PCRE 8.40 libpcre1 pcre_get.c pcre32_copy_substring memory corruption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in PCRE 8.40. Affected by this issue is the function pcre32_copy_substring of the file pcre_get.c of the component libpcre1. The manipulation results in memory corruption. This vulnerability is cataloged as CVE-2017-7246. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in PCRE 8.40 (Programming Tool Software). It has been classified as critical. Affected is the function pcre32_copy_substring of the file pcre_get.c of the component libpcre1. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Stack-based buffer overflow in the pcre32_copy_substring function in pcre_get.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a denial of service (WRITE of size 268) or possibly have unspecified other impact via a crafted file.

The bug was discovered 03/23/2017. The weakness was shared 03/23/2017 by Agostino Sarubbo with Gentoo (Website). The advisory is shared for download at securityfocus.com. This vulnerability is traded as CVE-2017-7246 since 03/23/2017. 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 104068 (GLSA-201710-25 : PCRE: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 8 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (104068) and SecurityFocus (BID 97067†). The entries VDB-98482 and VDB-98483 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 104068
Nessus Name: GLSA-201710-25 : PCRE: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

03/23/2017 🔍
03/23/2017 +0 days 🔍
03/23/2017 +0 days 🔍
03/23/2017 +0 days 🔍
03/23/2017 +0 days 🔍
03/24/2017 +1 days 🔍
10/23/2017 +213 days 🔍
10/23/2017 +0 days 🔍
11/15/2022 +1849 days 🔍

Sourcesinfo

Advisory: RHSA-2018:2486⛔
Researcher: Agostino Sarubbo
Organization: Gentoo
Status: Not defined

CVE: CVE-2017-7246 (🔍)
GCVE (CVE): GCVE-0-2017-7246
GCVE (VulDB): GCVE-100-98484
SecurityFocus: 97067 - libpcre Multiple Security Vulnerabilities
OSVDB: - CVE-2017-7246 - PCRE - Buffer Overflow Issue

See also: 🔍

Entryinfo

Created: 03/24/2017 07:41
Updated: 11/15/2022 08:08
Changes: 03/24/2017 07:41 (72), 09/13/2020 10:56 (8), 11/15/2022 08:08 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!