::NG, an OpenID-Connect, CAS and SAML
compatible Web-SSO system, which could lead to impersonation of users
with a second factor authentication.
Weak session ID generation in the AuthBasic handler and incorrect
failure handling during a password check allow attackers to bypass 2FA
verification. Any plugin that tries to deny session creation after the
store step does not deny an AuthBasic session.
Using the AuthBasic handler is now refused for users with a second
factor. Admins who are *absolutely sure* that such accounts should be
able to use AuthBasic handlers (which are password only) can append `and
not $ENV{AuthBasic}` to the 2FA activation rules.
For Debian 10 buster, these problems have been fixed in version
2.0.2+ds-7+deb10u9.
We recommend that you upgrade your lemonldap-ng packages.
For the detailed security status of lemonldap-ng please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/lemonldap-ng
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
– —–BEGIN PGP SIGNATURE—–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=1iSn
– —–END PGP SIGNATURE—–
– ————————–END INCLUDED TEXT——————–
You have received this e-mail bulletin as a result of your organisation’s
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to [email protected]
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT’s members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation’s
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author’s website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: [email protected]
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
—–BEGIN PGP SIGNATURE—–
Comment: https://auscert.org.au/gpg-key/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=tXPF
—–END PGP SIGNATURE—–
Source: Read More
Security Bulletins