VulnerabilityModified
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.
CRITICAL 9.1EPSS 9.72%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (9.72%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 9.1 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 9.72% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-134
- Affected
- ruby-lang/ruby
- Source
- support@hackerone.com
References
- http://www.securityfocus.com/bid/100862Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039363Third Party Advisory, VDB Entry
- 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/3722Exploit, Third Party Advisory
- https://hackerone.com/reports/212241Exploit, Third Party Advisory
- 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/Vendor Advisory
- http://www.securityfocus.com/bid/100862Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039363Third Party Advisory, VDB Entry
- 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/3722Exploit, Third Party Advisory
- https://hackerone.com/reports/212241Exploit, Third Party Advisory
- 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/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.