---
title: "CVE-2017-5977\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-2017-5977?format=md
keywords: index, follow
---

# CVE-2017-5977

Publication date 1 March 2017

Last updated 25 August 2025

---

Ubuntu priority

**Low**

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

## Cvss 3 Severity Score

**5.5 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2017-5977?format=md#impact-score)

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## Description

The zzip\_mem\_entry\_extra\_block function in memdisk.c in zziplib 0.13.62
allows remote attackers to cause a denial of service (invalid memory read
and crash) via a crafted ZIP file.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2017-5977?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| zziplib | 18.04 LTS bionic | Fixed 0.13.62-3ubuntu0.17.04.1 |
| 17.10 artful | Fixed 0.13.62-3ubuntu0.17.04.1 |
| 17.04 zesty | Ignored end of life |
| 16.10 yakkety | Ignored end of life |
| 16.04 LTS xenial | Fixed 0.13.62-3ubuntu0.16.04.1 |
| 14.04 LTS trusty | Fixed 0.13.62-2ubuntu0.1 |
| 12.04 LTS precise | Ignored end of life |

---

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

## Notes

---

### [mdeslaur](https://launchpad.net/~mdeslaur)

can't reproduce, fixed by earlier CVE fixes

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.5 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.5 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5977)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-5977)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-5977)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-5977)

### Other references

* <http://blogs.gentoo.org/ago/2017/02/09/zziplib-invalid-memory-read-in-zzip_mem_entry_extra_block-memdisk-c/>
* <https://www.cve.org/CVERecord?id=CVE-2017-5977>