Vulnerabilities in pkg:pypi/capstone

PACKAGE
Advisory Identifier: GHSA-xx4j-rvcc-2vhr
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Advisory Summary

CVE-2016-7151 is a MODERATE (CVSS 5.5) capstone segv caused by a vulnerability (CWE-125: Out-of-bounds Read) affecting Capstone libraries in the PyPI ecosystem. The issue involves capstone segv caused by a read memory access. Remediation is available by upgrading affected packages to version 4.0.0.

2 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:pypi/capstone

2 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:pypi/capstone. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-xx4j-rvcc-2vhr CVE-2016-7151 MODERATE Capstone SEGV caused by a read memory access
GHSA-3v99-hpv7-9hh9 CVE-2017-6952 HIGH Capstone Integer overflow

CVE-2016-7151 at a Glance

CVE Identifier CVE-2016-7151
GHSA Identifier GHSA-xx4j-rvcc-2vhr
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-125: Out-of-bounds Read
Affected Product Capstone
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 5.5

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

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

How to Fix CVE-2016-7151

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

capstone fixed: 4.0.0 
pip install capstone>=4.0.0
Verify Direct and Transitive Dependencies

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

pip show capstone

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2016-7151, inspect your installed packages using pip:

pip show capstone

Analyze the terminal output to locate any version of Capstone in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.0.0), your application is affected.

Note: The pip show capstone command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-125: Out-of-bounds Read, where the product reads data past the end, or before the beginning, of the intended buffer. In Capstone, 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

Capstone 3.0.4 has an out-of-bounds vulnerability (SEGV caused by a read memory access) in X86_insn_reg_intel in arch/X86/X86Mapping.c.

CVE-2016-7151 Affected Capstone Versions

1 component(s)
Fixed Versions:
4.0.0
Product / Package Ecosystem Affected Versions Fixed Version
capstone
pypi/capstone
PyPI
< 4.0.0
4.0.0

References

NVD — CVE-2016-7151 NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-7151
Capstone Source Repository REPOSITORY
https://github.com/aquynh/capstone/pull/725
Security Fix Commit FIX COMMIT
https://github.com/aquynh/capstone/commit/87a25bb543c8e4c09b48d4b4a6c7db31ce58df06
Capstone Source Repository REPOSITORY
https://github.com/capstone-engine/capstone
Capstone Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/capstone/PYSEC-2019-242.yaml

Frequently Asked Questions

What is CVE-2016-7151?
CVE-2016-7151 is a security vulnerability in Capstone involving Capstone SEGV caused by a read memory access under CWE-125: Out-of-bounds Read.
Which Capstone versions are affected?
Affected versions include releases prior to 4.0.0 across affected packages: capstone.
What version fixes CVE-2016-7151?
Upgrading to 4.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is capstone affected?
Yes, capstone is affected in releases prior to 4.0.0. Upgrade your dependency to 4.0.0 or later.
What is the CVSS score of CVE-2016-7151?
CVE-2016-7151 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2016-7151?
CVE-2016-7151 is classified under CWE-125: Out-of-bounds Read (The product reads data past the end, or before the beginning, of the intended buffer.).
How can I check PyPI dependencies for CVE-2016-7151?
Run the dependency tree command: 'pip show capstone'. 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-xx4j-rvcc-2vhr",
  "modified" : "2026-06-10T18:43:14Z",
  "published" : "2022-05-24T16:45:42Z",
  "aliases" : [ "CVE-2016-7151" ],
  "summary" : "Capstone SEGV caused by a read memory access",
  "details" : "Capstone 3.0.4 has an out-of-bounds vulnerability (SEGV caused by a read memory access) in X86_insn_reg_intel in arch/X86/X86Mapping.c.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "capstone"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2016-7151"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/aquynh/capstone/pull/725"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/aquynh/capstone/commit/87a25bb543c8e4c09b48d4b4a6c7db31ce58df06"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/capstone-engine/capstone"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/capstone/PYSEC-2019-242.yaml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-125" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-11-21T22:19:31Z",
    "nvd_published_at" : "2019-05-15T14:29:00Z"
  }
}