CVE-2016-9841
inffast.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.
02 Description
inffast.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 7.55% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 94.4% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-10-08.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2017-05-23 03:56Z9 YR AGO
- Last updated
- 2026-10-08 21:13Z20 DAYS AGO
- Reserved
- 2016-12-05
- Assigning CNA
- microfocus
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- No CWE assigned
- Data version
- 5.2
- Document digest
- d00a032b6d1c51246b729063ba8f2f55c9c1094040350847c95a8b6ace9cb1ee
05 Affected products
06 References
- access.redhat.comRHSA-2017:1221https://access.redhat.com/errata/RHSA-2017:1221
- access.redhat.comRHSA-2017:1220https://access.redhat.com/errata/RHSA-2017:1220
- access.redhat.comRHSA-2017:3047https://access.redhat.com/errata/RHSA-2017:3047
- www.openwall.com[oss-security] 20161205 Re: CVE Request: zlib security issues found during audithttp://www.openwall.com/lists/oss-security/2016/12/05/21
- www.securityfocus.com95131http://www.securityfocus.com/bid/95131
- access.redhat.comRHSA-2017:3046https://access.redhat.com/errata/RHSA-2017:3046
- lists.opensuse.orgopenSUSE-SU-2017:0077http://lists.opensuse.org/opensuse-updates/2017-01/msg00050.html
- www.securitytracker.com1039596http://www.securitytracker.com/id/1039596
- security.gentoo.orgGLSA-201701-56https://security.gentoo.org/glsa/201701-56
- www.securitytracker.com1039427http://www.securitytracker.com/id/1039427
- access.redhat.comRHSA-2017:1222https://access.redhat.com/errata/RHSA-2017:1222
- lists.opensuse.orgopenSUSE-SU-2017:0080http://lists.opensuse.org/opensuse-updates/2017-01/msg00053.html
- access.redhat.comRHSA-2017:3453https://access.redhat.com/errata/RHSA-2017:3453
- lists.opensuse.orgopenSUSE-SU-2016:3202http://lists.opensuse.org/opensuse-updates/2016-12/msg00127.html
- access.redhat.comRHSA-2017:2999https://access.redhat.com/errata/RHSA-2017:2999
- lists.debian.org[debian-lts-announce] 20190324 [SECURITY] [DLA 1725-1] rsync security updatehttps://lists.debian.org/debian-lts-announce/2019/03/msg00027.html
- usn.ubuntu.comUSN-4246-1https://usn.ubuntu.com/4246-1/
- lists.debian.org[debian-lts-announce] 20200129 [SECURITY] [DLA 2085-1] zlib security updatehttps://lists.debian.org/debian-lts-announce/2020/01/msg00030.html
- usn.ubuntu.comUSN-4292-1https://usn.ubuntu.com/4292-1/
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2020.html
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- support.apple.comhttps://support.apple.com/HT208144
- wiki.mozilla.orghttps://wiki.mozilla.org/MOSS/Secure_Open_Source/Completed#zlib
- support.apple.comhttps://support.apple.com/HT208113
- support.apple.comhttps://support.apple.com/HT208112
- support.apple.comhttps://support.apple.com/HT208115
- wiki.mozilla.orghttps://wiki.mozilla.org/images/0/09/Zlib-report.pdf
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1402346
- github.comhttps://github.com/madler/zlib/commit/9aaec95e82117c1cb0f9624264c3618fc380cecb
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20171019-0001/
- security.gentoo.orgGLSA-202007-54https://security.gentoo.org/glsa/202007-54
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-470355.html
07 Fixed in
Debian 12
- rsync Fixed in 3.1.3-6
- zlib Fixed in 1:1.2.8.dfsg-4
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- rsync Fixed in 3.1.3-6
- zlib Fixed in 1:1.2.8.dfsg-4
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- rsync Fixed in 3.1.3-6
- zlib Fixed in 1:1.2.8.dfsg-4
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- rsync Fixed in 3.1.1-3ubuntu1.3
- zlib Fixed in 1:1.2.8.dfsg-2ubuntu4.3
- zsync No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- rsync Fixed in 3.1.2-2.1ubuntu1.1
- zsync No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- klibc Fixed in 2.0.7-1ubuntu5.2
- rsync Fixed in 3.1.3-6
- zsync No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- klibc Fixed in 2.0.10-4ubuntu0.1
- zsync No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- klibc Fixed in 2.0.13-4ubuntu0.1
- zsync No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 25.10
- klibc Fixed in 2.0.13-4ubuntu1
- zsync No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.04 LTS
- zsync No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.10
- zsync No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- klibc Fixed in 2.0.3-0ubuntu1.14.04.3+esm3Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- zlib No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- klibc Fixed in 2.0.4-8ubuntu1.16.04.4+esm2Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- klibc Fixed in 2.0.4-9ubuntu2.2+esm1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.