Use of Externally-Controlled Format String Affecting ruby2.3 package, versions <2.3.1-2~16.04.10
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published15 Sept 2017
- disclosed15 Sept 2017
Introduced: 15 Sep 2017
CVE-2017-0898 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.04 ruby2.3 to version 2.3.1-2~16.04.10 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ruby2.3 package and not the ruby2.3 package as distributed by Ubuntu.
See How to fix? for Ubuntu:16.04 relevant fixed versions and status.
Ruby before 2.4.2, 2.3.5, and 2.2.8 is vulnerable to a malicious format string which contains a precious specifier (*) with a huge minus value. Such situation can lead to a buffer overrun, resulting in a heap memory corruption or an information disclosure from the heap.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-0898
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0898
- https://www.debian.org/security/2017/dsa-4031
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
- https://security-tracker.debian.org/tracker/CVE-2017-0898
- https://security.gentoo.org/glsa/201710-18
- https://github.com/mruby/mruby/issues/3722
- https://hackerone.com/reports/212241
- https://www.ruby-lang.org/en/news/2017/09/14/sprintf-buffer-underrun-cve-2017-0898/
- https://access.redhat.com/errata/RHSA-2017:3485
- https://access.redhat.com/errata/RHSA-2018:0378
- https://access.redhat.com/errata/RHSA-2018:0583
- https://access.redhat.com/errata/RHSA-2018:0585
- http://www.securityfocus.com/bid/100862
- http://www.securitytracker.com/id/1039363
- https://usn.ubuntu.com/3685-1/