Newlib libc Library up to 3.2.x mprec.c __i2b null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Newlib libc Library up to 3.2.x. This affects the function __i2b in the library newlib/libc/stdlib/mprec.c. The manipulation leads to null pointer dereference. This vulnerability is uniquely identified as CVE-2019-14874. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Detailsinfo

A vulnerability was found in Newlib libc Library up to 3.2.x (Software Library). It has been rated as problematic. Affected by this issue is the function __i2b in the library newlib/libc/stdlib/mprec.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:

In the __i2b function of the newlib libc library, all versions prior to 3.3.0 (see newlib/libc/stdlib/mprec.c), Balloc is used to allocate a big integer, however no check is performed to verify if the allocation succeeded or not. The access of _ x[0] will trigger a null pointer dereference bug in case of a memory allocation failure.

The weakness was released 03/19/2020 (Website). The advisory is shared for download at census-labs.com. This vulnerability is handled as CVE-2019-14874 since 08/10/2019. The attack may be launched remotely. The requirement for exploitation is a simple authentication. There are known technical details, but no exploit is available.

Upgrading to version 3.3.0 eliminates this vulnerability.

Entries connected to this vulnerability are available at VDB-151814, VDB-151854, VDB-151855 and VDB-151857. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

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: libc Library 3.3.0

Timelineinfo

08/10/2019 🔍
03/19/2020 +222 days 🔍
03/20/2020 +1 days 🔍
04/17/2024 +1489 days 🔍

Sourcesinfo

Advisory: census-labs.com
Status: Not defined

CVE: CVE-2019-14874 (🔍)
GCVE (CVE): GCVE-0-2019-14874
GCVE (VulDB): GCVE-100-151856
See also: 🔍

Entryinfo

Created: 03/20/2020 07:47 AM
Updated: 04/17/2024 05:27 PM
Changes: 03/20/2020 07:47 AM (41), 03/20/2020 07:52 AM (12), 04/17/2024 05:27 PM (34)
Complete: 🔍
Cache ID: 18:C35:40

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