High severity · published May 24, 2017
CVE-2017-9229
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
7.5
CVSS
5.1%
EPSS
No
On KEV
Description
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 SIGSEGV occurs in left_adjust_char_head() during regular expression compilation. Invalid handling of reg->dmax in forward_search_range() could result in an invalid pointer dereference, normally as an immediate denial-of-service condition.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.1% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PH
PHP · PHP
through 7.1.5; 5.6.0 before 5.6.31; 7.0.0 before 7.0.21; 7.1.0 before 7.1.7 · source: NVD
ON
Oniguruma · Oniguruma Project
6.2.0 · source: NVD
RU
Ruby · Ruby-lang
through 2.4.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-9229
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-9229
Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1296
Patch
https://github.com/kkos/oniguruma/commit/b690371bbf97794b4a1d3f295d4fb9a8b05d402d
Exploit
https://github.com/kkos/oniguruma/issues/59
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