---
title: "CVE-2015-0291\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-2015-0291?format=md
keywords: index, follow
---

# CVE-2015-0291

Publication date 19 March 2015

Last updated 24 July 2024

---

Ubuntu priority

**High**

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

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## Description

The sigalgs implementation in t1\_lib.c in OpenSSL 1.0.2 before 1.0.2a
allows remote attackers to cause a denial of service (NULL pointer
dereference and daemon crash) by using an invalid signature\_algorithms
extension in the ClientHello message during a renegotiation.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2015-0291?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| openssl | 14.10 utopic | Not affected |
| 14.04 LTS trusty | Not affected |
| 12.04 LTS precise | Not affected |
| 10.04 LTS lucid | Not affected |
| openssl098 | 14.10 utopic | Not affected |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Not affected |
| 10.04 LTS lucid | Not in release |

---

* [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)

1.0.2 only

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0291)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2015-0291)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2015-0291)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2015-0291)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2015-0291>