CVE-2020-12762
Published: August 31, 2023Last modified: August 31, 2023
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | REQUIRED |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | json-c | Not affected (0.16-r2) |
| Stream | json-c | Not affected (0.17-r0) |
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf
- https://github.com/json-c/json-c/pull/592
- https://github.com/rsyslog/libfastjson/issues/161
- https://lists.debian.org/debian-lts-announce/2020/05/msg00032.html
- https://lists.debian.org/debian-lts-announce/2020/05/msg00034.html
- https://lists.debian.org/debian-lts-announce/2020/07/msg00031.html
- https://lists.debian.org/debian-lts-announce/2023/06/msg00023.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CBR36IXYBHITAZFB5PFBJTED22WO5ONB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CQQRRGBQCAWNCCJ2HN3W5SSCZ4QGMXQI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W226TSCJBEOXDUFVKNWNH7ETG7AR6MCS/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/CBR36IXYBHITAZFB5PFBJTED22WO5ONB/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/CQQRRGBQCAWNCCJ2HN3W5SSCZ4QGMXQI/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/W226TSCJBEOXDUFVKNWNH7ETG7AR6MCS/
- https://security.gentoo.org/glsa/202006-13
- https://security.netapp.com/advisory/ntap-20210521-0001/
- https://usn.ubuntu.com/4360-1/
- https://usn.ubuntu.com/4360-4/
- https://www.debian.org/security/2020/dsa-4741