From 72e61b6d12b9ffbb1b04a86817c0cee53a5cb885 Mon Sep 17 00:00:00 2001 From: Youngsuk Kim Date: Sat, 21 Aug 2021 21:25:59 -0400 Subject: [PATCH] columnar: Reading on uninitialized buffer may cause UB (#662) * Report 0102-columnar to RustSec * informational = "unsound" --- crates/columnar/RUSTSEC-0000-0000.md | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 crates/columnar/RUSTSEC-0000-0000.md diff --git a/crates/columnar/RUSTSEC-0000-0000.md b/crates/columnar/RUSTSEC-0000-0000.md new file mode 100644 index 0000000..3a51142 --- /dev/null +++ b/crates/columnar/RUSTSEC-0000-0000.md @@ -0,0 +1,19 @@ +```toml +[advisory] +id = "RUSTSEC-0000-0000" +package = "columnar" +date = "2021-01-07" +url = "https://github.com/frankmcsherry/columnar/issues/6" +categories = ["memory-exposure"] +informational = "unsound" + +[versions] +patched = [] +``` + +# columnar: `Read` on uninitialized buffer may cause UB (ColumnarReadExt::read_typed_vec()) + +Affected versions of this crate passes an uninitialized buffer to a user-provided `Read` implementation (`ColumnarReadExt::read_typed_vec()`). + +Arbitrary `Read` implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer. +Reading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.