CVE-2020-12762
Public on 2020-05-09
Modified on 2024-02-12
Description
A flaw was found in json-c. In printbuf_memappend, certain crafted values can overflow the memory allowing an attacker to write past the memory boundary. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Severity
Important
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | json-c | 2020-06-23 | ALAS-2020-1381 | Fixed |
| Amazon Linux 2 - Core | json-c | 2020-06-26 | ALAS2-2020-1442 | Fixed |
| Amazon Linux 2023 | json-c | 2023-06-21 | ALAS2023-2023-232 | Fixed |
| Amazon Linux 2 - Core | libfastjson | 2023-06-05 | ALAS2-2023-2079 | Fixed |
| Amazon Linux 2023 | libfastjson | 2023-06-05 | ALAS2023-2023-205 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | CVSSv2 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
| NVD | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |