CVE-2016-4983 json
A postinstall script in the dovecot rpm allows local users to read the contents of newly created SSL/TLS key files.
published 2019-11-05 7 y ago modified 2026-06-17 4 mo ago also EUVD-2016-5951
- cvss
- 3.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 34%
- public exploits
- 0
- none known
Summary
A postinstall script in the dovecot rpm allows local users to read the contents of newly created SSL/TLS key files.
Patch / fix
- dovecot22 SLES for SAP 12 SP2, SLES for SAP 12 SP1, SLES for Raspberry Pi 12 SP2 +4 more 2.2.13-4.1
suse advisories SUSE-SU-2016:2915-1
- dovecot22 openSUSE Tumbleweed 2.2.27-1.1
opensuse advisories openSUSE-SU-2024:10158-1
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2016-4983 updated cvss 2.5
dovecot insecure SSL/TLS key and certificate file creation
-
Red Hat Enterprise Linux 4 dovecot Red Hat Enterprise Linux 5 dovecot Red Hat Enterprise Linux 6 dovecot, dovecot-mysql, dovecot-pgsql, dovecot-pigeonhole Red Hat Enterprise Linux 7 dovecot, dovecot-mysql, dovecot-pgsql, dovecot-pigeonholeaffected: no fix planned “Will not fix”
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugzilla.suse.com https://bugzilla.suse.com/show_bug.cgi?id=984639 referenced PoC, tagged "exploit" by a source, unverified
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1346055 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- Fedora dovecot22
Classification
- Weakness
-
- CWE-732 Incorrect Permission Assignment for Critical Resource
References
-
bugzilla.suse.com
/show_bug.cgi?id=984639
exploit, issue-tracking, third-party-advisory
-
bugzilla.redhat.com
/show_bug.cgi?id=1346055
exploit, issue-tracking, third-party-advisory
-
lists.opensuse.org
/opensuse-updates/2016-11/msg00096.html
mailing-list, third-party-advisory
Sources
- CVE List CVE-2016-4983
- NVD CVE-2016-4983
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.