CVE-2017-0898

CRITICAL

Ruby <2.4.2, 2.3.5, 2.2.8 - Buffer Overflow/Info Disclosure

Title source: llm

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.

References (13)

[Vendor Advisory] https://usn.ubuntu.com/3685-1/

[Exploit, Third Party Advisory] https://hackerone.com/reports/212241

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2018:0585

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2018:0378

[Third Party Advisory] https://www.debian.org/security/2017/dsa-4031

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/100862

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1039363

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2017:3485

[Mailing List] https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2018:0583

[Exploit, Third Party Advisory] https://github.com/mruby/mruby/issues/3722

[Vendor Advisory] https://www.ruby-lang.org/en/news/2017/09/14/sprintf-buffer-underrun-cve-2017-0898/

[Third Party Advisory] https://security.gentoo.org/glsa/201710-18

Scores

CVSS v3 9.1

EPSS 0.0081

EPSS Percentile 74.2%

Attack Vector NETWORK

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

Details

CWE

CWE-134

Status published

Products (16)

HackerOne/Ruby Versions before 2.4.2, 2.3.5, and 2.2.8

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

... and 6 more

Published Sep 15, 2017

Tracked Since Feb 18, 2026