synced 5 MIN AGO
01 Record

CVE-2023-5678

Excessive time spent in DH check / generation with large Q parameter value

MediumPUBLISHEDCNA: openssl
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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02 Description

Excessive time spent in DH check / generation with large Q parameter value

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
4.45% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 91.0% of scored records. A rank, not a probability.
NVD base score
5.3 (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:L
NVD analysis status
Modified. NVD last modified this record on 2026-10-14.
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
2023-11-06 15:47Z2 YR AGO
Last updated
2026-10-14 22:03Z14 DAYS AGO
Reserved
2023-10-20
Assigning CNA
openssl
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
  • CWE-606Unchecked Input for Loop ConditionBase
  • CWE-754Improper Check for Unusual or Exceptional ConditionsClass
  • CWE-325Missing Cryptographic StepBase
Data version
5.2
Document digest
18bbc06c58d42ab3e7a02c7f12e7d2b9a837c8360d925e4f52a502557d1cec63

05 Affected products

VendorProductVersionsPlatforms
OpenSSLOpenSSL1.0.2 to < 1.0.2zj, 1.1.1 to < 1.1.1x, 3.0.0 to < 3.0.13, 3.1.0 to < 3.1.5—

06 References

07 Fixed in

AlmaLinux 8

  • openssl
    Fixed in 1:1.1.1k-12.el8_9
  • openssl-devel
    Fixed in 1:1.1.1k-12.el8_9
  • openssl-libs
    Fixed in 1:1.1.1k-12.el8_9
  • openssl-perl
    Fixed in 1:1.1.1k-12.el8_9

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

AlmaLinux 9

  • openssl
    Fixed in 1:3.0.7-27.el9
  • openssl-devel
    Fixed in 1:3.0.7-27.el9
  • openssl-libs
    Fixed in 1:3.0.7-27.el9
  • openssl-perl
    Fixed in 1:3.0.7-27.el9

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

CloudLinux 8

  • openssl
    Fixed in 1:1.1.1k-12.el8_9
  • openssl-devel
    Fixed in 1:1.1.1k-12.el8_9
  • openssl-libs
    Fixed in 1:1.1.1k-12.el8_9
  • openssl-perl
    Fixed in 1:1.1.1k-12.el8_9

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

  • openssl
    Fixed in 1:3.0.7-27.el9
  • openssl-devel
    Fixed in 1:3.0.7-27.el9
  • openssl-libs
    Fixed in 1:3.0.7-27.el9
  • openssl-perl
    Fixed in 1:3.0.7-27.el9

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

  • openssl
    Fixed in 3.0.13-1~deb12u1

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

Debian 13

  • openssl
    Fixed in 3.0.12-2

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

Debian 14

  • openssl
    Fixed in 3.0.12-2

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

Ubuntu 20.04 LTS

  • openssl
    Fixed in 1.1.1f-1ubuntu2.21

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

Ubuntu 22.04 LTS

  • edk2
    Fixed in 2022.02-3ubuntu0.22.04.4
  • openssl
    Fixed in 3.0.2-0ubuntu1.14

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

Ubuntu 24.04 LTS

  • edk2
    Fixed in 2024.02-2ubuntu0.6
  • openssl
    Fixed in 3.0.10-1ubuntu4

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

Ubuntu Pro 16.04 LTS

  • edk2
    No fix yet
  • openssl
    Fixed in 1.0.2g-1ubuntu4.20+esm11
    Available 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

  • edk2
    No fix yet
  • openssl
    Fixed in 1.1.1-1ubuntu2.1~18.04.23+esm4
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • openssl1.0
    Fixed in 1.0.2n-1ubuntu5.13+esm1
    Available 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 20.04 LTS

  • edk2
    No fix yet

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

Ubuntu Pro 22.04 LTS

  • nodejs
    No fix yet

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

Ubuntu Pro FIPS-preview 22.04 LTS

  • openssl
    No fix yet

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

Ubuntu Pro FIPS-updates 16.04 LTS

  • openssl
    Fixed in 1.0.2g-1ubuntu4.fips.4.20.11
    Available with Ubuntu Pro: 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 FIPS-updates 18.04 LTS

  • openssl
    Fixed in 1.1.1-1ubuntu2.fips.2.1~18.04.23.4
    Available with Ubuntu Pro: 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 FIPS-updates 20.04 LTS

  • openssl
    Fixed in 1.1.1f-1ubuntu2.fips.21
    Available with Ubuntu Pro: 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 FIPS-updates 22.04 LTS

  • openssl
    Fixed in 3.0.2-0ubuntu1.14+Fips1
    Available with Ubuntu Pro: 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 FIPS 16.04 LTS

  • openssl
    No fix yet

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

Ubuntu Pro FIPS 18.04 LTS

  • openssl
    No fix yet

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

Ubuntu Pro FIPS 20.04 LTS

  • openssl
    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.