CVE-2003-0745 in SNMPc
Summary
by MITRE
SNMPc 6.0.8 and earlier performs authentication to the server on the client side, which allows remote attackers to gain privileges by decrypting the password that is returned by the server.
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Analysis
by VulDB Data Team • 05/12/2019
The vulnerability identified as CVE-2003-0745 affects SNMPc versions 6.0.8 and earlier, presenting a critical security flaw in the network management software's authentication mechanism. This issue stems from the improper handling of server-side authentication processes where the system performs authentication on the client side rather than following standard server-side validation protocols. The flaw creates a pathway for remote attackers to escalate their privileges within the network management environment.
The technical implementation of this vulnerability resides in the client-side authentication logic where password validation occurs. When the SNMPc client establishes communication with the server, it receives authentication credentials that are subsequently processed on the client machine. This design flaw allows attackers to intercept and decrypt the password information returned by the server, effectively bypassing the intended authentication controls. The vulnerability operates under the weakness category of CWE-287 which specifically addresses improper authentication scenarios in network applications. The flaw represents a classic case of weak credential handling where sensitive authentication data is not properly protected during transmission and processing phases.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass potential full system compromise within the network management infrastructure. Remote attackers who successfully exploit this weakness can gain elevated privileges that would typically require legitimate administrative credentials, allowing them to manipulate network configurations, access sensitive system information, and potentially disrupt network operations. The vulnerability's remote exploitability means that attackers do not need physical access to the network or systems, making it particularly dangerous in enterprise environments where network management tools are extensively deployed. This weakness directly aligns with ATT&CK technique T1078 which covers valid accounts and privilege escalation through legitimate credentials.
Organizations utilizing SNMPc versions 6.0.8 or earlier should immediately implement mitigations including upgrading to patched versions of the software, implementing network segmentation to limit access to management systems, and strengthening overall network security controls. The remediation process should involve comprehensive security audits of all network management tools to identify similar authentication flaws that may exist in other systems. Additionally, implementing proper encryption protocols for all authentication communications and establishing robust monitoring for unauthorized access attempts will help detect exploitation attempts. The vulnerability serves as a reminder of the critical importance of proper authentication implementation and the potential consequences of client-side authentication mechanisms that fail to adequately protect sensitive credential information in network management environments.