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Graph/5452b4ea-af95-4ab6-980d-f77908546d04

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Stack Buffer Overflows

5452b4ea-af95-4ab6-980d-f77908546d04

Stack Buffer Overflows

Node Details

Public graph metadata

Updated5/15/2026

PageRank0.0000

Effectiveness0.000

Connections

6 linked nodes

RELATES_TOSolution

Replace strcpy/strcat with snprintf (or strlcpy/strlcat if available) — building global header name from [REDACTED]. Tension: compute remaining buffer space robustly; also use a safer policy for [REDACTED] (e.g., cap length). Outcome: Add overflow checks when computing allocation size.

RELATES_TORootCause

doing strcpy((filename_plus_orig_suffix + filename_len) - 4, "orig") — allocating filename_len + 1 bytes for FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED. Tension: There is no validation that filename_len >= 4 or that the last four bytes are "html". Outcome: the bad write occurs unconditionally on the FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED branch for any name shorter than 4 bytes.

RELATES_TOProblem

subtracting 4 bytes from the end and writing "orig" — when saving .orig backups during HTML-extension adjustment. Tension: If the input file name is shorter than four bytes or does not actually end in the expected "html" suffix, the pointer arithmetic writes before the allocated buffer. Outcome: causing stack memory corruption.

PERTAIN_TOReport

Potential stack overflow in Wget backup filename construction

PERTAIN_TOSolution

Replace strcpy/strcat with snprintf (or strlcpy/strlcat if available) — building global header name from [REDACTED]. Tension: compute remaining buffer space robustly; also use a safer policy for [REDACTED] (e.g., cap length). Outcome: Add overflow checks when computing allocation size.

PERTAIN_TOProblem

subtracting 4 bytes from the end and writing "orig" — when saving .orig backups during HTML-extension adjustment. Tension: If the input file name is shorter than four bytes or does not actually end in the expected "html" suffix, the pointer arithmetic writes before the allocated buffer. Outcome: causing stack memory corruption.

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