# CVE-2019-15553: Exposure of uninitialized memory in memoffset

Source: https://junglewise.ai/threats/cve-2019-15553-exposure-of-uninitialized-memory-in-memoffset  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2019-07-16  
License: CC BY 4.0 with a link back

CVE-2019-15553 · Severity: low · CVSS 3 · Published 2019-07-16

Flaw in offset_of and span_of causes SIGILL, drops uninitialized memory of arbitrary type on panic in client code

Technologies: [memoffset (crates.io)](https://junglewise.ai/threats/technologies/memoffset). Vendors: [crates.io](https://junglewise.ai/threats/vendors/crates-io).

## Quick answers

**Is CVE-2019-15553 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2019-15553 being exploited in the wild.

**How severe is CVE-2019-15553?** Low severity, with a CVSS score of 3, published 16 July 2019.

**Which products and versions are affected?** memoffset (crates.io) SEMVER:introduced=0,fixed=0.5.0, SEMVER:introduced=0.0.0-0,fixed=0.5.0.

**Is there a fix for CVE-2019-15553?** Yes. memoffset (crates.io): upgrade to 0.5.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2019-15553?** Check whether you run memoffset (crates.io) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- memoffset (crates.io): upgrade to 0.5.0 or later

  ```sh
  cargo update -p memoffset
  ```


## Affected products

- memoffset (crates.io) SEMVER:introduced=0,fixed=0.5.0, SEMVER:introduced=0.0.0-0,fixed=0.5.0

## Identifiers

- CVE-2019-15553
- GHSA-rh89-x75f-rh3c
- RUSTSEC-2019-0011

## Related threats

- [memoffset allows reading uninitialized memory](https://junglewise.ai/threats/memoffset-allows-reading-uninitialized-memory-616d9d9a)
- [RUSTSEC-2023-0045 - memoffset allows reading uninitialized memory](https://junglewise.ai/threats/rustsec-2023-0045-memoffset-allows-reading-uninitialized-memory-82a26218)