[Secure-testing-team] Bug#875936: ruby2.3: CVE-2017-0898: Buffer underrun vulnerability in Kernel.sprintf

[Salvatore Bonaccorso]

Source: ruby2.3
Version: 2.3.3-1
Severity: important
Tags: security upstream

Hi,

the following vulnerability was published for ruby2.3.

CVE-2017-0898[0]:
| Ruby before 2.4.2, 2.3.5, and 2.2.8 is vulnerable to a leakage of its
| heap by the malicious specification of the format of sprintf method.
| If a script allows to accept any format from the outside, there is a
| risk to be spied the contents of the heap.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2017-0898
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0898
[1] https://www.ruby-lang.org/en/news/2017/09/14/sprintf-buffer-underrun-cve-2017-0898/

Regards,
Salvatore