Oniguruma before 6.9.3 allows Stack Exhaustion in regcomp.c because of recursion in regparse.c.
- Published
- Sep 9, 2019
- Updated
- Jun 16, 2026
- EPSS
- 2.8% · 86th percentile
- CWE
- CWE-674
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.8%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| oniguruma project | oniguruma | cpe:2.3:a:oniguruma_project:oniguruma |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux14.04
- debian debian linux8.0
- fedoraproject fedora29
- fedoraproject fedora30
- oniguruma project onigurumabefore 6.9.3
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | apcu-panel | before 5.1.17-1.module_el8.3.0+2009+b272fdef | 5.1.17-1.module_el8.3.0+2009+b272fdef |
| AlmaLinux:8 | libzip | before 1.5.2-1.module_el8.5.0+152+112d3b8c | 1.5.2-1.module_el8.5.0+152+112d3b8c |
| AlmaLinux:8 | libzip | before 1.5.2-1.module_el8.3.0+2009+b272fdef | 1.5.2-1.module_el8.3.0+2009+b272fdef |
| AlmaLinux:8 | libzip | before 1.5.2-1.module_el8.4.0+2229+b272fdef | 1.5.2-1.module_el8.4.0+2229+b272fdef |
| AlmaLinux:8 | libzip-devel | before 1.5.2-1.module_el8.4.0+2229+b272fdef | 1.5.2-1.module_el8.4.0+2229+b272fdef |
| AlmaLinux:8 | libzip-devel | before 1.5.2-1.module_el8.5.0+152+112d3b8c | 1.5.2-1.module_el8.5.0+152+112d3b8c |
| AlmaLinux:8 | libzip-devel | before 1.5.2-1.module_el8.3.0+2009+b272fdef | 1.5.2-1.module_el8.3.0+2009+b272fdef |
| AlmaLinux:8 | libzip-tools | before 1.5.2-1.module_el8.4.0+2229+b272fdef | 1.5.2-1.module_el8.4.0+2229+b272fdef |
| AlmaLinux:8 | libzip-tools | before 1.5.2-1.module_el8.5.0+152+112d3b8c | 1.5.2-1.module_el8.5.0+152+112d3b8c |
| AlmaLinux:8 | libzip-tools | before 1.5.2-1.module_el8.3.0+2009+b272fdef | 1.5.2-1.module_el8.3.0+2009+b272fdef |
| AlmaLinux:8 | oniguruma | before 6.8.2-2.1.el8_9 | 6.8.2-2.1.el8_9 |
| AlmaLinux:8 | oniguruma-devel | before 6.8.2-2.1.el8_9 | 6.8.2-2.1.el8_9 |
| AlmaLinux:8 | php | before 7.3.20-1.module_el8.4.0+2229+b272fdef | 7.3.20-1.module_el8.4.0+2229+b272fdef |
| AlmaLinux:8 | php | before 7.3.20-1.module_el8.5.0+152+112d3b8c | 7.3.20-1.module_el8.5.0+152+112d3b8c |
| AlmaLinux:8 | php | before 7.3.20-1.module_el8.3.0+2009+b272fdef | 7.3.20-1.module_el8.3.0+2009+b272fdef |
| AlmaLinux:8 | php-bcmath | before 7.3.20-1.module_el8.4.0+2229+b272fdef | 7.3.20-1.module_el8.4.0+2229+b272fdef |
| AlmaLinux:8 | php-bcmath | before 7.3.20-1.module_el8.5.0+152+112d3b8c | 7.3.20-1.module_el8.5.0+152+112d3b8c |
| AlmaLinux:8 | php-bcmath | before 7.3.20-1.module_el8.3.0+2009+b272fdef | 7.3.20-1.module_el8.3.0+2009+b272fdef |
| AlmaLinux:8 | php-cli | before 7.3.20-1.module_el8.5.0+152+112d3b8c | 7.3.20-1.module_el8.5.0+152+112d3b8c |
| AlmaLinux:8 | php-cli | before 7.3.20-1.module_el8.3.0+2009+b272fdef | 7.3.20-1.module_el8.3.0+2009+b272fdef |
| AlmaLinux:8 | php-cli | before 7.3.20-1.module_el8.4.0+2229+b272fdef | 7.3.20-1.module_el8.4.0+2229+b272fdef |
| AlmaLinux:8 | php-common | before 7.3.20-1.module_el8.4.0+2229+b272fdef | 7.3.20-1.module_el8.4.0+2229+b272fdef |
| AlmaLinux:8 | php-common | before 7.3.20-1.module_el8.3.0+2009+b272fdef | 7.3.20-1.module_el8.3.0+2009+b272fdef |
| AlmaLinux:8 | php-common | before 7.3.20-1.module_el8.5.0+152+112d3b8c | 7.3.20-1.module_el8.5.0+152+112d3b8c |
+96
Same product
oniguruma project: all recordsOther highest-scoring records for the same primary product.
