CVE-2020-12762

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 breakdown

Affected products

• Canonical / Ubuntu Linux20.04 – 20.04
• Canonical / Ubuntu Linux12.04 – 12.04
• Canonical / Ubuntu Linux14.04 – 14.04
• Canonical / Ubuntu Linux16.04 – 16.04
• Canonical / Ubuntu Linux18.04 – 18.04
• Canonical / Ubuntu Linux19.10 – 19.10
• Debian / debian_linux10.0 – 10.0
• Debian / debian_linux8.0 – 8.0
• Debian / debian_linux9.0 – 9.0
• fedoraproject / fedora30 – 30
• fedoraproject / fedora31 – 31
• fedoraproject / fedora32 – 32
• json-c / json-c0.15-20200726
• Siemens / SINEC INS
• Siemens / SINEC INS1.0 – 1.0
• Siemens / SINEC INS1.0 – 1.0

References

• PATCHhttps://github.com/json-c/json-c/pull/592
• MISChttps://github.com/rsyslog/libfastjson/issues/161
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CQQRRGBQCAWNCCJ2HN3W5SSCZ4QGMXQI/
• VENDOR_ADVISORYhttps://usn.ubuntu.com/4360-1/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CBR36IXYBHITAZFB5PFBJTED22WO5ONB/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W226TSCJBEOXDUFVKNWNH7ETG7AR6MCS/
• MAILING_LISThttps://lists.debian.org/debian-lts-announce/2020/05/msg00032.html
• MAILING_LISThttps://lists.debian.org/debian-lts-announce/2020/05/msg00034.html
• VENDOR_ADVISORYhttps://usn.ubuntu.com/4360-4/
• MISChttps://security.gentoo.org/glsa/202006-13
• MAILING_LISThttps://lists.debian.org/debian-lts-announce/2020/07/msg00031.html
• VENDOR_ADVISORYhttps://www.debian.org/security/2020/dsa-4741
• MISChttps://security.netapp.com/advisory/ntap-20210521-0001/
• MISChttps://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf
• MAILING_LISThttps://lists.debian.org/debian-lts-announce/2023/06/msg00023.html