Description
The hash functionality in json-c before 0.12 allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted JSON data, involving collisions.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | json-c | 0.11-4 | — |
| Debian 13 | json-c | 0.11-4 | — |
| Debian 12 | json-c | 0.11-4 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | json-c | 0.11-3ubuntu1.2 | USN-2245-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | json-c +2 | 0.11-4.el7_0 | RHSA-2014:0703 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | json-c | 0.12.1-1.3 | openSUSE-SU-2026:11188-1, openSUSE-SU-2024:10013-1 |
| openSUSE Tumbleweed | rsyslog | 8.23.0-2.1 | openSUSE-SU-2024:10498-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | json-c +2 | 0.11-4.el7_0 | ELSA-2014-0703 |
Advisories 7
- WID-SEC-2026-2226 Red Hat Enterprise Linux: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Jul 7, 2026
- openSUSE-SU-2026:11188-1 json-c-devel-0.19-1.1 on GA media SUSE / openSUSE Security Updates · Jul 7, 2026
- RHSA-2014:0703 Red Hat Security Advisory: json-c security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-2245-1 json-c vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2024:10013-1 libjson-c-devel-0.12.1-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10498-1 rsyslog-8.23.0-2.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ELSA-2014-0703 Moderate: json-c security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 23, 2014
References
- MDVSA-2014:079 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1032311
- jsonc-cve20136371-dos(92541) vdb-entry
- 57791 third-party-advisory
- 66715 vdb-entry
- FEDORA-2014-5006 vendor-advisory
- https://github.com/json-c/json-c/commit/64e36901a0614bf64a19bc3396469c66dcd0b015
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html