CVE-2017-0898

Name: CVE-2017-0898
Creator: NVD / NIST
Published: 2017-09-15T19:29:00.19+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 9.72%

Last modified Jun 17, 2026

CVE-2017-0898 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 9.72% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

9.72%

94.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Ruby-Lang	Ruby	2.2.0
Ruby-Lang	Ruby	2.2.1
Ruby-Lang	Ruby	2.2.2
Ruby-Lang	Ruby	2.2.3
Ruby-Lang	Ruby	2.2.4
Ruby-Lang	Ruby	2.2.5
Ruby-Lang	Ruby	2.2.6
Ruby-Lang	Ruby	2.2.7
Ruby-Lang	Ruby	2.3.0
Ruby-Lang	Ruby	2.3.1
Ruby-Lang	Ruby	2.3.2
Ruby-Lang	Ruby	2.3.3
Ruby-Lang	Ruby	2.3.4
Ruby-Lang	Ruby	2.4.0
Ruby-Lang	Ruby	2.4.1

References

http://www.securityfocus.com/bid/100862Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039363Third Party Advisory, VDB Entry
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
https://github.com/mruby/mruby/issues/3722Exploit, Third Party Advisory
https://hackerone.com/reports/212241Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
https://security.gentoo.org/glsa/201710-18
https://usn.ubuntu.com/3685-1/
https://www.debian.org/security/2017/dsa-4031
https://www.ruby-lang.org/en/news/2017/09/14/sprintf-buffer-underrun-cve-2017-0898/Vendor Advisory
http://www.securityfocus.com/bid/100862Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039363Third Party Advisory, VDB Entry
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
https://github.com/mruby/mruby/issues/3722Exploit, Third Party Advisory
https://hackerone.com/reports/212241Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
https://security.gentoo.org/glsa/201710-18
https://usn.ubuntu.com/3685-1/
https://www.debian.org/security/2017/dsa-4031
https://www.ruby-lang.org/en/news/2017/09/14/sprintf-buffer-underrun-cve-2017-0898/Vendor Advisory

Timeline

Published: Sep 15, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-0898?

How severe is CVE-2017-0898?

Severity scoring for CVE-2017-0898 is pending analysis. The EPSS model estimates a 9.72% probability of exploitation in the next 30 days.

How do I fix CVE-2017-0898?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-0898?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST