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Critical Severity Vulnerability

This vulnerability has been rated as Critical severity. Immediate action is recommended.

CVE-2016-9843

Critical
Low Medium High Critical
9.8
CVSS Score
Published: May 23, 2017
Last Modified: Apr 20, 2025

Vulnerability Description

The crc32_big function in crc32.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving big-endian CRC calculation.

CVSS Metrics

Common Vulnerability Scoring System

Vector String:

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
N
Attack Complexity
L
Privileges Required
N
User Interaction
N
Scope
U
Confidentiality
H
Integrity
H
Availability
H

Known Affected Software

146 configuration(s) from 7 vendor(s)

iphone_os
Version:
6.1.6
CPE:
cpe:2.3:o:apple:iphone_os:6.1.6:*:*:*:*:*:*:*
iphone_os
Version:
4.2.9
CPE:
cpe:2.3:o:apple:iphone_os:4.2.9:*:*:*:*:*:*:*
iphone_os
Version:
4.2.5
CPE:
cpe:2.3:o:apple:iphone_os:4.2.5:*:*:*:*:*:*:*
iphone_os
Version:
8.1.3
CPE:
cpe:2.3:o:apple:iphone_os:8.1.3:*:*:*:*:*:*:*
iphone_os
Version:
8.0.1
CPE:
cpe:2.3:o:apple:iphone_os:8.0.1:*:*:*:*:*:*:*
iphone_os
Version:
8.3
CPE:
cpe:2.3:o:apple:iphone_os:8.3:*:*:*:*:*:*:*
iphone_os
Version:
1.0.2
CPE:
cpe:2.3:o:apple:iphone_os:1.0.2:-:iphone:*:*:*:*:*
watchos
Version:
2.0
CPE:
cpe:2.3:o:apple:watchos:2.0:*:*:*:*:*:*:*
iphone_os
Version:
10.3.3
CPE:
cpe:2.3:o:apple:iphone_os:10.3.3:*:*:*:*:*:*:*
iphone_os
Version:
8.1.1
CPE:
cpe:2.3:o:apple:iphone_os:8.1.1:*:*:*:*:*:*:*
watchos
Version:
3.2.2
CPE:
cpe:2.3:o:apple:watchos:3.2.2:*:*:*:*:*:*:*
iphone_os
Version:
1.1.0
CPE:
cpe:2.3:o:apple:iphone_os:1.1.0:*:*:*:*:*:*:*
iphone_os
Version:
3.1.1
CPE:
cpe:2.3:o:apple:iphone_os:3.1.1:*:*:*:*:ipod_touch:*:*
iphone_os
Version:
2.1.1
CPE:
cpe:2.3:o:apple:iphone_os:2.1.1:*:*:*:*:*:*:*
iphone_os
Version:
9.3.5
CPE:
cpe:2.3:o:apple:iphone_os:9.3.5:*:*:*:*:*:*:*
iphone_os
Version:
1.0.0
CPE:
cpe:2.3:o:apple:iphone_os:1.0.0:*:*:*:*:*:*:*
iphone_os
Version:
7.0.3
CPE:
cpe:2.3:o:apple:iphone_os:7.0.3:*:*:*:*:*:*:*
iphone_os
Version:
4.3.3
CPE:
cpe:2.3:o:apple:iphone_os:4.3.3:*:*:*:*:*:*:*
watchos
Version:
2.0.1
CPE:
cpe:2.3:o:apple:watchos:2.0.1:*:*:*:*:*:*:*
iphone_os
Version:
7.0.2
CPE:
cpe:2.3:o:apple:iphone_os:7.0.2:*:*:*:*:*:*:*
iphone_os
Version:
2.0.2
CPE:
cpe:2.3:o:apple:iphone_os:2.0.2:-:iphone:*:*:*:*:*
watchos
Version:
3.2.3
CPE:
cpe:2.3:o:apple:watchos:3.2.3:*:*:*:*:*:*:*
iphone_os
Version:
4.3.4
CPE:
cpe:2.3:o:apple:iphone_os:4.3.4:*:*:*:*:*:*:*
iphone_os
Version:
2.1
CPE:
