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    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.

    Published:Sep 14, 2017
    Last Modified:Apr 20, 2025
    EPS:Sep 15, 2017
    EPSS Score:0.0081
    CVSS Score:9.1

    Affected Products

    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Software Collections
    Vendor
    Ruby-lang
    Product
    Ruby

    Exploits

    https://github.com/mruby/mruby/issues/3722https://hackerone.com/reports/212241https://github.com/mruby/mruby/issues/3722https://hackerone.com/reports/212241

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    References

    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/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High