Vulnerability 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.
CVSS Score
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Json-C | Json-C | < 0.15-20200726 |
| Fedoraproject | Fedora | 30 |
| Debian | Debian Linux | 8.0 |
| Canonical | Ubuntu Linux | 12.04 |
| Siemens | Sinec Ins | - |
Related Weaknesses (CWE)
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdfThird Party Advisory
- https://github.com/json-c/json-c/pull/592ExploitPatchThird Party Advisory
- https://github.com/rsyslog/libfastjson/issues/161ExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/05/msg00032.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/05/msg00034.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00031.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00023.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202006-13Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210521-0001/Third Party Advisory
- https://usn.ubuntu.com/4360-1/Third Party Advisory
- https://usn.ubuntu.com/4360-4/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4741Third Party Advisory
FAQ
What is CVE-2020-12762?
CVE-2020-12762 is a vulnerability with a CVSS score of 7.8 (HIGH). json-c through 0.14 has an integer overflow and out-of-bounds write via a large JSON file, as demonstrated by printbuf_memappend.
How severe is CVE-2020-12762?
CVE-2020-12762 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-12762?
Check the references section above for vendor advisories and patch information. Affected products include: Json-C Json-C, Fedoraproject Fedora, Debian Debian Linux, Canonical Ubuntu Linux, Siemens Sinec Ins.