Synchrony up to 2.4.3 LiteralMap prototype pollution

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Synchrony up to 2.4.3. It has been classified as problematic. Affected is the function LiteralMap. Performing a manipulation results in prototype pollution. This vulnerability is known as CVE-2023-45811. Attacking locally is a requirement. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Synchrony up to 2.4.3. It has been classified as problematic. This affects the function LiteralMap. The manipulation with an unknown input leads to a prototype pollution vulnerability. CWE is classifying the issue as CWE-1321. The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Synchrony deobfuscator is a javascript cleaner & deobfuscator. A `__proto__` pollution vulnerability exists in versions before v2.4.4. Successful exploitation could lead to arbitrary code execution. A `__proto__` pollution vulnerability exists in the `LiteralMap` transformer allowing crafted input to modify properties in the Object prototype. A fix has been released in `[email protected]`. Users are advised to upgrade. Users unable to upgrade should launch node with the [--disable-proto=delete][disable-proto] or [--disable-proto=throw][disable-proto] flags

The weakness was published 10/18/2023 as GHSA-jg82-xh3w-rhxx. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2023-45811 since 10/13/2023. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

Upgrading to version 2.4.4 eliminates this vulnerability. Applying the patch b583126be94c4db7c5a478f1c5204bfb4162cf40 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 4.5
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 8.1
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Prototype pollution
CWE: CWE-1321 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Synchrony 2.4.4
Patch: b583126be94c4db7c5a478f1c5204bfb4162cf40

Timelineinfo

10/13/2023 🔍
10/18/2023 +5 days 🔍
10/18/2023 +0 days 🔍
07/22/2025 +643 days 🔍

Sourcesinfo

Advisory: GHSA-jg82-xh3w-rhxx
Status: Confirmed

CVE: CVE-2023-45811 (🔍)
GCVE (CVE): GCVE-0-2023-45811
GCVE (VulDB): GCVE-100-242835

Entryinfo

Created: 10/18/2023 07:48
Updated: 07/22/2025 18:36
Changes: 10/18/2023 07:48 (51), 11/10/2023 23:35 (11), 07/22/2025 18:36 (15)
Complete: 🔍
Cache ID: 216::103

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