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In FRRouting (FRR) before 10.3 from 6.0 onward, all routes are re-validated if the total size of an update received via RTR exceeds the internal socket's buffer size, default 4K on most OSes. An attacker can use this to trigger re-parsing of the RIB for FRR routers using RTR by causing more than this number of updates during an update interval (usually 30 minutes). Additionally, this effect regularly occurs organically. Furthermore, an attacker can use this to trigger route validation continuously. Given that routers with large full tables may need more than 30 minutes to fully re-validate the table, continuous issuance/withdrawal of large numbers of ROA may be used to impact the route handling performance of all FRR instances using RPKI globally. Additionally, the re-validation will cause heightened BMP traffic to ingestors. Fixed Versions: 10.0.3, 10.1.2, 10.2.1, >= 10.3.

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FRRouting 安全漏洞

FRRouting是FRRouting开源的一种在类 Unix 平台上运行的网络路由软件套件。 FRRouting 10.3之前版本存在安全漏洞，该漏洞源于攻击者可以通过发送大约500个RPKI更新来触发重复的RIB重新验证，从而导致重新验证时间延长和拒绝服务。

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