---
title: "CVE-2013-4577\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-2013-4577?format=md
keywords: index, follow
---

# CVE-2013-4577

Publication date 12 May 2014

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

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## Description

A certain Debian patch for GNU GRUB uses world-readable permissions for
grub.cfg, which allows local users to obtain password hashes, as
demonstrated by reading the password\_pbkdf2 directive in the file.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| grub2 | 21.04 hirsute | Fixed 2.00-20 |
| 20.10 groovy | Fixed 2.00-20 |
| 20.04 LTS focal | Fixed 2.00-20 |
| 19.10 eoan | Fixed 2.00-20 |
| 19.04 disco | Fixed 2.00-20 |
| 18.10 cosmic | Fixed 2.00-20 |
| 18.04 LTS bionic | Fixed 2.00-20 |
| 17.10 artful | Fixed 2.00-20 |
| 17.04 zesty | Fixed 2.00-20 |
| 16.10 yakkety | Fixed 2.00-20 |
| 16.04 LTS xenial | Fixed 2.00-20 |
| 15.10 wily | Fixed 2.00-20 |
| 15.04 vivid | Fixed 2.00-20 |
| 14.10 utopic | Fixed 2.00-20 |
| 14.04 LTS trusty | Fixed 2.00-20 |
| 13.10 saucy | Ignored end of life |
| 13.04 raring | Ignored end of life |
| 12.10 quantal | Ignored end of life |
| 12.04 LTS precise | Ignored end of life |
| 10.04 LTS lucid | 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)
* [Patch details](https://ubuntu.com/security/CVE-2013-4577?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| grub2 | * Other:   <http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=5;filename=safer_grub_cfg_perms.diff.gz;att=1;bug=632598> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4577)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2013-4577)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2013-4577)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2013-4577)

### Other references

* <http://www.openwall.com/lists/oss-security/2013/11/14>
* <https://www.cve.org/CVERecord?id=CVE-2013-4577>