CVE catalog
CVE-2016-4303
iperf3: CVE-2016-4303
- Severity
- Critical · CVSS 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 6.96% · Oct 25, 2026
The parse_string function in cjson.c in the cJSON library mishandles UTF8/16 strings, which allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a non-hex character in a JSON string, which triggers a heap-based buffer overflow.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | iperf3 | sid | 3.22-0.1 | fixed |
| Debian | iperf3 | forky | 3.22-0.1 | fixed |
| Debian | iperf3 | trixie | 3.18-2+deb13u2 | fixed |
| Debian | iperf3 | bookworm | 3.12-1+deb12u2 | fixed |
| Debian | iperf3 | bookworm-security | 3.12-1+deb12u1 | fixed |
| Ubuntu | iperf3 | pro | 3.0.11-1 | vulnerable |
| Ubuntu | iperf3 | pro | 3.0.11-1ubuntu0.1~esm1 | fixed |
| Ubuntu | iperf3 | pro | 3.0.11-1 | vulnerable |
| Ubuntu | iperf3 | pro | 3.0.11-1ubuntu0.1~esm1 | fixed |
| Opensuse | iperf | tumbleweed | 3.1.3-1.3 | fixed |
| Suse | iperf | package hub 12 | 3.1.3-6.1 | fixed |
| Suse | iperf | package hub 12 | 3.1.3-6.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | iperf3 | source | sid | 3.1.3-1 | not yet assigned | Not reported | [827116] |
| Debian | iperf3 | source | forky | 3.1.3-1 | not yet assigned | Not reported | [827116] |
| Debian | iperf3 | source | trixie | 3.1.3-1 | not yet assigned | Not reported | [827116] |
| Debian | iperf3 | source | bookworm | 3.1.3-1 | not yet assigned | Not reported | [827116] |
| Ubuntu | iperf3 | deb | pro | 3.0.11-1ubuntu0.1~esm1 | Not reported | USN-4788-1 | Not reported |
| Ubuntu | iperf3 | deb | pro | 3.0.11-1ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2016-4303 | Not reported |
| Opensuse | iperf | rpm | tumbleweed | 3.1.3-1.3 | Not reported | OPENSUSE-SU-2024:10145-1 | Not reported |
| Suse | iperf | rpm | package hub 12 | 3.1.3-6.1 | Not reported | OPENSUSE-SU-2016:2113-1 | Not reported |
| Suse | iperf | rpm | package hub 12 | 3.1.3-6.1 | Not reported | OPENSUSE-SU-2016:2121-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [iperf-devel]Unknown
Source package: [iperf]
Details (1)
3.21-1.4· x86_64 · tumbleweedUnknown · Fixed:
3.1.3-1.3Version impact unknown
dsa · iperf · opensuse · tumbleweed
- [libiperf0]Unknown
Source package: [iperf]
Details (1)
3.21-1.4· x86_64 · tumbleweedUnknown · Fixed:
3.1.3-1.3Version impact unknown
dsa · iperf · opensuse · tumbleweed
- [iperf]Fixed
Source package: [iperf]
Details (1)
3.21-1.4· x86_64 · tumbleweedFixed · Fixed:
3.1.3-1.3dsa · iperf · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [iperf3]Fixed
Details (4)
3.12-1+deb12u2· amd64 · bookwormFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · bookworm; dsa · iperf3 · debian · 12
3.12-1+deb12u2· arm64 · bookwormFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · bookworm; dsa · iperf3 · debian · 12
3.12-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · bookworm; dsa · iperf3 · debian · 12
3.12-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · bookworm; dsa · iperf3 · debian · 12
- [libiperf0]Fixed
Source package: [iperf3]
Details (4)
3.12-1+deb12u2· amd64 · bookwormFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · bookworm; dsa · iperf3 · debian · 12
3.12-1+deb12u2· arm64 · bookwormFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · bookworm; dsa · iperf3 · debian · 12
3.12-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · bookworm; dsa · iperf3 · debian · 12
3.12-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · bookworm; dsa · iperf3 · debian · 12
- [libiperf-dev]Fixed
Source package: [iperf3]
Details (4)
3.12-1+deb12u2· amd64 · bookwormFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · bookworm; dsa · iperf3 · debian · 12
3.12-1+deb12u2· arm64 · bookwormFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · bookworm; dsa · iperf3 · debian · 12
3.12-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · bookworm; dsa · iperf3 · debian · 12
3.12-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · bookworm; dsa · iperf3 · debian · 12
[Debian 13 (Trixie)]
- [iperf3]Fixed
Details (2)
3.18-2+deb13u2· amd64 · trixieFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · 13
3.18-2+deb13u2· arm64 · trixieFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · 13
- [libiperf0]Fixed
Source package: [iperf3]
Details (2)
3.18-2+deb13u2· amd64 · trixieFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · 13
3.18-2+deb13u2· arm64 · trixieFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · 13
- [libiperf-dev]Fixed
Source package: [iperf3]
Details (2)
3.18-2+deb13u2· amd64 · trixieFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · 13
3.18-2+deb13u2· arm64 · trixieFixed · Fixed:
3.1.3-1dsa · iperf3 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2016_2113-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2016-4303]
- [https://osv.dev/vulnerability/DLA-2080-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2016-4303]
- [https://osv.dev/vulnerability/USN-4788-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2016:2113-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2016:2121-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:10145-1]
- [https://security-tracker.debian.org/tracker/CVE-2016-4303]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]