🛡️ Sentinel: [MEDIUM] Fix Information Disclosure via Unvalidated Arguments

.jules/sentinel.md

@@ -12,3 +12,7 @@
 **Vulnerability:** Raw `stop()` and `warning()` calls without `call. = FALSE` in `llcont.R` and `vuongtest.R` exposed execution stack/call details when raised.
 **Learning:** While some instances of `stop()` inside `tryCatch()` were previously fixed to hide the call stack, other standalone exceptions and warnings still leaked call context. Security must be consistently applied across the entire codebase.
 **Prevention:** Always set `call. = FALSE` when using `stop()` or `warning()` to enforce a secure-by-default boundary and prevent internal execution paths from being disclosed to the end user.
+## 2024-08-23 - Prevent Information Disclosure via Unvalidated Arguments in Exported Functions
+**Vulnerability:** Unvalidated arguments (`nested`, `adj` in `vuongtest`, `conf.level` in `icci`) passed to exported functions could trigger raw R errors deep inside internal logic (e.g., `the condition has length > 1`, `missing value where TRUE/FALSE needed`), leaking internal execution contexts.
+**Learning:** In R, native control flow functions like `if` are strict and evaluate to raw unhandled errors when given `NA` or vectors of length > 1, bypassing top-level `stop(..., call. = FALSE)` safeguards.
+**Prevention:** Always strictly validate the type, length, and bounds of user inputs (e.g., checking for length 1 and `!is.na()`) at the very beginning of exported functions to fail securely with `call. = FALSE`.

R/icci.R

@@ -65,6 +65,10 @@
 #' @export
 icci <- function(object1, object2, conf.level=.95, ll1=llcont, ll2=llcont) {
 
+  if (!is.numeric(conf.level) || length(conf.level) != 1 || is.na(conf.level) || conf.level <= 0 || conf.level >= 1) {
+    stop("Argument 'conf.level' must be a single numeric value between 0 and 1", call. = FALSE)
+  }
+
   ## check objects, issue warnings/errors, get classes/calls
   obinfo <- check.obj(object1, object2)
   callA <- obinfo$callA; classA <- obinfo$classA

R/vuongtest.R

@@ -98,6 +98,13 @@
 #' @export
 vuongtest <- function(object1, object2, nested=FALSE, adj="none", ll1=llcont, ll2=llcont, score1=NULL, score2=NULL, vc1=vcov, vc2=vcov) {
 
+  if (!is.logical(nested) || length(nested) != 1 || is.na(nested)) {
+    stop("Argument 'nested' must be a single logical value (TRUE/FALSE)", call. = FALSE)
+  }
+  if (!is.character(adj) || length(adj) != 1 || is.na(adj) || !(adj %in% c("none", "aic", "bic"))) {
+    stop("Argument 'adj' must be one of 'none', 'aic', or 'bic'", call. = FALSE)
+  }
+
   ## check objects, issue warnings/errors, get classes/calls
   obinfo <- check.obj(object1, object2)
   callA <- obinfo$callA; classA <- obinfo$classA