Oniguruma up to 6.2.0 Regular Expression left_adjust_char_head null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Oniguruma up to 6.2.0. It has been rated as problematic. This impacts the function left_adjust_char_head of the component Regular Expression. The manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2017-9229. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Oniguruma up to 6.2.0 and classified as problematic. This issue affects the function left_adjust_char_head of the component Regular Expression. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

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.

The bug was discovered 05/24/2017. The weakness was shared 05/24/2017 (GitHub Repository). It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2017-9229 since 05/24/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 100478 (Debian DLA-958-1 : libonig security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276695 (Fedora Security Update for oniguruma (FEDORA-2017-60997f0d14)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (100478). The entries VDB-101754, VDB-101755, VDB-101756 and VDB-101757 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Oniguruma up to 6.2.0
  • Oniguruma-mod in Ruby up to 2.4.1
  • PHP up to 7.1.5

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: 100478
Nessus Name: Debian DLA-958-1 : libonig security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for oniguruma FEDORA-2017-e2d6d0067f
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: github.com

Timelineinfo

05/24/2017 🔍
05/24/2017 +0 days 🔍
05/24/2017 +0 days 🔍
05/24/2017 +0 days 🔍
05/25/2017 +1 days 🔍
05/28/2017 +3 days 🔍
05/30/2017 +2 days 🔍
12/07/2022 +2017 days 🔍

Sourcesinfo

Advisory: RHSA-2018:1296
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-9229 (🔍)
GCVE (CVE): GCVE-0-2017-9229
GCVE (VulDB): GCVE-100-101759
See also: 🔍

Entryinfo

Created: 05/25/2017 09:50
Updated: 12/07/2022 11:50
Changes: 05/25/2017 09:50 (72), 12/30/2019 08:40 (4), 12/07/2022 11:50 (5)
Complete: 🔍
Cache ID: 216:423:103

Be aware that VulDB is the high quality source for vulnerability data.

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