| Título | Tomato by Shibby Tomato Firmware Tomato v1.28 RT-N5x MIPSR2 build 124 Mini Stack-based Buffer Overflow |
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| Descrição | sub_40BB50 renders Web monitor records from /proc/webmon_recent_domains and /proc/webmon_recent_searches. Each line is parsed with sscanf("%lu\t%s\t%s", ...) into fixed-size stack buffers.
int ts;
char name[64];
unsigned char text[256];
char line[512];
unsigned char host[1028];
sprintf(line, "/proc/webmon_recent_%s", kind);
fp = fopen(line, "r");
while (fgets(line, 512, fp)) {
if (sscanf(line, "%lu\t%s\t%s", &ts, name, text) == 3) {
resolve_addr(name, host);
escaped = utf8_to_js_string(text);
web_printf(..., name, escaped, ...);
}
}
The %s format specifiers do not limit the number of bytes copied into name[64] or text[256]. A long domain/search token recorded by webmon can overwrite adjacent stack variables. |
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| Fonte | ⚠️ https://gitee.com/Fengyi-Wang/CVE/issues/IJTQ5T |
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| Utilizador | Cormac315 (UID 97273) |
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| Submissão | 10/06/2026 16h22 (há 1 mês) |
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| Moderação | 17/07/2026 16h14 (1 month later) |
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| Estado | Aceite |
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| Entrada VulDB | 379800 [Shibby Tomato 1.28 RT-N5x MIPSR2 Build 124 webmon_recent_domains sub_40BB50 Excesso de tampão] |
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| Pontos | 20 |
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