cpe:2.3:o:apple:iphone_os:2.1:-:iphone:*:*:*:*:*
watchos
Version:
3.1.1
CPE:
cpe:2.3:o:apple:watchos:3.1.1:*:*:*:*:*:*:*
watchos
Version:
2.2.1
CPE:
cpe:2.3:o:apple:watchos:2.2.1:*:*:*:*:*:*:*
watchos
Version:
3.0
CPE:
cpe:2.3:o:apple:watchos:3.0:*:*:*:*:*:*:*
iphone_os
Version:
10.3
CPE:
cpe:2.3:o:apple:iphone_os:10.3:*:*:*:*:*:*:*
iphone_os
Version:
10.2.1
CPE:
cpe:2.3:o:apple:iphone_os:10.2.1:*:*:*:*:*:*:*
iphone_os
Version:
7.0.4
CPE:
cpe:2.3:o:apple:iphone_os:7.0.4:*:*:*:*:*:*:*
iphone_os
Version:
1.0.1
CPE:
cpe:2.3:o:apple:iphone_os:1.0.1:-:iphone:*:*:*:*:*
iphone_os
Version:
3.2
CPE:
cpe:2.3:o:apple:iphone_os:3.2:*:*:*:*:*:*:*
iphone_os
Version:
7.0
CPE:
cpe:2.3:o:apple:iphone_os:7.0:*:*:*:*:*:*:*
iphone_os
Version:
3.1.3
CPE:
cpe:2.3:o:apple:iphone_os:3.1.3:-:iphone:*:*:*:*:*
iphone_os
Version:
9.3.1
CPE:
cpe:2.3:o:apple:iphone_os:9.3.1:*:*:*:*:*:*:*
iphone_os
Version:
10.0.3
CPE:
cpe:2.3:o:apple:iphone_os:10.0.3:*:*:*:*:*:*:*
iphone_os
Version:
9.3.2
CPE:
cpe:2.3:o:apple:iphone_os:9.3.2:*:*:*:*:*:*:*
iphone_os
Version:
10.0.2
CPE:
cpe:2.3:o:apple:iphone_os:10.0.2:*:*:*:*:*:*:*
iphone_os
Version:
3.2.2
CPE:
cpe:2.3:o:apple:iphone_os:3.2.2:*:*:*:*:*:*:*
iphone_os
Version:
9.3
CPE:
cpe:2.3:o:apple:iphone_os:9.3:*:*:*:*:*:*:*
iphone_os
Version:
1.1.4
CPE:
cpe:2.3:o:apple:iphone_os:1.1.4:-:iphone:*:*:*:*:*
iphone_os
Version:
2.2
CPE:
cpe:2.3:o:apple:iphone_os:2.2:-:iphone:*:*:*:*:*
iphone_os
Version:
3.2.1
CPE:
cpe:2.3:o:apple:iphone_os:3.2.1:*:*:*:*:*:*:*
watchos
Version:
1.0
CPE:
cpe:2.3:o:apple:watchos:1.0:*:*:*:*:*:*:*
watchos
Version:
3.2
CPE:
cpe:2.3:o:apple:watchos:3.2:*:*:*:*:*:*:*
iphone_os
Version:
8.4
CPE:
cpe:2.3:o:apple:iphone_os:8.4:*:*:*:*:*:*:*
iphone_os
Version:
1.1.2
CPE:
cpe:2.3:o:apple:iphone_os:1.1.2:-:iphone:*:*:*:*:*
watchos
Version:
1.0.1
CPE:
cpe:2.3:o:apple:watchos:1.0.1:*:*:*:*:*:*:*
iphone_os
Version:
10.3.4
CPE:
cpe:2.3:o:apple:iphone_os:10.3.4:*:*:*:*:*:*:*
iphone_os
Version:
10.3.1
CPE:
cpe:2.3:o:apple:iphone_os:10.3.1:*:*:*:*:*:*:*
iphone_os
Version:
5.1.1
CPE:
cpe:2.3:o:apple:iphone_os:5.1.1:*:*:*:*:*:*:*
iphone_os
Version:
5.0
CPE:
cpe:2.3:o:apple:iphone_os:5.0:*:*:*:*:*:*:*
watchos
Version:
3.1.3
CPE:
cpe:2.3:o:apple:watchos:3.1.3:*:*:*:*:*:*:*
iphone_os
Version:
9.3.4
CPE:
cpe:2.3:o:apple:iphone_os:9.3.4:*:*:*:*:*:*:*
iphone_os
Version:
8.2
CPE:
cpe:2.3:o:apple:iphone_os:8.2:*:*:*:*:*:*:*
iphone_os
Version:
6.1.5
CPE:
cpe:2.3:o:apple:iphone_os:6.1.5:*:*:*:*:*:*:*
watchos
Version:
2.2
CPE:
cpe:2.3:o:apple:watchos:2.2:*:*:*:*:*:*:*
iphone_os
