International Components for Unicode up to 66.1 common/unistr.cpp UnicodeString::doAppend integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability was found in International Components for Unicode up to 66.1. It has been rated as critical. Affected by this issue is the function UnicodeString::doAppend of the file common/unistr.cpp. Performing a manipulation results in integer overflow. This vulnerability is known as CVE-2020-10531. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in International Components for Unicode up to 66.1. This affects the function UnicodeString::doAppend of the file common/unistr.cpp. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in International Components for Unicode (ICU) for C/C++ through 66.1. An integer overflow, leading to a heap-based buffer overflow, exists in the UnicodeString::doAppend() function in common/unistr.cpp.

The weakness was published 03/12/2020. This vulnerability is uniquely identified as CVE-2020-10531 since 03/12/2020. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 216256 (Oracle Linux 8 : nodejs:20 (ELSA-2025-1351)), 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 vulnerability database at Tenable (216256). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
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: 216256
Nessus Name: Oracle Linux 8 : nodejs:20 (ELSA-2025-1351)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

03/12/2020 🔍
03/12/2020 +0 days 🔍
03/13/2020 +1 days 🔍
05/11/2025 +1885 days 🔍

Sourcesinfo

Advisory: RHSA-2020:0738
Status: Confirmed

CVE: CVE-2020-10531 (🔍)
GCVE (CVE): GCVE-0-2020-10531
GCVE (VulDB): GCVE-100-151515

Entryinfo

Created: 03/13/2020 16:39
Updated: 05/11/2025 05:09
Changes: 03/13/2020 16:39 (35), 03/13/2020 16:44 (17), 04/14/2024 14:52 (19), 04/14/2024 14:54 (2), 02/15/2025 02:23 (8), 05/11/2025 05:09 (4)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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