Null Pointer Dereference in newlib libc Library Affects Multiple Versions
CVE-2019-14877

6.5MEDIUM

Key Information:

Vendor
Red Hat
Status
Newlib
Vendor
CVE Published:
19 March 2020

Summary

A vulnerability exists in the __mdiff function of the newlib libc library, where prior versions to 3.3.0 do not properly verify successful memory allocation. This oversight can lead to a null pointer dereference when accessing the _wds and _sign variables after a failed allocation, potentially resulting in application crashes or unpredictable behavior.

Affected Version(s)

newlib all newlib versions prior to 3.3.0

References

https://census-labs.com/news/2020/01/31/multiple-null-poi...
x_refsource_CONFIRM

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.