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01 Record

CVE-2024-23185

Very large headers can cause resource exhaustion when parsing message. The message-parser normally reads reasonably sized chunks of the message. However, when it feeds them to message-header-parser,

HighPUBLISHEDCNA: OX
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
View raw JSON

02 Description

Very large headers can cause resource exhaustion when parsing message. The message-parser normally reads reasonably sized chunks of the message. However, when it feeds them to message-header-parser,

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 ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.29% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 69.7% of scored records. A rank, not a probability.
NVD base score
7.5 (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:N/I:N/A:H
NVD analysis status
Deferred. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. 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
2024-09-10 14:38Z2 YR AGO
Last updated
2025-11-04 16:11Z11 MO AGO
Reserved
2024-01-12
Assigning CNA
OX
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-770Allocation of Resources Without Limits or ThrottlingBase
Data version
5.2
Document digest
e4e873175c80799cc95c63dc5509984192b72bec90c1c01c71f36ebbd3851dec

05 Affected products

VendorProductVersionsPlatforms
Open-Xchange GmbHOX Dovecot Pro0 to 2.3.21—
open-xchangeox_dovecot_pro0 to 2.3.21—

06 References

07 Fixed in

AlmaLinux 8

  • dovecot
    Fixed in 1:2.3.16-6.el8_10
  • dovecot-devel
    Fixed in 1:2.3.16-6.el8_10
  • dovecot-mysql
    Fixed in 1:2.3.16-6.el8_10
  • dovecot-pgsql
    Fixed in 1:2.3.16-6.el8_10
  • dovecot-pigeonhole
    Fixed in 1:2.3.16-6.el8_10

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • dovecot
    Fixed in 1:2.3.16-11.el9_4.1
  • dovecot-devel
    Fixed in 1:2.3.16-11.el9_4.1
  • dovecot-mysql
    Fixed in 1:2.3.16-11.el9_4.1
  • dovecot-pgsql
    Fixed in 1:2.3.16-11.el9_4.1
  • dovecot-pigeonhole
    Fixed in 1:2.3.16-11.el9_4.1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • dovecot
    Fixed in 1:2.3.16-6.el8_10
  • dovecot-devel
    Fixed in 1:2.3.16-6.el8_10
  • dovecot-mysql
    Fixed in 1:2.3.16-6.el8_10
  • dovecot-pgsql
    Fixed in 1:2.3.16-6.el8_10
  • dovecot-pigeonhole
    Fixed in 1:2.3.16-6.el8_10

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • dovecot
    Fixed in 1:2.3.16-11.el9_4.1
  • dovecot-devel
    Fixed in 1:2.3.16-11.el9_4.1
  • dovecot-mysql
    Fixed in 1:2.3.16-11.el9_4.1
  • dovecot-pgsql
    Fixed in 1:2.3.16-11.el9_4.1
  • dovecot-pigeonhole
    Fixed in 1:2.3.16-11.el9_4.1

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • dovecot
    Fixed in 1:2.3.19.1+dfsg1-2.1+deb12u1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • dovecot
    Fixed in 1:2.3.21.1+dfsg1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • dovecot
    Fixed in 1:2.3.21.1+dfsg1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • dovecot
    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

  • dovecot
    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

  • dovecot
    Fixed in 1:2.3.7.2-1ubuntu3.7

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • dovecot
    Fixed in 1:2.3.16+dfsg1-3ubuntu2.4

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • dovecot
    Fixed in 1:2.3.21+dfsg1-2ubuntu6

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • dovecot
    No fix yet

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.