CVE-2019-14877
6.5 · MEDIUMOverview
CVE-2019-14877 is a medium-severity vulnerability affecting newlib_project newlib. It was published on March 19, 2020 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from newlib_project. Update newlib to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| newlib_project | newlib | >= 0, < 3.3.0 | Affected |
Frequently Asked Questions
What is CVE-2019-14877?
CVE-2019-14877 is a medium-severity vulnerability affecting newlib_project newlib. It was published on March 19, 2020 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
How severe is CVE-2019-14877?
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2019-14877?
Check the references section for vendor advisories and patches from newlib_project. Update newlib to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2019-14877?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-14877 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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