---
title: "CVE-2017-9434\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2017-9434?format=md
keywords: index, follow
---

# CVE-2017-9434

Publication date 5 June 2017

Last updated 25 August 2025

---

Ubuntu priority

**Low**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.3 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2017-9434?format=md#impact-score)

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## Description

Crypto++ (aka cryptopp) through 5.6.5 contains an out-of-bounds read
vulnerability in zinflate.cpp in the Inflator filter.

### From the Ubuntu Security Team

It was discovered that Crypto++ mishandled certain input. An attacker could use
this vulnerability to leak potentially sensitive information.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| libcrypto++ | 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Not affected |
| 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Ignored end of life |
| 17.04 zesty | Ignored end of life |
| 16.10 yakkety | Ignored end of life |
| 16.04 LTS xenial | Fixed 5.6.1-9ubuntu0.1+esm1  Ubuntu Pro |
| 14.04 LTS trusty | Fixed 5.6.1-6+deb8u3ubuntu0.1~esm1  Ubuntu Pro |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

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## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.3 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | Low |
  | Integrity impact | None |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.3 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9434)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-9434)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-9434)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-9434)

### Related Ubuntu Security Notices (USN)

+ [USN-4827-1](https://usn.ubuntu.com/USN-4827-1)
+ Crypto++ vulnerability
+ 15 March 2021

### Other references

* <https://github.com/weidai11/cryptopp/issues/414>
* <https://github.com/weidai11/cryptopp/commit/07dbcc3d9644b18e05c1776db2a57fe04d780965>
* <https://www.cve.org/CVERecord?id=CVE-2017-9434>