VDB-137688 · CVE-2019-13225 · Nessus 236538

Oniguruma 6.9.2 regexec.c match_at Regular Expression null pointer dereference

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5.8	$0-$5k	0.00

Summaryinfo

A vulnerability described as problematic has been identified in Oniguruma 6.9.2. Affected by this issue is the function match_at of the file regexec.c. The manipulation as part of Regular Expression results in null pointer dereference. This vulnerability was named CVE-2019-13225. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Oniguruma 6.9.2. It has been classified as problematic. Affected is the function match_at of the file regexec.c. The manipulation as part of a Regular Expression leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

A NULL Pointer Dereference in match_at() in regexec.c in Oniguruma 6.9.2 allows attackers to potentially cause denial of service by providing a crafted regular expression. Oniguruma issues often affect Ruby, as well as common optional libraries for PHP and Rust.

The weakness was presented 07/10/2019 (GitHub Repository). The advisory is shared for download at github.com. This vulnerability is traded as CVE-2019-13225 since 07/03/2019. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 236538 (Alibaba Cloud Linux 3 : 0070: oniguruma (ALINUX3-SA-2022:0070)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (236538). See VDB-137687 for similar entry. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Oniguruma

Version

6.9.2

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 236538
Nessus Name: Alibaba Cloud Linux 3 : 0070: oniguruma (ALINUX3-SA-2022:0070)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

07/03/2019 🔍
07/10/2019 +7 days 🔍
07/11/2019 +1 days 🔍
05/22/2025 +2141 days 🔍

Sourcesinfo

Advisory: c509265c5f6ae7264f7b8a8aae1cfa5fc59d108c
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-13225 (🔍)
GCVE (CVE): GCVE-0-2019-13225
GCVE (VulDB): GCVE-100-137688
See also: 🔍

Entryinfo

Created: 07/11/2019 11:28
Updated: 05/22/2025 01:26
Changes: 07/11/2019 11:28 (56), 07/03/2020 17:51 (1), 10/24/2023 12:40 (5), 10/24/2023 12:47 (1), 05/22/2025 01:26 (23)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.