CVE-2020-12762

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2020-12762
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-12762.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-12762
Downstream
Related
Published
2020-05-09T18:15:11Z
Modified
2026-07-07T08:50:18Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

json-c through 0.14 has an integer overflow and out-of-bounds write via a large JSON file, as demonstrated by printbuf_memappend.

Database specific 
{
    "unresolved_ranges":  [
        {
            "cpes":  [
                "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "12.04"
                },
                {
                    "last_affected":  "12.04"
                },
                {
                    "introduced":  "14.04"
                },
                {
                    "last_affected":  "14.04"
                },
                {
                    "introduced":  "16.04"
                },
                {
                    "last_affected":  "16.04"
                },
                {
                    "introduced":  "18.04"
                },
                {
                    "last_affected":  "18.04"
                },
                {
                    "introduced":  "19.10"
                },
                {
                    "last_affected":  "19.10"
                },
                {
                    "introduced":  "20.04"
                },
                {
                    "last_affected":  "20.04"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "canonical:ubuntu_linux"
        },
        {
            "cpes":  [
                "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "8.0"
                },
                {
                    "last_affected":  "8.0"
                },
                {
                    "introduced":  "9.0"
                },
                {
                    "last_affected":  "9.0"
                },
                {
                    "introduced":  "10.0"
                },
                {
                    "last_affected":  "10.0"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "debian:debian_linux"
        },
        {
            "cpes":  [
                "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "30"
                },
                {
                    "last_affected":  "30"
                },
                {
                    "introduced":  "31"
                },
                {
                    "last_affected":  "31"
                },
                {
                    "introduced":  "32"
                },
                {
                    "last_affected":  "32"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "fedoraproject:fedora"
        },
        {
            "cpes":  [
                "cpe:2.3:a:siemens:sinec_ins:1.0:-:*:*:*:*:*:*",
                "cpe:2.3:a:siemens:sinec_ins:1.0:sp1:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "1.0-NA"
                },
                {
                    "last_affected":  "1.0-NA"
                },
                {
                    "introduced":  "1.0-sp1"
                },
                {
                    "last_affected":  "1.0-sp1"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "siemens:sinec_ins"
        }
    ]
}
References

Affected packages

Git / github.com/json-c/json-c

Affected ranges

Type
GIT
Repo
https://github.com/json-c/json-c
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9021cdcdd01fc9dbcbe1f06391848c2ac915212f
Database specific
Show details 
{
    "cpe":  "cpe:2.3:a:json-c:json-c:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "0.15-20200726"
        }
    ],
    "source":  "CPE_RANGE"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-12762.json"