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==========================================================================
Ubuntu Security Notice USN-5402-2
May 26, 2022

openssl vulnerabilities
==========================================================================

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

- Ubuntu 16.04 ESM

Summary:

Several security issues were fixed in OpenSSL.

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

Details:

USN-5402-1 fixed several vulnerabilities in OpenSSL. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

 Elison Niven discovered that OpenSSL incorrectly handled the c_rehash
 script. A local attacker could possibly use this issue to execute arbitrary
 commands when c_rehash is run. (CVE-2022-1292)
 
 Aliaksei Levin discovered that OpenSSL incorrectly handled resources when
 decoding certificates and keys. A remote attacker could possibly use this
 issue to cause OpenSSL to consume resources, leading to a denial of
 service. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-1473)

Update instructions:

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

Ubuntu 16.04 ESM:
  libssl1.0.0                     1.0.2g-1ubuntu4.20+esm3

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

References:
  https://ubuntu.com/security/notices/USN-5402-2
  https://ubuntu.com/security/notices/USN-5402-1
  CVE-2022-1292, CVE-2022-1473

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