CVE-2016-9840
HIGHCVSS 8.8/10EPSS 4.79%
Last modified
CVE-2016-9840 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. inftrees.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.. EPSS estimates a 4.79% chance of exploitation in the next 30 days.
Description
inftrees.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.
Metrics
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Boost | Boost | < 1.78.0 | — |
| Zlib | Zlib | >= 1.2.0.6, < 1.2.9 | — |
| Opensuse | Leap | 42.1 | — |
| Opensuse | Leap | 42.2 | — |
| Opensuse | Opensuse | 13.2 | — |
| Debian | Debian Linux | 8.0 | — |
| Canonical | Ubuntu Linux | 16.04 | — |
| Canonical | Ubuntu Linux | 18.04 | — |
| Oracle | Database Server | 18c | — |
| Oracle | Jdk | 1.6.0 | Update161 |
| Oracle | Jdk | 1.7.0 | Update151 |
| Oracle | Jdk | 1.8.0 | Update144 |
| Oracle | Jre | 1.6.0 | Update161 |
| Oracle | Jre | 1.7.0 | Update151 |
| Oracle | Jre | 1.8.0 | Update144 |
| Oracle | Mysql | >= 5.5.0, <= 5.5.61 | — |
| Oracle | Mysql | >= 5.6.0, <= 5.6.41 | — |
| Oracle | Mysql | >= 5.7.0, <= 5.7.23 | — |
| Oracle | Mysql | >= 8.0.0, <= 8.0.12 | — |
| Redhat | Satellite | 5.8 | — |
| Redhat | Enterprise Linux Desktop | 6.0 | — |
| Redhat | Enterprise Linux Desktop | 7.0 | — |
| Redhat | Enterprise Linux Eus | 7.4 | — |
| Redhat | Enterprise Linux Eus | 7.5 | — |
| Redhat | Enterprise Linux Server | 6.0 | — |
| Redhat | Enterprise Linux Server | 7.0 | — |
| Redhat | Enterprise Linux Workstation | 6.0 | — |
| Redhat | Enterprise Linux Workstation | 7.0 | — |
| Apple | Iphone Os | < 11 | — |
| Apple | Mac Os X | >= 10.0.0, < 10.13.0 | — |
| Apple | Tvos | < 11.0 | — |
| Apple | Watchos | < 4 | — |
| Nodejs | Node.Js | >= 4.0.0, <= 4.1.2 | — |
| Nodejs | Node.Js | >= 4.2.0, < 4.8.2 | — |
| Nodejs | Node.Js | >= 6.0.0, <= 6.8.1 | — |
| Nodejs | Node.Js | >= 6.9.0, < 6.10.2 | — |
| Nodejs | Node.Js | >= 7.0.0, < 7.6.0 | — |
References
- https://lists.opensuse.org/opensuse-updates/2016-12/msg00127.htmlThird Party Advisory
- https://lists.opensuse.org/opensuse-updates/2017-01/msg00050.htmlThird Party Advisory
- https://lists.opensuse.org/opensuse-updates/2017-01/msg00053.htmlThird Party Advisory
- https://www.openwall.com/lists/oss-security/2016/12/05/21Mailing List, Third Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlThird Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.htmlThird Party Advisory
- https://www.securityfocus.com/bid/95131Broken Link
- https://www.securitytracker.com/id/1039427Broken Link
- https://access.redhat.com/errata/RHSA-2017:1220Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1221Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1222Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2999Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:3046Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:3047Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:3453Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1402345Issue Tracking, Third Party Advisory
- https://github.com/madler/zlib/commit/6a043145ca6e9c55184013841a67b2fef87e44c0Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00027.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/01/msg00030.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201701-56Third Party Advisory
- https://security.gentoo.org/glsa/202007-54Third Party Advisory
- https://support.apple.com/HT208112Third Party Advisory
- https://support.apple.com/HT208113Third Party Advisory
- https://support.apple.com/HT208115Third Party Advisory
- https://support.apple.com/HT208144Third Party Advisory
- https://usn.ubuntu.com/4246-1/Third Party Advisory
- https://usn.ubuntu.com/4292-1/Third Party Advisory
- https://wiki.mozilla.org/MOSS/Secure_Open_Source/Completed#zlibThird Party Advisory
- https://www.oracle.com/security-alerts/cpujul2020.htmlThird Party Advisory
- https://lists.opensuse.org/opensuse-updates/2016-12/msg00127.htmlThird Party Advisory
- https://lists.opensuse.org/opensuse-updates/2017-01/msg00050.htmlThird Party Advisory
- https://lists.opensuse.org/opensuse-updates/2017-01/msg00053.htmlThird Party Advisory
- https://www.openwall.com/lists/oss-security/2016/12/05/21Mailing List, Third Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlThird Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.htmlThird Party Advisory
- https://www.securityfocus.com/bid/95131Broken Link
- https://www.securitytracker.com/id/1039427Broken Link
- https://access.redhat.com/errata/RHSA-2017:1220Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1221Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1222Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2999Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:3046Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:3047Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:3453Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1402345Issue Tracking, Third Party Advisory
- https://github.com/madler/zlib/commit/6a043145ca6e9c55184013841a67b2fef87e44c0Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00027.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/01/msg00030.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201701-56Third Party Advisory
- https://security.gentoo.org/glsa/202007-54Third Party Advisory
- https://support.apple.com/HT208112Third Party Advisory
- https://support.apple.com/HT208113Third Party Advisory
- https://support.apple.com/HT208115Third Party Advisory
- https://support.apple.com/HT208144Third Party Advisory
- https://usn.ubuntu.com/4246-1/Third Party Advisory
- https://usn.ubuntu.com/4292-1/Third Party Advisory
- https://wiki.mozilla.org/MOSS/Secure_Open_Source/Completed#zlibThird Party Advisory
- https://www.oracle.com/security-alerts/cpujul2020.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-9840?
inftrees.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.
How severe is CVE-2016-9840?
CVE-2016-9840 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 4.79% probability of exploitation in the next 30 days.
How do I fix CVE-2016-9840?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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