Perl up to 5.38.0 Regular Expression Compiler heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Perl up to 5.38.0. This affects an unknown function of the component Regular Expression Compiler. The manipulation results in heap-based overflow. This vulnerability is cataloged as CVE-2023-47038. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Perl up to 5.38.0 (Programming Language Software). Affected is an unknown part of the component Regular Expression Compiler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability was found in perl 5.30.0 through 5.38.0. This issue occurs when a crafted regular expression is compiled by perl, which can allow an attacker controlled byte buffer overflow in a heap allocated buffer.

The weakness was shared 11/27/2023. The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2023-47038 since 10/30/2023. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/03/2025).

The vulnerability scanner Nessus provides a plugin with the ID 235551 (RockyLinux 8 : perl:5.32 (RLSA-2024:3128)), 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 databases at Tenable (235551) and EUVD (EUVD-2023-51193). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.0
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 235551
Nessus Name: RockyLinux 8 : perl:5.32 (RLSA-2024:3128)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/30/2023 🔍
11/27/2023 +28 days 🔍
11/27/2023 +0 days 🔍
08/03/2025 +615 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2023-47038 (🔍)
GCVE (CVE): GCVE-0-2023-47038
GCVE (VulDB): GCVE-100-246144
EUVD: 🔍

Entryinfo

Created: 11/27/2023 07:00
Updated: 08/03/2025 14:41
Changes: 11/27/2023 07:00 (36), 12/18/2023 15:07 (2), 09/17/2024 00:14 (37), 05/08/2025 08:38 (2), 08/03/2025 14:41 (1)
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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