- CVE-2019-19012An integer overflow in the search_in_range function in regexec.c in Oniguruma 6.x before 6.9.4_rc2 leads to an out-of-bounds read, in which 42Plan
- CVE-2019-13224A use-after-free in onig_new_deluxe() in regext.c in Oniguruma 6.9.2 allows attackers to potentially cause information disclosure, denial of40Plan
- CVE-2019-19204An issue was discovered in Oniguruma 6.x before 6.9.4_rc2.32Monitor
- CVE-2019-19203An issue was discovered in Oniguruma 6.x before 6.9.4_rc2.31Monitor
- CVE-2019-13225A NULL Pointer Dereference in match_at() in regexec.c in Oniguruma 6.9.2 allows attackers to potentially cause denial of service by providin27Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:apcu-panel | 5.1.17-1.module_el8.3.0+2009+b272fdef · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libzip | 1.5.2-1.module_el8.5.0+152+112d3b8c · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libzip-devel | 1.5.2-1.module_el8.4.0+2229+b272fdef · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libzip-tools | 1.5.2-1.module_el8.5.0+152+112d3b8c · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php | 7.3.20-1.module_el8.4.0+2229+b272fdef · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-bcmath | 7.3.20-1.module_el8.4.0+2229+b272fdef · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-cli | 7.3.20-1.module_el8.5.0+152+112d3b8c · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-common | 7.3.20-1.module_el8.3.0+2009+b272fdef · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-dba | 7.3.20-1.module_el8.5.0+152+112d3b8c · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-dbg | 7.3.20-1.module_el8.3.0+2009+b272fdef · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-devel | 7.3.20-1.module_el8.4.0+2229+b272fdef · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-embedded | 7.3.20-1.module_el8.3.0+2009+b272fdef · AlmaLinux:8 | Package registry (OSV) |
| debian:libonig | 6.9.4-1 · Debian:12 | Package registry (OSV) |
| opensuse:oniguruma | 6.7.0-150000.3.3.1 · openSUSE:Leap Micro 5.2 | Package registry (OSV) |
| red hat:apcu-panel | 0:5.1.17-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libzip | 0:1.5.2-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libzip-debuginfo | 0:1.5.2-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libzip-debugsource | 0:1.5.2-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libzip-devel | 0:1.5.2-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libzip-tools | 0:1.5.2-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libzip-tools-debuginfo | 0:1.5.2-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:php | 0:7.3.20-1.module+el8.2.0+7373+b272fdef · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:php-bcmath | 0:7.3.20-1.module+el8.2.0+7373+b272fdef · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:php-bcmath-debuginfo | 0:7.3.20-1.module+el8.2.0+7373+b272fdef · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:php-cli | 0:7.3.20-1.module+el8.2.0+7373+b272fdef · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:php-cli-debuginfo | 0:7.3.20-1.module+el8.2.0+7373+b272fdef · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| rocky linux:libzip | 0:1.5.2-1.module+el8.4.0+414+2e7afcdd · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:php | 0:7.3.20-1.module+el8.4.0+414+2e7afcdd · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:php-pear | 1:1.10.9-1.module+el8.4.0+414+2e7afcdd · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:php-pecl-apcu | 0:5.1.17-1.module+el8.4.0+414+2e7afcdd · Rocky Linux:8 | Package registry (OSV) |
+4
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-674 · Uncontrolled RecursionCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- github.com/kkos/oniguruma/commit/4097828d7cc87589864fecf452f2cd46c5f37180
- github.com/kkos/oniguruma/compare/v6.9.2...v6.9.3
- lists.debian.org/debian-lts-announce/2019/09/msg00010.html
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NWOWZZNFSAWM3BUTQNAE3PD44A6JU4KE/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZW47MSFZ6WYOAOFXHBDGU4LYACFRKC2Y/
- usn.ubuntu.com/4460-1/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.