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CVE-2019-14878

MEDIUM
6.5
CVSS Score
Published: March 19, 2020 at 03:04 PM UTC
Updated: June 17, 2026 at 02:19 AM UTC
2 products affected across 2 vendorsNewlibProject Newlib

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Severity
MEDIUM6.5
Exploit prediction
EPSS 1%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Newlib· Newlib Project
95%
v < 3.3.0
Affected range stops below 3.3.0, so it looks safe — our inference, not a vendor statement
Project Newlib· Red Hat
60%
v < 3.3.0
Affected range stops below 3.3.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_CONFIRMExploitThird Party Advisory
Source: [email protected]
https://census-labs.com/news/2020/01/31/multiple-null-pointer-dereference-vulnerabilities-in-newlib/

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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