uClibc-ng up to 1.0.36 malloc-simple integer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in uClibc-ng up to 1.0.36. It has been declared as critical. Affected by this vulnerability is the function malloc-simple. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The software 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 05/04/2022 as icsa-21-119-04. The advisory is shared at cisa.gov. This vulnerability is known as CVE-2021-27419 since 02/19/2021. Technical details are known, but no exploit is available.

Upgrading to version 1.0.37 eliminates this vulnerability. The upgrade is hosted for download at downloads.uclibc-ng.org.



CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.1

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

CNA Base Score: 7.3
CNA Vector (ICS-CERT): 🔍



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


Class: Integer overflow
CWE: CWE-190 / CWE-189
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: uClibc-ng 1.0.37


02/19/2021 🔍
05/04/2022 +438 days 🔍
05/04/2022 +0 days 🔍
05/05/2022 +1 days 🔍


Advisory: icsa-21-119-04
Status: Confirmed

CVE: CVE-2021-27419 (🔍)


Created: 05/04/2022 06:24 AM
Updated: 05/05/2022 05:15 PM
Changes: 05/04/2022 06:24 AM (50), 05/05/2022 05:15 PM (1)
Complete: 🔍


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