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.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | < V1.1 |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | RUGGEDCOM ROX MX5000 | < V2.17.0 |
| Siemens | RUGGEDCOM ROX MX5000RE | < V2.17.0 |
| Siemens | RUGGEDCOM ROX RX1400 | < V2.17.0 |
| Siemens | RUGGEDCOM ROX RX1500 | < V2.17.0 |
| Siemens | RUGGEDCOM ROX RX1501 | < V2.17.0 |
| Siemens | RUGGEDCOM ROX RX1510 | < V2.17.0 |
| Siemens | RUGGEDCOM ROX RX1511 | < V2.17.0 |
| Siemens | RUGGEDCOM ROX RX1512 | < V2.17.0 |
| Siemens | RUGGEDCOM ROX RX1524 | < V2.17.0 |
| Siemens | RUGGEDCOM ROX RX1536 | < V2.17.0 |
| Siemens | RUGGEDCOM ROX RX5000 | < V2.17.0 |
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdfThird Party Advisory
- https://github.com/json-c/json-c/pull/592Exploit, Patch, Third Party Advisory
- https://github.com/rsyslog/libfastjson/issues/161Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/05/msg00032.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/05/msg00034.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00031.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00023.htmlThird Party Advisory
- 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://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
- https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdfThird Party Advisory
- https://github.com/json-c/json-c/pull/592Exploit, Patch, Third Party Advisory
- https://github.com/rsyslog/libfastjson/issues/161Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/05/msg00032.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/05/msg00034.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00031.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00023.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/07/msg00021.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://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
- https://cert-portal.siemens.com/productcert/html/ssa-202008.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-637483.html
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html
Timeline
- Published
- May 9, 2020
- Last modified
- Oct 14, 2026
- NVD status
- Modified