| Name | CVE-2021-35473 |
| Description | An issue was discovered in LemonLDAP::NG before 2.0.12. There is a missing expiration check in the OAuth2.0 handler, i.e., it does not verify access token validity. An attacker can use a expired access token from an OIDC client to access the OAuth2 handler The earliest affected version is 2.0.4. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| lemonldap-ng (PTS) | jessie, jessie (lts) | 1.3.3-1+deb8u2 | vulnerable |
| stretch (security), stretch (lts), stretch | 1.9.7-3+deb9u4 | fixed |
| buster (security), buster, buster (lts) | 2.0.2+ds-7+deb10u10 | fixed |
| bullseye | 2.0.11+ds-4+deb11u5 | fixed |
| bookworm | 2.16.1+ds-deb12u3 | fixed |
| sid, trixie | 2.20.1+ds-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[buster] - lemonldap-ng <not-affected> (OAuth2 Handler introduced later)
[stretch] - lemonldap-ng <not-affected> (OAuth2 Handler introduced later)
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2549