| タイトル | Tomato by Shibby Tomato Firmware Tomato PL ND 1.28 beta Stack-based Buffer Overflow |
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| 説明 | sub_42537C builds a cru a ... scheduler command in a fixed 64-byte stack buffer. The scheduler name argument a1 is inserted into the formatted string twice and is then executed through system().
char cmd[64];
cfg = nvram_get(a1);
sscanf(cfg, "%d,%d,%d", &enabled, &time, &days);
sprintf(cmd, "cru a %s \"%d %d * * %s sched %s\"",
a1, minute, hour, days, a1);
system(cmd);
Two alternate scheduling formats use the same pattern and also place a1 into cmd twice. If a1 is sufficiently long, the formatted command can overflow the 64-byte stack buffer and overwrite saved registers, including the saved return address in the demonstrated layout. |
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| ソース | ⚠️ https://gitee.com/Fengyi-Wang/CVE/issues/IJTQ5U |
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| ユーザー | Cormac315 (UID 97273) |
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| 送信 | 2026年06月10日 16:24 (1 月 ago) |
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| モデレーション | 2026年07月17日 16:14 (1 month later) |
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| ステータス | 承諾済み |
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| VulDBエントリ | 379801 [Shibby Tomato 1.28 Scheduler Name sub_42537C a1 メモリ破損] |
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| ポイント | 20 |
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