Out-of-bounds Read in Oniguruma_project Oniguruma

CVE-2017-9227

An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds read occurs in mbc_enc_len() during regular expression searching. Invalid handling of reg->…

Vulnerability class: Buffer Overflow

EPSS: 0.005 (64.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
  • cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
  • cve@mitre.org (x_refsource_CONFIRM, Exploit, Patch, Third Party Advisory, Issue Tracking)
  • cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2017-9227?
CVE-2017-9227 is a critical-severity vulnerability in Oniguruma_project Oniguruma, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2017-05-24.
How severe is CVE-2017-9227?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2017-9227 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.