Skip to content
Noroxi
CVE-2019-19783· NVD / CVE Program· CNA mitre

An issue was discovered in Cyrus IMAP before 2.5.15, 3.0.x before 3.0.13, and 3.1.x through 3.1.8.

An issue was discovered in Cyrus IMAP before 2.5.15, 3.0.x before 3.0.13, and 3.1.x through 3.1.8. If sieve script uploading is allowed (3.x) or certain non-default sieve options are enabled (2.x), a user with a mail account on the service can use a sieve script containing a fileinto directive to create any mailbox with administrator privileges, because of folder mishandling in autosieve_createfolder() in imap/lmtp_sieve.c.

MediumCVSS 6.5 · v3.1—No exploit Fix available
Published
Dec 16, 2019
Updated
Jun 16, 2026
EPSS
1.7% · 76th percentile
Follow this CVE

Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.

Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.7%

Affected systems

VendorProduct
cyrusimap
debiandebian linux
fedoraprojectfedora
canonicalubuntu linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • canonical ubuntu linux18.04
  • cyrus imap3.0.0 and later · before 3.0.13
  • cyrus imap3.1.0 and later · before 3.1.8
  • cyrus imap2.5.0 and later · before 2.5.15
  • debian debian linux10.0
  • debian debian linux9.0
  • fedoraproject fedora30
  • fedoraproject fedora31

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:10cyrus-imapdbefore 3.0.8-6+deb10u33.0.8-6+deb10u3
Debian:12cyrus-imapdbefore 3.0.13-13.0.13-1
Debian:9cyrus-imapdbefore 2.5.10-3+deb9u22.5.10-3+deb9u2
openSUSE:Tumbleweedcyrus-imapdbefore 3.8.4-1.13.8.4-1.1
Red Hat:enterprise_linux:8::appstreamcyrus-imapdbefore 0:3.0.7-19.el80:3.0.7-19.el8
Red Hat:enterprise_linux:8::appstreamcyrus-imapd-debuginfobefore 0:3.0.7-19.el80:3.0.7-19.el8
Red Hat:enterprise_linux:8::appstreamcyrus-imapd-debugsourcebefore 0:3.0.7-19.el80:3.0.7-19.el8
Red Hat:enterprise_linux:8::appstreamcyrus-imapd-utilsbefore 0:3.0.7-19.el80:3.0.7-19.el8
Red Hat:enterprise_linux:8::appstreamcyrus-imapd-utils-debuginfobefore 0:3.0.7-19.el80:3.0.7-19.el8
Red Hat:enterprise_linux:8::appstreamcyrus-imapd-vzicbefore 0:3.0.7-19.el80:3.0.7-19.el8
Red Hat:enterprise_linux:8::appstreamcyrus-imapd-vzic-debuginfobefore 0:3.0.7-19.el80:3.0.7-19.el8

Same product

cyrus: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-11356The CalDAV feature in httpd in Cyrus IMAP 2.5.x through 2.5.12 and 3.0.x through 3.0.9 allows remote attackers to execute arbitrary code via
    41Plan
  • CVE-2019-18928Cyrus IMAP 2.5.x before 2.5.14 and 3.x before 3.0.12 allows privilege escalation because an HTTP request may be interpreted in the authentic
    40Plan
  • CVE-2017-14230In the mboxlist_do_find function in imap/mboxlist.c in Cyrus IMAP before 3.0.4, an off-by-one error in prefix calculation for the LIST comma
    37Monitor
  • CVE-2021-33582Cyrus IMAP before 3.4.2 allows remote attackers to cause a denial of service (multiple-minute daemon hang) via input that is mishandled duri
    31Monitor
  • CVE-2015-8078Integer overflow in the index_urlfetch function in imap/index.c in Cyrus IMAP 2.3.19, 2.4.18, and 2.5.6 allows remote attackers to have unsp
    31Monitor
  • CVE-2015-8077Integer overflow in the index_urlfetch function in imap/index.c in Cyrus IMAP 2.3.19, 2.4.18, and 2.5.6 allows remote attackers to have unsp
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:cyrus-imapd3.0.13-1 · Debian:12Package registry (OSV)
opensuse:cyrus-imapd3.8.4-1.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:cyrus-imapd0:3.0.7-19.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:cyrus-imapd-debuginfo0:3.0.7-19.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:cyrus-imapd-debugsource0:3.0.7-19.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:cyrus-imapd-utils0:3.0.7-19.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:cyrus-imapd-utils-debuginfo0:3.0.7-19.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:cyrus-imapd-vzic0:3.0.7-19.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:cyrus-imapd-vzic-debuginfo0:3.0.7-19.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-269 · Improper Privilege Management

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

nvd-primary

Root cause

To simplify setup, a service account is granted broad, cluster-wide permissions. The principle of least privilege is skipped during installation.

The bug in code

The whole CWE-269 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

yaml
kind: ClusterRolerules:  - apiGroups: ["*"]    resources: ["*"]    verbs: ["*"]

Fixed

yaml
kind: Rolemetadata:  namespace: lodos-systemrules:  - apiGroups: ["apps"]    resources: ["deployments"]    verbs: ["get", "list", "update"]

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records