GHSA-x96m-rh44-vgv8
Apache Shiro: LDAP DN Injection in DefaultLdapRealm
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Maven | org.apache.shiro:shiro-core | < 2.2.1 | 2.2.1 |
| Maven | org.apache.shiro:shiro-core | >= 3.0.0-alpha-0, < 3.0.0-alpha-2 | 3.0.0-alpha-2 |
Details
As written in the advisory (Markdown source, shown as plain text).
A remote attacker can inject LDAP special characters into the Distinguished Name (DN) construction in DefaultLdapRealm class. User-supplied username input is directly concatenated into the LDAP DN template without any escaping of RFC 2253 special characters. This allows an attacker to manipulate the DN structure used for LDAP bind authentication, potentially bypassing authentication or impersonating other users.
This issue affects all Apache Shiro versions through 2.2.0, and 3.0.0-alpha-1 when using DefaultLdapRealm
Upgrade to Apache Shiro 2.2.1 or 3.0.0-alpha-2 or later, which fixes the issue.
References
External links from the advisory. They lead to third-party sites.