CVE-2019-16140: Chttp Use-after-free Vulnerability

CRITICAL
Advisory Identifier: GHSA-5rrv-m36h-qwf8
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CVSS 9.8
CWE-416
Published
Advisory Summary

CVE-2019-16140 is a CRITICAL (CVSS 9.8) use-after-free vulnerability (CWE-416: Use After Free) affecting Chttp libraries in the crates.io ecosystem. The issue involves use-after-free in chttp. Remediation is available by upgrading affected packages to version 0.1.3.

CVE-2019-16140 at a Glance

CVE Identifier CVE-2019-16140
GHSA Identifier GHSA-5rrv-m36h-qwf8
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-416: Use After Free
Affected Product Chttp
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

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 High (I:H)
Availability High (A:H)

How to Fix CVE-2019-16140

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

chttp fixed: 0.1.3 
Upgrade chttp to 0.1.3
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 chttp

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-16140, inspect your project dependencies for Chttp:

inspect dependencies for chttp

Analyze the terminal output to locate any version of Chttp in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.1.3), 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-416: Use After Free, where the product reuses or references memory after it has been freed. at some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. In Chttp, 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

The From implementation for Vec was not properly implemented, returning a vector backed by freed memory. This could lead to memory corruption or be exploited to cause undefined behavior. A fix was published in version 0.1.3.

CVE-2019-16140 Affected Chttp Versions

1 component(s)
Fixed Versions:
0.1.3
Product / Package Ecosystem Affected Versions Fixed Version
chttp
 crates.io
≥ 0.1.1
< 0.1.3
0.1.3

References

NVD — CVE-2019-16140 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-16140
Chttp Source Repository REPOSITORY
https://github.com/sagebind/isahc/issues/2
Security Fix Commit FIX COMMIT
https://github.com/sagebind/isahc/commit/9e9f1fb44114078c000c78c72e691eeb9e7ac260
Chttp Source Repository REPOSITORY
https://github.com/sagebind/chttp
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2019-0016.html

Frequently Asked Questions

What is CVE-2019-16140?
CVE-2019-16140 is a security vulnerability in Chttp involving Use-after-free in chttp under CWE-416: Use After Free.
Which Chttp versions are affected?
Affected versions include releases prior to 0.1.3 across affected packages: chttp.
What version fixes CVE-2019-16140?
Upgrading to 0.1.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is chttp affected?
Yes, chttp is affected in releases prior to 0.1.3. Upgrade your dependency to 0.1.3 or later.
What is the CVSS score of CVE-2019-16140?
CVE-2019-16140 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2019-16140?
CVE-2019-16140 is classified under CWE-416: Use After Free (The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.).
How can I check crates.io dependencies for CVE-2019-16140?
Run the dependency tree command: 'inspect dependencies for chttp'. 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-5rrv-m36h-qwf8",
  "modified" : "2023-06-13T16:55:57Z",
  "published" : "2021-08-25T20:44:40Z",
  "aliases" : [ "CVE-2019-16140" ],
  "summary" : "Use-after-free in chttp",
  "details" : "The From implementation for Vec was not properly implemented, returning a vector backed by freed memory. This could lead to memory corruption or be exploited to cause undefined behavior.\n\nA fix was published in version 0.1.3.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "chttp"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.1.1"
      }, {
        "fixed" : "0.1.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-16140"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sagebind/isahc/issues/2"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sagebind/isahc/commit/9e9f1fb44114078c000c78c72e691eeb9e7ac260"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/sagebind/chttp"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2019-0016.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-416" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T21:22:50Z",
    "nvd_published_at" : "2019-09-09T12:15:10Z"
  }
}