Vulnerability in HackerOne Ruby
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 · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.097 (95.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.097 · newest: 0.097 · change: 0.000
Affected products
- HackerOne Ruby — versions Versions before 2.4.2, 2.3.5, and 2.2.8
- Ruby-Lang Ruby — versions 2.2.0, 2.2.1, 2.2.2
Weakness classification (CWE)
References
- usn.ubuntu.com/3685-1/ (vendor-advisory)
- hackerone.com/reports/212241 (Exploit, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:0585 (vendor-advisory)
- access.redhat.com/errata/RHSA-2018:0378 (vendor-advisory)
- www.debian.org/security/2017/dsa-4031 (vendor-advisory)
- www.securityfocus.com/bid/100862 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1039363 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2017:3485 (vendor-advisory)
- lists.debian.org/debian-lts-announce/2018/07/msg00012.html (mailing-list)
- access.redhat.com/errata/RHSA-2018:0583 (vendor-advisory)
Frequently asked questions
- What is CVE-2017-0898?
- CVE-2017-0898 is a critical-severity vulnerability in HackerOne Ruby, classified under Use of Externally-Controlled Format String. CVSS score: 9.1/10. Published 2017-09-15.
- How severe is CVE-2017-0898?
- Critical severity. CVSS v3 base score is 9.1 out of 10.