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Ubuntu 16.04 LTS: USN-3813-1 Critical: pyOpenSSL Memory Issues

ubuntu
Calendar Grey November 8, 2018
Dist Ubuntu Esm H88
Several vulnerabilities addressed in pyOpenSSL impacting Ubuntu 16.04 LTS. Important patches released for mitigation.
Several security issues were fixed in pyOpenSSL.

Summary

Several security issues were fixed in pyOpenSSL.

Software Description:

- pyopenssl: Python wrapper around the OpenSSL library

Details:

It was discovered that pyOpenSSL incorrectly handled memory when handling

X509 objects. A remote attacker could use this issue to cause pyOpenSSL to

crash, resulting in a denial of service, or possibly execute arbitrary

code. (CVE-2018-1000807)

It was discovered that pyOpenSSL incorrectly handled memory when performing

operations on a PKCS #12 store. A remote attacker could possibly use this

issue to cause pyOpenSSL to consume resources, resulting in a denial of

service. (CVE-2018-1000808)

Topics%20covered

Topics Covered

security advisory denial of service memory issue ubuntu pyopenssl

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS:
  python-openssl                  0.15.1-2ubuntu0.2
  python3-openssl                 0.15.1-2ubuntu0.2

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-3813-1

CVE-2018-1000807, CVE-2018-1000808

Severity
critical
Lowest
Low
Medium
High
Critical

November 08, 2018

Topics%20covered

Topics Covered

security advisory denial of service memory issue ubuntu pyopenssl

Package Information

https://launchpad.net/ubuntu/+source/pyopenssl/0.15.1-2ubuntu0.2

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