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CVE-2020-12762

Status Candidate

Overview

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

Related Files

Red Hat Security Advisory 2021-4382-02
Posted Nov 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4382-02 - JSON-C implements a reference counting object model that allows users to easily construct JavaScript Object Notation objects in C, output them as JSON formatted strings, and parse JSON formatted strings back into the C representation of JSON objects. Issues addressed include integer overflow and out of bounds write vulnerabilities.

tags | advisory, overflow, javascript, vulnerability
systems | linux, redhat
advisories | CVE-2020-12762
SHA-256 | 742e73722d780cca4ec16e03133ef756fdac574fb815fad4b6594adab6bf6a27
Debian Security Advisory 4741-1
Posted Aug 28, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4741-1 - Tobias Stoeckmann discovered an integer overflow in the json-c JSON library, which could result in denial of service or potentially the execution of arbitrary code if large malformed JSON files are processed.

tags | advisory, denial of service, overflow, arbitrary
systems | linux, debian
advisories | CVE-2020-12762
SHA-256 | a624d5ab564c8fd412469da7a39fbfdbbb94b00bafbaef4eeaf9161434f5d3b9
Gentoo Linux Security Advisory 202006-13
Posted Jun 15, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202006-13 - Multiple vulnerabilities have been found in json-c, the worst of which could result in a Denial of Service condition. Versions less than 0.14-r3 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2020-12762
SHA-256 | 2d8a86b8fefdac05b90ebe6e85d8e1402912572c5fa9627a3cda991a1a1da182
Ubuntu Security Notice USN-4360-4
Posted May 28, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4360-4 - USN-4360-1 fixed a vulnerability in json-c. The security fix introduced a memory leak that was reverted in USN-4360-2 and USN-4360-3. This update provides the correct fix update for CVE-2020-12762. It was discovered that json-c incorrectly handled certain JSON files. An attacker could possibly use this issue to execute arbitrary code. Various other issues were also addressed.

tags | advisory, arbitrary, memory leak
systems | linux, ubuntu
advisories | CVE-2020-12762
SHA-256 | 2807edeea9a8f95f742e907a1f8ca749a089935a9eb6c21362d40e5c85bc3305
Ubuntu Security Notice USN-4360-1
Posted May 14, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4360-1 - It was discovered that json-c incorrectly handled certain JSON files. An attacker could possibly use this issue to execute arbitrary code.

tags | advisory, arbitrary
systems | linux, ubuntu
advisories | CVE-2020-12762
SHA-256 | 6ef34fc2a01ad9875697fa9767423e9d76c648b0eae0357fd47a3109b9968d79
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