Apache Struts contains a vulnerability that could allow an unauthenticated, remote attacker to bypass security restrictions. Updates are available.
A vulnerability in the ActionMapper component of Apache Struts could allow an unauthenticated, remote attacker to bypass security restrictions on a targeted system.
The vulnerability is due to insufficient security restrictions imposed by the affected software. An attacker could exploit this vulnerability using unknown vectors. An exploit could allow the attacker to gain unauthorized access on the system.
Apache.org has confirmed this vulnerability and released updated software.
Apache Struts versions 2.0.0 through 220.127.116.11 are vulnerable.
To exploit the vulnerability, the attacker may need access to trusted or internal networks to be able to transmit crafted requests to the targeted system. This access requirement could limit the likelihood of a successful attack.
Apache has released a security advisory at the following link: S2-018
An unauthenticated, remote attacker could exploit the vulnerability to bypass security restrictions imposed by Apache Struts.
The vulnerability is in the mapping mechanism, which is supposed to attach navigational information to buttons in forms. The prefix action: fails to perform its intended operation. An attacker could bypass security restrictions.
Further technical information is not available.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to monitor affected systems.
Apache has released updated software at the following link: Struts 18.104.22.168
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