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Do not write after the end of the array and overwrite the stack when

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colon-separated SGR sequences contain empty arguments. Reported by Sergey
Nizovtsev.
This commit is contained in:
nicm 2020-10-29 16:33:01 +00:00 committed by Nicholas Marriott
parent 7a4aa14618
commit 733abfcfc5
1 changed files with 6 additions and 1 deletions
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7
input.c
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@ -1975,8 +1975,13 @@ input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i)
free(copy); free(copy);
return; return;
} }
} else } else {
n++; n++;
if (n == nitems(p)) {
free(copy);
return;
}
}
log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]);
} }
free(copy); free(copy);