Version:
2.2.1
CPE:
cpe:2.3:o:apple:iphone_os:2.2.1:-:iphone:*:*:*:*:*
iphone_os
Version:
9.3.3
CPE:
cpe:2.3:o:apple:iphone_os:9.3.3:*:*:*:*:*:*:*
iphone_os
Version:
8.1.2
CPE:
cpe:2.3:o:apple:iphone_os:8.1.2:*:*:*:*:*:*:*
iphone_os
Version:
6.1.2
CPE:
cpe:2.3:o:apple:iphone_os:6.1.2:*:*:*:*:*:*:*
iphone_os
Version:
7.0.6
CPE:
cpe:2.3:o:apple:iphone_os:7.0.6:*:*:*:*:*:*:*
iphone_os
Version:
8.0
CPE:
cpe:2.3:o:apple:iphone_os:8.0:*:*:*:*:*:*:*
iphone_os
Version:
10.1.1
CPE:
cpe:2.3:o:apple:iphone_os:10.1.1:*:*:*:*:*:*:*
watchos
Version:
2.1
CPE:
cpe:2.3:o:apple:watchos:2.1:*:*:*:*:*:*:*
iphone_os
Version:
9.2
CPE:
cpe:2.3:o:apple:iphone_os:9.2:*:*:*:*:*:*:*
iphone_os
Version:
4.0.1
CPE:
cpe:2.3:o:apple:iphone_os:4.0.1:*:*:*:*:*:*:*
watchos
Version:
2.2.2
CPE:
cpe:2.3:o:apple:watchos:2.2.2:*:*:*:*:*:*:*
watchos
Version:
3.1
CPE:
cpe:2.3:o:apple:watchos:3.1:*:*:*:*:*:*:*
iphone_os
Version:
7.1.2
CPE:
cpe:2.3:o:apple:iphone_os:7.1.2:*:*:*:*:*:*:*
iphone_os
Version:
2.0.1
CPE:
cpe:2.3:o:apple:iphone_os:2.0.1:-:iphone:*:*:*:*:*
iphone_os
Version:
9.0
CPE:
cpe:2.3:o:apple:iphone_os:9.0:*:*:*:*:*:*:*
iphone_os
Version:
4.2.8
CPE:
cpe:2.3:o:apple:iphone_os:4.2.8:*:*:*:*:*:*:*
iphone_os
Version:
4.2
CPE:
cpe:2.3:o:apple:iphone_os:4.2:*:*:*:*:*:*:*
iphone_os
Version:
1.1
CPE:
cpe:2.3:o:apple:iphone_os:1.1:*:*:*:*:*:*:*
iphone_os
Version:
10.2
CPE:
cpe:2.3:o:apple:iphone_os:10.2:*:*:*:*:*:*:*
iphone_os
Version:
9.0.2
CPE:
cpe:2.3:o:apple:iphone_os:9.0.2:*:*:*:*:*:*:*
iphone_os
Version:
9.3.6
CPE:
cpe:2.3:o:apple:iphone_os:9.3.6:*:*:*:*:*:*:*
iphone_os
Version:
1.1.1
CPE:
cpe:2.3:o:apple:iphone_os:1.1.1:-:iphone:*:*:*:*:*
iphone_os
Version:
6.1.4
CPE:
cpe:2.3:o:apple:iphone_os:6.1.4:*:*:*:*:*:*:*
iphone_os
Version:
6.1
CPE:
cpe:2.3:o:apple:iphone_os:6.1:*:*:*:*:*:*:*
iphone_os
Version:
10.0
CPE:
cpe:2.3:o:apple:iphone_os:10.0:*:*:*:*:*:*:*
iphone_os
Version:
6.1.3
CPE:
cpe:2.3:o:apple:iphone_os:6.1.3:*:*:*:*:*:*:*
iphone_os
Version:
4.2.10
CPE:
cpe:2.3:o:apple:iphone_os:4.2.10:*:*:*:*:*:*:*
iphone_os
Version:
9.0.1
CPE:
cpe:2.3:o:apple:iphone_os:9.0.1:*:*:*:*:*:*:*
iphone_os
Version:
4.3.5
CPE:
cpe:2.3:o:apple:iphone_os:4.3.5:*:*:*:*:*:*:*
iphone_os
Version:
7.1.1
CPE:
cpe:2.3:o:apple:iphone_os:7.1.1:*:*:*:*:*:*:*
iphone_os
Version:
4.3.0
CPE:
cpe:2.3:o:apple:iphone_os:4.3.0:*:*:*:*:*:*:*
iphone_os
Version:
4.0.2
CPE:
cpe:2.3:o:apple:iphone_os:4.0.2:*:*:*:*:*:*:*
iphone_os
Version:
8.4.1
CPE:
cpe:2.3:o:apple:iphone_os:8.4.1:*:*:*:*:*:*:*
iphone_os
Version:
9.1
CPE:
