USN-3621-1: Ruby vulnerabilities

Details

It was discovered that Ruby incorrectly handled certain inputs. An attacker
could possibly use this to access sensitive information. (CVE-2018-1000073)

It was discovered that Ruby incorrectly handled certain files. An attacker
could possibly use this to execute arbitrary code. (CVE-2018-1000074)

It was discovered that Ruby incorrectly handled certain files. An attacker
could possibly use this to cause a denial of service. (CVE-2018-1000075)

It was discovered that Ruby incorrectly handled certain crypto signatures.
An attacker could possibly use this to execute arbitrary code. (CVE-2018-1000076)

It was discovered that Ruby incorrectly handled certain inputs. An attacker
could possibly use this to execute arbitrary code. (CVE-2018-1000077,
CVE-2018-1000078, CVE-2018-1000079)

Update instructions

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

Ubuntu 17.10

• libruby2.3 - 2.3.3-1ubuntu1.4
• ruby2.3 - 2.3.3-1ubuntu1.4

Ubuntu 16.04

• libruby2.3 - 2.3.1-2~16.04.7
• ruby2.3 - 2.3.1-2~16.04.7

Ubuntu 14.04

• libruby1.9.1 - 1.9.3.484-2ubuntu1.8
• libruby2.0 - 2.0.0.484-1ubuntu2.6
• ruby1.9.1 - 1.9.3.484-2ubuntu1.8
• ruby1.9.3 - 1.9.3.484-2ubuntu1.8
• ruby2.0 - 2.0.0.484-1ubuntu2.6

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

References

• CVE-2018-1000073
• CVE-2018-1000074
• CVE-2018-1000075
• CVE-2018-1000076
• CVE-2018-1000077
• CVE-2018-1000078
• CVE-2018-1000079

Related notices

• USN-3685-1: libruby2.0, ruby1.9.1, libruby1.9.1, ruby1.9.3, libruby2.3, ruby2.3, ruby2.0
• USN-3621-2: libruby2.0, ruby1.9.1, libruby1.9.1, ruby1.9.3, ruby2.0