CVE-2017-15335 in DPxxx
Summary
by MITRE
The SIP backup feature in Huawei DP300 V500R002C00, IPS Module V100R001C10, V100R001C20, V100R001C30, V500R001C00, V500R001C20, V500R001C30, V500R001C50, NGFW Module V100R001C10, V100R001C20, V100R001C30, V500R001C00, V500R001C20, V500R002C00, V500R002C10, NIP6300 V500R001C00, V500R001C20, V500R001C30, V500R001C50, NIP6600 V500R001C00, V500R001C20, V500R001C30, V500R001C50, NIP6800 V500R001C50, RP200 V500R002C00, V600R006C00, SVN5600 V200R003C00, V200R003C10, SVN5800 V200R003C00, V200R003C10, SVN5800-C V200R003C00, V200R003C10, SeMG9811 V300R001C01, Secospace USG6300 V100R001C10, V100R001C20, V100R001C30, V500R001C00, V500R001C20, V500R001C30, V500R001C50, Secospace USG6500 V100R001C10, V100R001C20, V100R001C30, V500R001C00, V500R001C20, V500R001C30, V500R001C50, Secospace USG6600 V100R001C00, V100R001C20, V100R001C30, V500R001C00, V500R001C20, V500R001C30, V500R001C50, TE30 V100R001C02, V100R001C10, V500R002C00, V600R006C00, TE40 V500R002C00, V600R006C00, TE50 V500R002C00, V600R006C00, TE60 V100R001C01, V100R001C10, V500R002C00, V600R006C00, USG9500 V500R001C00, V500R001C20, V500R001C30, USG9520 V300R001C01, V300R001C20, USG9560 V300R001C01, V300R001C20, USG9580 V300R001C01, V300R001C20, VP9660 V200R001C02, V200R001C30, V500R002C00, V500R002C10, ViewPoint 8660 V100R008C03, ViewPoint 9030 V100R011C02, V100R011C03, eSpace U1981 V100R001C20, V200R003C00, V200R003C20, V200R003C30 has a buffer overflow vulnerability. An attacker may send specially crafted messages to the affected products. Due to the insufficient validation of some values for SIP messages, successful exploit may cause services abnormal.
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Analysis
by VulDB Data Team • 02/06/2023
The vulnerability identified as CVE-2017-15335 affects Huawei's SIP backup functionality across multiple network security appliances and communication devices. This buffer overflow vulnerability resides within the SIP (Session Initiation Protocol) backup feature implementation, which is critical for maintaining high availability in enterprise communication environments. The affected products span across Huawei's comprehensive portfolio including DP300 series, IPS modules, NGFW modules, NIP series, RP200, SVN series, SeMG9811, various USG series firewalls, TE series video conferencing devices, USG9500 series, VP9660, ViewPoint series, and eSpace U1981. The vulnerability stems from inadequate validation of SIP message parameters during the backup process, creating a potential attack surface where malicious actors can manipulate system behavior through crafted SIP communications.
The technical flaw manifests as a classic buffer overflow condition when processing SIP backup messages, specifically in how the system handles certain parameter values within SIP protocols. This vulnerability falls under CWE-121, which describes stack-based buffer overflow conditions, and aligns with ATT&CK technique T1203, which covers exploitation of remote services. The insufficient input validation allows attackers to craft malicious SIP messages that exceed buffer boundaries when processed by the backup feature. The vulnerability's impact extends beyond simple service disruption, potentially enabling arbitrary code execution or complete system compromise depending on the specific implementation and access controls. Attackers can leverage this weakness to cause abnormal service behavior, which may include system crashes, unexpected restarts, or even full system takeover.
The operational impact of this vulnerability is significant for organizations relying on Huawei's security infrastructure, as it affects critical backup and failover mechanisms that ensure continuous communication services. Network administrators managing these devices face potential risks including service interruptions during critical communication periods, unauthorized access to backup configurations, and possible data exposure through system instability. The vulnerability's presence in multiple product lines suggests a systemic issue in Huawei's SIP implementation approach, making it particularly concerning for large enterprises with extensive deployments. Organizations may experience unplanned downtime during critical business hours when backup mechanisms fail due to buffer overflow conditions, potentially compromising communication integrity and business continuity.
Mitigation strategies should focus on immediate firmware updates from Huawei to address the buffer overflow vulnerability in SIP backup functionality. Network administrators should implement network segmentation to limit access to SIP backup ports and services, while also monitoring for suspicious SIP traffic patterns that may indicate exploitation attempts. The implementation of intrusion detection systems specifically configured to identify malformed SIP messages can provide early warning of potential attacks. Additionally, organizations should consider disabling SIP backup features if not immediately required, and establish robust patch management procedures to ensure timely deployment of security updates. Regular security assessments of SIP implementations and network access controls should be conducted to prevent exploitation of similar vulnerabilities in other protocol implementations. Organizations may also benefit from implementing network access control lists that restrict SIP backup communication to trusted sources only, reducing the attack surface for this specific vulnerability.