CVE-2016-9843

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.

9.8

CVSS

Severity: Critical

CVSS 3.1 •

CVSS 2.0 •

EPSS 9.23% Top 10%

Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory gentoo.org

Affected: n/a n/a

References

Link	Tags
https://access.redhat.com/errata/RHSA-2017:1221	vendor advisory
https://access.redhat.com/errata/RHSA-2017:1220	vendor advisory
https://access.redhat.com/errata/RHSA-2017:3047	vendor advisory
http://www.openwall.com/lists/oss-security/2016/12/05/21	mailing list
http://www.securityfocus.com/bid/95131	vdb entry
http://www.securitytracker.com/id/1041888	vdb entry
https://access.redhat.com/errata/RHSA-2017:3046	vendor advisory
http://lists.opensuse.org/opensuse-updates/2017-01/msg00050.html	vendor advisory
https://security.gentoo.org/glsa/201701-56	vendor advisory
http://www.securitytracker.com/id/1039427	vdb entry
https://access.redhat.com/errata/RHSA-2017:1222	vendor advisory
http://lists.opensuse.org/opensuse-updates/2017-01/msg00053.html	vendor advisory
https://access.redhat.com/errata/RHSA-2017:3453	vendor advisory
http://lists.opensuse.org/opensuse-updates/2016-12/msg00127.html	vendor advisory
https://access.redhat.com/errata/RHSA-2017:2999	vendor advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00027.html	mailing list
https://usn.ubuntu.com/4246-1/	vendor advisory
https://lists.debian.org/debian-lts-announce/2020/01/msg00030.html	mailing list
https://usn.ubuntu.com/4292-1/	vendor advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
https://www.oracle.com/security-alerts/cpujul2020.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
https://support.apple.com/HT208144
https://wiki.mozilla.org/MOSS/Secure_Open_Source/Completed#zlib
https://support.apple.com/HT208113
https://support.apple.com/HT208112
https://support.apple.com/HT208115
https://wiki.mozilla.org/images/0/09/Zlib-report.pdf
https://github.com/madler/zlib/commit/d1d577490c15a0c6862473d7576352a9f18ef811
https://bugzilla.redhat.com/show_bug.cgi?id=1402351
https://security.netapp.com/advisory/ntap-20181018-0002/
https://security.gentoo.org/glsa/202007-54	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-9843?: CVE-2016-9843 has been scored as a critical severity vulnerability.
How to fix CVE-2016-9843?: To fix CVE-2016-9843, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-9843 being actively exploited in the wild?: It is possible that CVE-2016-9843 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~9% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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