PT-2020-9617 · Unknown · Newlib Libc

Dimitrios Glynos · Published 2020-03-19 · Updated 2020-03-24 · CVE-2019-14878

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 d2b function of the newlib libc library, where Balloc is used to allocate a big integer without verifying if the allocation was successful. This can lead to a null pointer dereference bug when accessing x in case 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-2019-14878

Affected Products

Newlib Libc

References · 8

• 🔥 https://census-labs.com/news/2020/01/31/multiple-null-pointer-dereference-vulnerabilities-in-newlib · Exploit
• https://osv.dev/vulnerability/CVE-2019-14878 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-14878 · Security Note
• https://ubuntu.com/security/CVE-2019-14878 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-14878 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-14878 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2019-14878 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-14878 · Vendor Advisory