PT-2020-9612 · Unknown · Newlib Libc

Dimitrios Glynos · Published 2020-03-19 · Updated 2020-03-24 · CVE-2019-14873

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions newlib libc library versions prior to 3.3.0

Description The issue arises in the multadd function of the newlib libc library. Specifically, when using Balloc to allocate a big integer, there is no verification to check if the allocation was successful. This oversight can lead to a null pointer dereference bug in the event of a memory allocation failure.

Recommendations For versions prior to 3.3.0, update to version 3.3.0 or later to resolve the issue.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2019-14873

Affected Products

Newlib Libc

References · 8

• 🔥 https://census-labs.com/news/2020/01/31/multiple-null-pointer-dereference-vulnerabilities-in-newlib · Exploit
• https://security-tracker.debian.org/tracker/CVE-2019-14873 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-14873 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-14873 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-14873 · Security Note
• https://osv.dev/vulnerability/CVE-2019-14873 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-14873 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-14873 · Security Note