Irregex Package up to 0.9.5 Backtrack Compilation Code Regular Expression resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Irregex Package up to 0.9.5. It has been declared as problematic. This issue affects some unknown processing of the component Backtrack Compilation Code. Executing a manipulation as part of Regular Expression can lead to resource management. This vulnerability is handled as CVE-2016-9954. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Irregex Package up to 0.9.5. It has been declared as problematic. This vulnerability affects some unknown processing of the component Backtrack Compilation Code. The manipulation as part of a Regular Expression leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. CVE summarizes:

The backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6 for Scheme allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression with a repeating pattern.

The bug was discovered 04/21/2017. The weakness was released 04/21/2017 by Peter Bex (oss-sec). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2016-9954 since 12/15/2016. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 96995 (FreeBSD : chicken -- multiple vulnerabilities (c6932dd4-eaff-11e6-9ac1-a4badb2f4699)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l.

Upgrading to version 0.9.6 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (96995) and SecurityFocus (BID 94942†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 6.3

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / 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: 96995
Nessus Name: FreeBSD : chicken -- multiple vulnerabilities (c6932dd4-eaff-11e6-9ac1-a4badb2f4699)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Irregex Package 0.9.6
Patch: github.com

Timelineinfo

12/14/2016 🔍
12/15/2016 +1 days 🔍
02/04/2017 +51 days 🔍
02/06/2017 +2 days 🔍
04/21/2017 +74 days 🔍
04/21/2017 +0 days 🔍
04/21/2017 +0 days 🔍
04/22/2017 +1 days 🔍
12/02/2022 +2050 days 🔍

Sourcesinfo

Advisory: a16ffc86eca15fca9e40607d41de3cea9cf868f1
Researcher: Peter Bex
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9954 (🔍)
GCVE (CVE): GCVE-0-2016-9954
GCVE (VulDB): GCVE-100-100456
SecurityFocus: 94942 - Irregex CVE-2016-9954 Denial of Service Vulnerability
OSVDB: - CVE-2016-9954 - IrRegular Expressions - Denial of Service Issue

Entryinfo

Created: 04/22/2017 08:47
Updated: 12/02/2022 07:18
Changes: 04/22/2017 08:47 (70), 09/19/2020 16:27 (3), 12/02/2022 07:18 (5)
Complete: 🔍
Cache ID: 216::103

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

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