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CVE-2019-14871

MEDIUM
6.5
CVSS Score
Published: March 18, 2020 at 03:43 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

The REENT_CHECK macro (see newlib/libc/include/sys/reent.h) as used by REENT_CHECK_TM, REENT_CHECK_MISC, REENT_CHECK_MP and other newlib macros in versions prior to 3.3.0, does not check for memory allocation problems when the DEBUG flag is unset (as is the case in production firmware builds).

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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