Oniguruma up to 6.2.0 Regular Expression mbc_enc_len out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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8.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Oniguruma up to 6.2.0. It has been classified as critical. The impacted element is the function mbc_enc_len of the component Regular Expression. Performing a manipulation results in out-of-bounds. This vulnerability is reported as CVE-2017-9227. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Oniguruma up to 6.2.0. This affects the function mbc_enc_len of the component Regular Expression. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and 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 stack out-of-bounds read occurs in mbc_enc_len() during regular expression searching. Invalid handling of reg->dmin in forward_search_range() could result in an invalid pointer dereference, as an out-of-bounds read from a stack buffer.

The bug was discovered 05/24/2017. The weakness was disclosed 05/24/2017 (GitHub Repository). The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2017-9227 since 05/24/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

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 databases at Tenable (100478) and SecurityFocus (BID 100538†). The entries VDB-101754, VDB-101755, VDB-101756 and VDB-101758 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: 8.5
VulDB Meta Temp Score: 8.1

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
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

05/23/2017 🔍
05/24/2017 +1 days 🔍
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
Researcher: lxxxxfdh
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-9227 (🔍)
GCVE (CVE): GCVE-0-2017-9227
GCVE (VulDB): GCVE-100-101757
SecurityFocus: 100538 - Oniguruma CVE-2017-9227 Out of Bounds Read Memory Corruption Vulnerability

See also: 🔍

Entryinfo

Created: 05/25/2017 09:50
Updated: 12/07/2022 11:35
Changes: 05/25/2017 09:50 (74), 12/30/2019 08:32 (6), 12/25/2020 15:29 (3), 12/07/2022 11:35 (4)
Complete: 🔍
Cache ID: 216:719:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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