Newlib libc Library up to 3.2.x mprec.c __d2b 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, which was classified as problematic, was found in Newlib libc Library up to 3.2.x. Impacted is the function __d2b in the library newlib/libc/stdlib/mprec.c. The manipulation results in null pointer dereference. This vulnerability is known as CVE-2019-14878. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Newlib libc Library up to 3.2.x (Software Library). Affected is the function __d2b in the library newlib/libc/stdlib/mprec.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. CVE summarizes:

In the __d2b 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. Accessing _x will trigger a null pointer dereference bug in case of a memory allocation failure.

The weakness was published 03/19/2020 (Website). The advisory is shared for download at census-labs.com. This vulnerability is traded as CVE-2019-14878. It is possible to launch the attack remotely. A authentication is required for exploitation. There are known technical details, but no exploit is available.

Upgrading to version 3.3.0 eliminates this vulnerability.

Similar entries are available at VDB-151814, VDB-151854, VDB-151855 and VDB-151856. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

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: 🔍

Physical: No
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
Confirmation: 🔍

CVE: CVE-2019-14878 (🔍)
GCVE (CVE): GCVE-0-2019-14878
GCVE (VulDB): GCVE-100-151860
See also: 🔍

Entryinfo

Created: 03/20/2020 07:48
Updated: 04/17/2024 17:41
Changes: 03/20/2020 07:48 (41), 03/20/2020 07:53 (12), 10/04/2020 09:00 (1), 04/17/2024 17:41 (34)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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