| Titre | Tomato by Shibby Tomato Firmware 1.28 Stack-based Buffer Overflow |
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| Description | 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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| La source | ⚠️ https://gitee.com/Fengyi-Wang/CVE/issues/IJTQ5M |
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| Utilisateur | Anonymous User |
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| Soumission | 10/06/2026 15:53 (il y a 1 mois) |
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| Modérer | 12/07/2026 23:01 (1 month later) |
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| Statut | Accepté |
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| Entrée VulDB | 377894 [Shibby Tomato jusqu’à 1.28.0000 apcupsd tomatodata.cgi getupsvar Champ buffer overflow] |
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| Points | 20 |
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