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Fix buffer overflow in Gstreamer log function (#382)

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vsprintf() is dangerous, and can overflow easily, especially with small
buffers like the 100 byte one that was being used. This changes the
buffer size to a more sane 4KiB, and uses vsnprintf() to automatically
concatenate a large log message instead of overflowing and crashing.
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tt2468 2024-03-27 13:32:47 -07:00 committed by GitHub
parent db6f9c957e
commit 2b13220d63
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1 changed files with 2 additions and 2 deletions
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4
server/internal/capture/gst/gst.c
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@ -3,8 +3,8 @@
static void gstreamer_pipeline_log(GstPipelineCtx *ctx, char* level, const char* format, ...) { static void gstreamer_pipeline_log(GstPipelineCtx *ctx, char* level, const char* format, ...) {
va_list argptr; va_list argptr;
va_start(argptr, format); va_start(argptr, format);
char buffer[100]; char buffer[4096];
vsprintf(buffer, format, argptr); vsnprintf(buffer, sizeof(buffer), format, argptr);
va_end(argptr); va_end(argptr);
goPipelineLog(level, buffer, ctx->pipelineId); goPipelineLog(level, buffer, ctx->pipelineId);
} }