cpe:2.3:o:apple:iphone_os:9.1:*:*:*:*:*:*:*
iphone_os
Version:
4.3.1
CPE:
cpe:2.3:o:apple:iphone_os:4.3.1:*:*:*:*:*:*:*
iphone_os
Version:
8.1
CPE:
cpe:2.3:o:apple:iphone_os:8.1:*:*:*:*:*:*:*
iphone_os
Version:
1.0
CPE:
cpe:2.3:o:apple:iphone_os:1.0:*:*:*:*:*:*:*
iphone_os
Version:
3.1
CPE:
cpe:2.3:o:apple:iphone_os:3.1:*:*:*:*:ipod_touch:*:*
iphone_os
Version:
9.2.1
CPE:
cpe:2.3:o:apple:iphone_os:9.2.1:*:*:*:*:*:*:*
iphone_os
Version:
4.2.1
CPE:
cpe:2.3:o:apple:iphone_os:4.2.1:*:*:*:*:*:*:*
iphone_os
Version:
5.0.1
CPE:
cpe:2.3:o:apple:iphone_os:5.0.1:*:*:*:*:*:*:*
iphone_os
Version:
2.0
CPE:
cpe:2.3:o:apple:iphone_os:2.0:*:*:*:*:*:*:*
iphone_os
Version:
1.1.3
CPE:
cpe:2.3:o:apple:iphone_os:1.1.3:-:iphone:*:*:*:*:*
iphone_os
Version:
4.1
CPE:
cpe:2.3:o:apple:iphone_os:4.1:*:*:*:*:*:*:*
iphone_os
Version:
5.1
CPE:
cpe:2.3:o:apple:iphone_os:5.1:*:*:*:*:*:*:*
iphone_os
Version:
3.0
CPE:
cpe:2.3:o:apple:iphone_os:3.0:-:iphone:*:*:*:*:*
iphone_os
Version:
6.0.1
CPE:
cpe:2.3:o:apple:iphone_os:6.0.1:*:*:*:*:*:*:*
iphone_os
Version:
7.0.1
CPE:
cpe:2.3:o:apple:iphone_os:7.0.1:*:*:*:*:*:*:*
iphone_os
Version:
4.3.2
CPE:
cpe:2.3:o:apple:iphone_os:4.3.2:*:*:*:*:*:*:*
iphone_os
Version:
10.0.1
CPE:
cpe:2.3:o:apple:iphone_os:10.0.1:*:*:*:*:*:*:*
iphone_os
Version:
1.1.5
CPE:
cpe:2.3:o:apple:iphone_os:1.1.5:-:iphone:*:*:*:*:*
iphone_os
Version:
4.0
CPE:
cpe:2.3:o:apple:iphone_os:4.0:-:iphone:*:*:*:*:*
iphone_os
Version:
10.3.2
CPE:
cpe:2.3:o:apple:iphone_os:10.3.2:*:*:*:*:*:*:*
iphone_os
Version:
8.0.2
CPE:
cpe:2.3:o:apple:iphone_os:8.0.2:*:*:*:*:*:*:*
iphone_os
Version:
6.0.2
CPE:
cpe:2.3:o:apple:iphone_os:6.0.2:*:*:*:*:*:*:*
iphone_os
Version:
10.1
CPE:
cpe:2.3:o:apple:iphone_os:10.1:*:*:*:*:*:*:*
iphone_os
Version:
2.0.0
CPE:
cpe:2.3:o:apple:iphone_os:2.0.0:*:*:*:*:*:*:*
iphone_os
Version:
3.0.1
CPE:
cpe:2.3:o:apple:iphone_os:3.0.1:-:ipodtouch:*:*:*:*:*
iphone_os
Version:
7.1
CPE:
cpe:2.3:o:apple:iphone_os:7.1:*:*:*:*:*:*:*
iphone_os
Version:
7.0.5
CPE:
cpe:2.3:o:apple:iphone_os:7.0.5:*:*:*:*:*:*:*
iphone_os
Version:
3.1.2
CPE:
cpe:2.3:o:apple:iphone_os:3.1.2:-:iphone:*:*:*:*:*
iphone_os
Version:
4.2.6
CPE:
cpe:2.3:o:apple:iphone_os:4.2.6:*:*:*:*:*:*:*
iphone_os
Version:
6.0
CPE:
cpe:2.3:o:apple:iphone_os:6.0:*:*:*:*:*:*:*
iphone_os
Version:
4.2.7
CPE:
cpe:2.3:o:apple:iphone_os:4.2.7:*:*:*:*:*:*:*
ubuntu_linux
Version:
16.04
CPE:
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:*:*:*:*
ubuntu_linux
Version:
18.04
CPE:
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:esm:*:*:*
debian_linux
