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Ubuntu 11.10: USN-1424-1 Moderate OpenSSL Denial Of Service Attack

Ubuntu Large Esm H500
An application using OpenSSL could be made to crash or run programs if it opened a specially crafted file.
=========================================================================Ubuntu Security Notice USN-1424-1
April 19, 2012

openssl vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

An application using OpenSSL could be made to crash or run programs if it
opened a specially crafted file.

Software Description:
- openssl: Secure Socket Layer (SSL) cryptographic library and tools

Details:

It was discovered that OpenSSL could be made to dereference a NULL pointer
when processing S/MIME messages. A remote attacker could use this to cause
a denial of service. These issues did not affect Ubuntu 8.04 LTS.
(CVE-2006-7250, CVE-2012-1165)

Tavis Ormandy discovered that OpenSSL did not properly perform bounds
checking when processing DER data via BIO or FILE functions. A remote
attacker could trigger this flaw in services that used SSL to cause a
denial of service or possibly execute arbitrary code with application
privileges. (CVE-2012-2110)

Update instructions:

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

Ubuntu 11.10:
  libssl1.0.0                     1.0.0e-2ubuntu4.4

Ubuntu 11.04:
  libssl0.9.8                     0.9.8o-5ubuntu1.4

Ubuntu 10.04 LTS:
  libssl0.9.8                     0.9.8k-7ubuntu8.10

Ubuntu 8.04 LTS:
  libssl0.9.8                     0.9.8g-4ubuntu3.17

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-1424-1
  CVE-2006-7250, CVE-2012-1165, CVE-2012-2110

Package Information:
  https://launchpad.net/ubuntu/+source/openssl/1.0.0e-2ubuntu4.4
  https://launchpad.net/ubuntu/+source/openssl/0.9.8o-5ubuntu1.4
  https://launchpad.net/ubuntu/+source/openssl/0.9.8k-7ubuntu8.10
  https://launchpad.net/ubuntu/+source/openssl/0.9.8g-4ubuntu3.17


Ubuntu 11.10: USN-1424-1 Moderate OpenSSL Denial Of Service Attack

ubuntu
Calendar Grey April 19, 2012
Dist Ubuntu Esm H88
The recent Ubuntu 1424-1 announcement emphasizes critical OpenSSL vulnerabilities and patches applicable across various configurations. Remain vigilant against potential remote exploitation.
An application using OpenSSL could be made to crash or run programs if it opened a specially crafted file.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 11.10: libssl1.0.0 1.0.0e-2ubuntu4.4 Ubuntu 11.04: libssl0.9.8 0.9.8o-5ubuntu1.4 Ubuntu 10.04 LTS: libssl0.9.8 0.9.8k-7ubuntu8.10 Ubuntu 8.04 LTS: libssl0.9.8 0.9.8g-4ubuntu3.17 After a standard system update you need to reboot your computer to make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-1424-1

CVE-2006-7250, CVE-2012-1165, CVE-2012-2110

Severity
important
Lowest
Low
Medium
High
Critical

April 19, 2012

Package Information

https://launchpad.net/ubuntu/+source/openssl/1.0.0e-2ubuntu4.4 https://launchpad.net/ubuntu/+source/openssl/0.9.8o-5ubuntu1.4 https://launchpad.net/ubuntu/+source/openssl/0.9.8k-7ubuntu8.10 https://launchpad.net/ubuntu/+source/openssl/0.9.8g-4ubuntu3.17

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