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 write in onigenc_unicode_get_case_fold_codes_by_str() occurs during regular expression compilation. Code point 0xFFFFFFFF is not properly handled in unicode_unfold_key(). A malformed regular expression could result in 4 bytes being written off the end of a stack buffer of expand_case_fold_string() during the call to onigenc_unicode_get_case_fold_codes_by_str(), a typical stack buffer overflow.

The Rocky Linux 8.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-2026_0123 advisory.

    This advisory aggregates security fixes for the oniguruma SRPM in CIQ LTS 8.6. It addresses 11 CVEs:
    CVE-2019-19203, CVE-2019-16163, CVE-2019-19204, CVE-2017-9229, CVE-2019-13225, and 6 more.

Tenable has extracted the preceding description block directly from the CIQ security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update of the ruby package has been released.

Multiple security flaws were found on the previous version of oniguruma. This new version should fix the issue. 

Fixed CVEs: CVE-2017-9226 CVE-2017-9225 CVE-2017-9224 CVE-2017-9227 CVE-2017-9229 CVE-2017-9228

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Multiple security flaws were found on oniguruma currently being shipped on Fedora. This new rpm should fix the issue. 

Fixed CVEs: CVE-2017-9226 CVE-2017-9225 CVE-2017-9224 CVE-2017-9227 CVE-2017-9229 CVE-2017-9228

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Type	Severity
353721	Rocky Linux 8.6 [CIQ] Security Update: oniguruma / oniguruma-debuginfo / oniguruma-debugsource / etc Multiple Vulnerabilities (ciqsa-2026_0123)	Nessus	Rocky Linux Local Security Checks	Local	critical
121702	Photon OS 1.0: Ruby PHSA-2017-0021	Nessus	PhotonOS Local Security Checks	Local	critical
101745	Fedora 26 : oniguruma (2017-ee01a2ced6)	Nessus	Fedora Local Security Checks	Local	critical
100730	Fedora 25 : oniguruma (2017-60997f0d14)	Nessus	Fedora Local Security Checks	Local	critical

Detections

Analytics

CVE-2017-9225

critical

Tenable Plugins

critical

critical

critical

critical