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buffoon: InputStream::read_exact : Reading into an uninitialized buffer may cause UB (#663)

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* Report 0081-buffoon to RustSec

* informational = "unsound"
This commit is contained in:
Youngsuk Kim
2021-08-21 21:28:07 -04:00
committed by GitHub
parent 06d14ff7f7
commit 09e0afc373
1 changed files with 19 additions and 0 deletions
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crates/buffoon/RUSTSEC-0000-0000.md Normal file
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```toml
[advisory]
id = "RUSTSEC-0000-0000"
package = "buffoon"
date = "2020-12-31"
url = "https://github.com/carllerche/buffoon/issues/2"
categories = ["memory-exposure"]
informational = "unsound"
[versions]
patched = []
```
# InputStream::read_exact : `Read` on uninitialized buffer causes UB
Affected versions of this crate passes an uninitialized buffer to a user-provided `Read` implementation.
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.