Version:
8.0
CPE:
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
oncommand_workflow_automation
Version:
-
CPE:
cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*
snapcenter
Version:
-
CPE:
cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*
oncommand_insight
Version:
-
CPE:
cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*
opensuse
Version:
13.2
CPE:
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
leap
Version:
42.1
CPE:
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
leap
Version:
42.2
CPE:
cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*
jdk
Version:
1.6.0
CPE:
cpe:2.3:a:oracle:jdk:1.6.0:update8:*:*:*:*:*:*
database_server
Version:
18c
CPE:
cpe:2.3:a:oracle:database_server:18c:*:*:*:*:*:*:*
jdk
Version:
1.7.0
CPE:
cpe:2.3:a:oracle:jdk:1.7.0:update343_b31:*:*:*:*:*:*
jdk
Version:
1.8.0
CPE:
cpe:2.3:a:oracle:jdk:1.8.0:update441:*:*:-:*:*:*
jre
Version:
1.6.0
CPE:
cpe:2.3:a:oracle:jre:1.6.0:update101:*:*:-:*:*:*
jre
Version:
1.7.0
CPE:
cpe:2.3:a:oracle:jre:1.7.0:update261:*:*:*:*:*:*
jre
Version:
1.8.0
CPE:
cpe:2.3:a:oracle:jre:1.8.0:update441:*:*:-:*:*:*
enterprise_linux_eus
Version:
7.5
CPE:
cpe:2.3:o:redhat:enterprise_linux_eus:7.5:*:*:*:*:*:*:*
enterprise_linux_workstation
Version:
7.0
CPE:
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:x64:*
enterprise_linux_server
Version:
6.0
CPE:
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:x86:*
satellite
Version:
5.8
CPE:
cpe:2.3:a:redhat:satellite:5.8:*:*:*:*:*:*:*
enterprise_linux_server
Version:
7.0
CPE:
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:x64:*
enterprise_linux_eus
Version:
7.4
CPE:
cpe:2.3:o:redhat:enterprise_linux_eus:7.4:*:*:*:*:*:*:*
enterprise_linux_desktop
Version:
7.0
CPE:
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:x64:*
enterprise_linux_desktop
Version:
6.0
CPE:
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:x64:*
enterprise_linux_workstation
Version:
6.0
CPE:
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:x86:*
This vulnerability affects 146 software configuration(s). Ensure you patch all affected systems.

Available Security Patches

2 patches available from vendors

View All Patches
Canonical (Ubuntu)

USN-7959-1

USN-7959-1: klibc vulnerabilities

Severity
Unknown
Released
Jan 14, 2026
Security Update
Microsoft

2025-Mar-CVE-2016-9843

CVE-2016-9843: None

Severity
Unknown
Released
Sep 04, 2025
Security Update

References & Resources

Severity Details

9.8
out of 10.0
Critical

Key Information

Published Date
May 23, 2017