| Título | Tomato by Shibby Tomato Firmware 1.28 Stack-based Buffer Overflow |
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| Descrição | All three apcupsd CGI programs share a common getupsvar() function that retrieves UPS status data from the apcupsd daemon via TCP port 3551. For 31 out of 37 recognized field names (those with internal flag v11 == 1), the function extracts the field value using:
sscanf(line_ptr, "%*s %*s %s", caller_buffer);
The %s format specifier has no field-width limiter and writes unlimited bytes until whitespace. The caller-supplied buffer size parameter (a4) is present in the function signature but completely ignored in this code path. Typical callers pass 64-byte stack buffers. |
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| Fonte | ⚠️ https://gitee.com/Fengyi-Wang/CVE/issues/IJTQ5M |
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| Utilizador | Anonymous User |
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| Submissão | 10/06/2026 15h53 (há 1 mês) |
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| Moderação | 12/07/2026 23h01 (1 month later) |
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| Estado | Aceite |
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| Entrada VulDB | 377894 [Shibby Tomato até 1.28.0000 apcupsd tomatodata.cgi getupsvar Campo Excesso de tampão] |
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| Pontos | 20 |
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