Buffer overflow in Ruby-Lang Ruby
CVE-2017-14064
Ruby through 2.2.7, 2.3.x through 2.3.4, and 2.4.x through 2.4.1 can expose arbitrary memory during a JSON.generate call. The issues lies in using strdup in ext/json/ext/generator/generator.c, which will stop after encountering a '\0' byte, returning a pointer to a string of length zero, which is not the length stored in space_len.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.094 (95.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.094 · newest: 0.094 · change: 0.000
Affected products
- Ruby-Lang Ruby — versions 2.3.0, 2.3.1, 2.3.2
- Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10
- Debian Linux — versions 8.0, 9.0
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Server Aus — versions 7.4, 7.6
- Red Hat Enterprise Linux Server Eus — versions 7.4, 7.5, 7.6
- Red Hat Enterprise Linux Server Tus — versions 7.4, 7.6
- Red Hat Enterprise Linux Workstation — versions 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- usn.ubuntu.com/3685-1/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:0585 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2017/dsa-3966 (vendor-advisory, Third Party Advisory)
- www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/ (Vendor Advisory)
- access.redhat.com/errata/RHSA-2018:0378 (vendor-advisory, Third Party Advisory)
- hackerone.com/reports/209949 (Exploit, Third Party Advisory)
- www.securitytracker.com/id/1042004 (VDB Entry, Third Party Advisory, vdb-entry)
- www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/ (Vendor Advisory)
- www.securitytracker.com/id/1039363 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2017:3485 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-14064?
- CVE-2017-14064 is a critical-severity vulnerability in Ruby-Lang Ruby, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-08-31.
- How severe is CVE-2017-14064?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-14064 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.