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Vulnerability CVE-2019-14877
Published: 2020-03-19
| 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. |
Type:
CWE-476 (NULL Pointer Dereference)
CVSS2 => (AV:N/AC:L/Au:S/C:N/I:N/A:P)
| CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
4/10 |
2.9/10 |
8/10 |
| Exploit range |
Attack complexity |
Authentication |
Remote |
Low |
Single time |
| Confidentiality impact |
Integrity impact |
Availability impact |
None |
None |
Partial |
References: |
https://census-labs.com/news/2020/01/31/multiple-null-pointer-dereference-vulnerabilities-in-newlib/
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