Uninitialized Memory Exposure Affecting flumedb package, versions *


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.24% (63rd percentile)

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  • Snyk IDSNYK-RUST-FLUMEDB-1569209
  • published24 Aug 2021
  • disclosed7 Jan 2021
  • creditJOE1994

Introduced: 7 Jan 2021

CVE-2021-45684  (opens in a new tab)
CWE-201  (opens in a new tab)

How to fix?

There is no fixed version for flumedb.

Overview

flumedb is an Append-only log format used by Secure Scuttlebutt.

Affected versions of this package are vulnerable to Uninitialized Memory Exposure. It passes an uninitialized buffer to a user-provided Read implementation. There are two of such cases (go_offset_log::read_entry() & offset_log::read_entry()). 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.

CVSS Scores

version 3.1