Denis Ovsienko

**Nome do Software Vulnerável e Versões Afetadas** libpcap versões anteriores a 1.10.7 **Descrição** O interpretador BPF não valida o índice do registrador ao carregar ou armazenar valores de/para um registrador de memória temporária (scratch memory register). Embora o índice seja um inteiro de 32 bits sem sinal que não deve exceder 15, a falta de validação permite que um programa de filtro manipulado force leituras e gravações na memória do processo fora dos limites pretendidos. Em arquiteturas de 64 bits, isso pode afetar os 16GiB de memória a partir do quadro de pilha atual e, em arquiteturas de 32 bits, pode afetar todo o espaço de endereçamento. **Recomendações** Atualize para a versão 1.10.7.

libpcap BPF interpreter detects neither reaching the end of the filter program buffer due to lack of a return instruction nor executing a jump instruction with an offset that translates to a pointer outside of the buffer. In particular uncommon use cases a crafted filter program can cause the interpreter to try reading the OS process memory in the 32GiB around the buffer on 64-bit architectures and in the entire address space on 32-bit architectures.

libpcap BPF interpreter for the 'div #k' and 'mod #k' ALU instructions does not check whether the immediate value is zero. In particular uncommon use cases a crafted filter program can cause a division by zero.

**Name of the Vulnerable Software and Affected Versions** Quagga versions prior to 0.99.22.4 Quagga version 0.99.15 **Description** The issue affects the Quagga package, allowing remote attackers to exploit multiple vulnerabilities, potentially leading to disruption of confidentiality, integrity, and availability of protected information. The exploitation can be carried out remotely. Specifically, the `bgp capability orf` function in `bgpd` in Quagga 0.99.20.1 and earlier is vulnerable to a denial of service (assertion failure and daemon exit) by sending a malformed Outbound Route Filtering (ORF) capability TLV in an OPEN message, leveraging a BGP peering relationship. **Recommendations** For Quagga versions prior to 0.99.22.4, update to version 0.99.22.4 or later to resolve the issue. For Quagga version 0.99.15, consider disabling the `bgp capability orf` function as a temporary workaround until a patch is available. Restrict access to the Quagga package to minimize the risk of exploitation.