USN-5402-1: OpenSSL vulnerabilities

Releases

• Ubuntu 22.04 LTS
• Ubuntu 21.10
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

Packages

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

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)

Raul Metsma discovered that OpenSSL incorrectly verified certain response
signing certificates. A remote attacker could possibly use this issue to
spoof certain response signing certificates. This issue only affected
Ubuntu 22.04 LTS. (CVE-2022-1343)

Tom Colley discovered that OpenSSL used the incorrect MAC key in the
RC4-MD5 ciphersuite. In non-default configurations were RC4-MD5 is enabled,
a remote attacker could possibly use this issue to modify encrypted
communications. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-1434)

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 22.04

• libssl3 - 3.0.2-0ubuntu1.1

Ubuntu 21.10

• libssl1.1 - 1.1.1l-1ubuntu1.3

Ubuntu 20.04

• libssl1.1 - 1.1.1f-1ubuntu2.13

Ubuntu 18.04

• libssl1.0.0 - 1.0.2n-1ubuntu5.9
• libssl1.1 - 1.1.1-1ubuntu2.1~18.04.17

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

References

• CVE-2022-1343
• CVE-2022-1292
• CVE-2022-1434
• CVE-2022-1473

Related notices

• USN-5402-2
• USN-6457-1
• USN-7018-1
• USN-7060-1