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Ubuntu 22.04: USN-5488-1 Moderate OpenSSL c_rehash Local Attack

ubuntu
Calendar Grey June 21, 2022
Dist Ubuntu Esm H88
Ubuntu has issued critical advisories about a newly found OpenSSL vulnerability affecting multiple versions, urging users to act quickly to secure their systems
OpenSSL could be made to crash or run programs when the c_rehash script is used.

Summary

OpenSSL could be made to crash or run programs when the c_rehash script is

used.

Software Description:

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

- openssl1.0: Secure Socket Layer (SSL) cryptographic library and tools

Details:

Chancen and Daniel Fiala 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.

Topics%20covered

Topics Covered

security advisory moderate Ubuntu OpenSSL local threat c_rehash

Update Instructions

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

Ubuntu 22.04 LTS:
  openssl                         3.0.2-0ubuntu1.5

Ubuntu 21.10:
  openssl                         1.1.1l-1ubuntu1.5

Ubuntu 20.04 LTS:
  openssl                         1.1.1f-1ubuntu2.15

Ubuntu 18.04 LTS:
  openssl                         1.1.1-1ubuntu2.1~18.04.19
  openssl1.0                      1.0.2n-1ubuntu5.10

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

References

https://ubuntu.com/security/notices/USN-5488-1

CVE-2022-2068

Severity
important
Lowest
Low
Medium
High
Critical

June 21, 2022

Topics%20covered

Topics Covered

security advisory moderate Ubuntu OpenSSL local threat c_rehash

Package Information

https://launchpad.net/ubuntu/+source/openssl/1.1.1l-1ubuntu1.5
https://launchpad.net/ubuntu/+source/openssl/1.1.1f-1ubuntu2.15
https://launchpad.net/ubuntu/+source/openssl/1.1.1-1ubuntu2.1~18.04.19

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