CVE-2019-15553: Memoffset Exposure Of Uninitialized Memory Vulnerability

HIGH
Advisory Identifier: GHSA-rh89-x75f-rh3c
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CVSS 7.5
CWE-908
Published
Advisory Summary

CVE-2019-15553 is a HIGH (CVSS 7.5) exposure of uninitialized memory vulnerability (CWE-908: Use of Uninitialized Resource) affecting Memoffset libraries in the crates.io ecosystem. The issue involves exposure of uninitialized memory in memoffset. Remediation is available by upgrading affected packages to version 0.5.0.

CVE-2019-15553 at a Glance

CVE Identifier CVE-2019-15553
GHSA Identifier GHSA-rh89-x75f-rh3c
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-908: Use of Uninitialized Resource
Affected Product Memoffset
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2019-15553

To remediate this vulnerability, upgrade all affected Memoffset dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

memoffset fixed: 0.5.0 
Upgrade memoffset to 0.5.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for memoffset

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-15553, inspect your project dependencies for Memoffset:

inspect dependencies for memoffset

Analyze the terminal output to locate any version of Memoffset in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.5.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-908: Use of Uninitialized Resource, where the product uses or accesses a resource that has not been initialized. In Memoffset, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Affected versions of this crate caused traps and/or memory unsafety by zero-initializing references. They also could lead to uninitialized memory being dropped if the field for which the offset is requested was behind a deref coercion, and that deref coercion caused a panic. The flaw was corrected by using MaybeUninit.

CVE-2019-15553 Affected Memoffset Versions

1 component(s)
Fixed Versions:
0.5.0
Product / Package Ecosystem Affected Versions Fixed Version
memoffset
 crates.io
< 0.5.0
0.5.0

References

NVD — CVE-2019-15553 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-15553
Memoffset Source Repository REPOSITORY
https://github.com/Gilnaa/memoffset/issues/9#issuecomment-505461490
Memoffset Source Repository REPOSITORY
https://github.com/Gilnaa/memoffset
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2019-0011.html

Frequently Asked Questions

What is CVE-2019-15553?
CVE-2019-15553 is a security vulnerability in Memoffset involving Exposure of uninitialized memory in memoffset under CWE-908: Use of Uninitialized Resource.
Which Memoffset versions are affected?
Affected versions include releases prior to 0.5.0 across affected packages: memoffset.
What version fixes CVE-2019-15553?
Upgrading to 0.5.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is memoffset affected?
Yes, memoffset is affected in releases prior to 0.5.0. Upgrade your dependency to 0.5.0 or later.
What is the CVSS score of CVE-2019-15553?
CVE-2019-15553 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2019-15553?
CVE-2019-15553 is classified under CWE-908: Use of Uninitialized Resource (The product uses or accesses a resource that has not been initialized.).
How can I check crates.io dependencies for CVE-2019-15553?
Run the dependency tree command: 'inspect dependencies for memoffset'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-rh89-x75f-rh3c",
  "modified" : "2023-06-13T18:43:22Z",
  "published" : "2021-08-25T20:44:00Z",
  "aliases" : [ "CVE-2019-15553" ],
  "summary" : "Exposure of uninitialized memory in memoffset",
  "details" : "Affected versions of this crate caused traps and/or memory unsafety by zero-initializing references. They also could lead to uninitialized memory being dropped if the field for which the offset is requested was behind a deref coercion, and that deref coercion caused a panic. The flaw was corrected by using MaybeUninit.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "memoffset"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.5.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-15553"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Gilnaa/memoffset/issues/9#issuecomment-505461490"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Gilnaa/memoffset"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2019-0011.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-908" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T21:23:41Z",
    "nvd_published_at" : null
  }
}