Vulnerability Report

CVE-2017-0898

Title: Ruby-Lang Ruby Memory Corruption

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2017-0898.

CWE Category CWE-134

Published Date Sep 15, 2017

Modified Date May 13, 2026

Exploit Status Not Found

Score 9.1 CVSS v3.0

Exploit Probability (EPSS)

1.40%

Vulnerability Summary

CVE-2017-0898: 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.

Impacted Vendors

ruby-lang 1

yukihiro_matsumoto 1

Reference Links

http://www.securityfocus.com/bid/100862 http://www.securitytracker.com/id/1039363 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/3722 https://hackerone.com/reports/212241 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/ http://www.securityfocus.com/bid/100862 http://www.securitytracker.com/id/1039363 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/3722 https://hackerone.com/reports/212241 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/

CVSS v3.0

Source Entity [email protected]

Severity CRITICAL

9.1

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

6.4

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:P/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns