1. Home
  2. CVE Database
  3. CVE-2019-14877
MEDIUM · 6.5

CVE-2019-14877

In the __mdiff function of the newlib libc library, all versions prior to 3.3.0 (see newlib/libc/stdlib/mprec.c), Balloc is used to allocate big integers, however no check is performed to verify if th...

Vulnerability Description

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

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
Newlib ProjectNewlib< 3.3.0

Related Weaknesses (CWE)

CWE-476

References

FAQ

What is CVE-2019-14877?

CVE-2019-14877 is a vulnerability with a CVSS score of 6.5 (MEDIUM). In the __mdiff function of the newlib libc library, all versions prior to 3.3.0 (see newlib/libc/stdlib/mprec.c), Balloc is used to allocate big integers, however no check is performed to verify if th...

How severe is CVE-2019-14877?

CVE-2019-14877 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-14877?

Check the references section above for vendor advisories and patch information. Affected products include: Newlib Project Newlib.