CVE-2020-12762high
Description
json-c through 0.14 has an integer overflow and out-of-bounds write via a large JSON file, as demonstrated by printbuf_memappend.
References
https://github.com/json-c/json-c/pull/592
https://github.com/rsyslog/libfastjson/issues/161
https://usn.ubuntu.com/4360-1/
https://lists.debian.org/debian-lts-announce/2020/05/msg00032.html
https://lists.debian.org/debian-lts-announce/2020/05/msg00034.html
https://usn.ubuntu.com/4360-4/
https://security.gentoo.org/glsa/202006-13
https://lists.debian.org/debian-lts-announce/2020/07/msg00031.html
Details
Source: MITRE
Published: 2020-05-09
Updated: 2021-05-21
Type: CWE-787
Risk Information
CVSS v2
Base Score: 6.8
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 8.6
Severity: MEDIUM
CVSS v3
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH