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CVE-2019-18906

cryptctl: client side password hashing is equivalent to clear text password storage

9.8 CriticalFix available

A Improper Authentication vulnerability in cryptctl of SUSE Linux Enterprise Server for SAP 12-SP5, SUSE Manager Server 4.0 allows attackers with access to the hashed password to use it without having to crack it. This issue affects: SUSE Linux Enterprise Server for SAP 12-SP5 cryptctl versions prior to 2.4. SUSE Manager Server 4.0 cryptctl versions prior to 2.4.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.11%Up 0.7 points since Jun 30, 2021
90%50%10%1%

What each source reports

CVE List Score used 9.8

cryptctl: client side password hashing is equivalent to clear text password storage

A Improper Authentication vulnerability in cryptctl of SUSE Linux Enterprise Server for SAP 12-SP5, SUSE Manager Server 4.0 allows attackers with access to the hashed password to use it without having to crack it. This issue affects: SUSE Linux Enterprise Server for SAP 12-SP5 cryptctl versions prior to 2.4. SUSE Manager Server 4.0 cryptctl versions prior to 2.4.

Record
CVE-2019-18906
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-287
Updated
2026-11-02
EUVDEUVD-2019-8587 9.8

A Improper Authentication vulnerability in cryptctl of SUSE Linux Enterprise Server for SAP 12-SP5, SUSE Manager Server 4.0 allows attackers with access to the hashed password to use it without having to crack it. This issue affects: SUSE Linux Enterprise Server for SAP 12-SP5 cryptctl versions prior to 2.4. SUSE Manager Server 4.0 cryptctl versions prior to 2.4.

Record
EUVD-2019-8587
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-x9cr-r4j4-8ph8 9.8

A Use of Password Hash Instead of Password for Authentication vulnerability in cryptctl of SUSE...

A Use of Password Hash Instead of Password for Authentication vulnerability in cryptctl of SUSE Linux Enterprise Server for SAP 12-SP5, SUSE Manager Server 4.0 allows attackers with access to the hashed password to use it without having to crack it. This issue affects: SUSE Linux Enterprise Server for SAP 12-SP5 cryptctl versions prior to 2.4. SUSE Manager Server 4.0 cryptctl versions prior to 2.4.

Record
GHSA-x9cr-r4j4-8ph8
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-287
Updated
2026-11-02
NVD 9.8

A Improper Authentication vulnerability in cryptctl of SUSE Linux Enterprise Server for SAP 12-SP5, SUSE Manager Server 4.0 allows attackers with access to the hashed password to use it without having to crack it. This issue affects: SUSE Linux Enterprise Server for SAP 12-SP5 cryptctl versions prior to 2.4. SUSE Manager Server 4.0 cryptctl versions prior to 2.4.

Record
CVE-2019-18906
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-287
Updated
2026-11-02
OSVopenSUSE-SU-2021:0907-1 No score

Security update for cryptctl

This update for cryptctl fixes the following issues:

Update to version 2.4:

  • CVE-2019-18906: Client side password hashing was equivalent to clear text password storage (bsc#1186226)
  • First step to use plain text password instead of hashed password.
  • Move repository into the SUSE github organization
  • in RPC server, if client comes from localhost, remember its ipv4 localhost address instead of ipv6 address
  • tell a record to clear expired pending commands upon saving a command result; introduce pending commands RPC test case
  • avoid hard coding 127.0.0.1 in host ID of alive message test; let system administrator mount and unmount disks by issuing these two commands on key server.
Record
openSUSE-SU-2021:0907-1
Updated
2026-11-02
OSVopenSUSE-SU-2021:2136-1 No score

Security update for cryptctl

This update for cryptctl fixes the following issues:

Update to version 2.4:

  • CVE-2019-18906: Client side password hashing was equivalent to clear text password storage (bsc#1186226)
  • First step to use plain text password instead of hashed password.
  • Move repository into the SUSE github organization
  • in RPC server, if client comes from localhost, remember its ipv4 localhost address instead of ipv6 address
  • tell a record to clear expired pending commands upon saving a command result; introduce pending commands RPC test case
  • avoid hard coding 127.0.0.1 in host ID of alive message test; let system administrator mount and unmount disks by issuing these two commands on key server.
Record
openSUSE-SU-2021:2136-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:12078-1 No score

cryptctl-2.4-1.1 on GA media

These are all security issues fixed in the cryptctl-2.4-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:12078-1
Updated
2026-11-02
OSVSUSE-SU-2021:2136-1 No score

Security update for cryptctl

This update for cryptctl fixes the following issues:

Update to version 2.4:

  • CVE-2019-18906: Client side password hashing was equivalent to clear text password storage (bsc#1186226)
  • First step to use plain text password instead of hashed password.
  • Move repository into the SUSE github organization
  • in RPC server, if client comes from localhost, remember its ipv4 localhost address instead of ipv6 address
  • tell a record to clear expired pending commands upon saving a command result; introduce pending commands RPC test case
  • avoid hard coding 127.0.0.1 in host ID of alive message test; let system administrator mount and unmount disks by issuing these two commands on key server.
Record
SUSE-SU-2021:2136-1
Updated
2026-11-02
OSVSUSE-SU-2021:2137-1 No score

Security update for cryptctl

This update for cryptctl fixes the following issues:

Update to version 2.4:

  • CVE-2019-18906: Client side password hashing was equivalent to clear text password storage (bsc#1186226)
  • First step to use plain text password instead of hashed password.
  • Move repository into the SUSE github organization
  • in RPC server, if client comes from localhost, remember its ipv4 localhost address instead of ipv6 address
  • tell a record to clear expired pending commands upon saving a command result; introduce pending commands RPC test case
  • avoid hard coding 127.0.0.1 in host ID of alive message test; let system administrator mount and unmount disks by issuing these two commands on key server.
Record
SUSE-SU-2021:2137-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
cryptctl
SUSE:Linux Enterprise Module for Basesystem 15 SP2
before 2.4-4.5.1
2.4-4.5.1
cryptctl
SUSE:Linux Enterprise Module for Basesystem 15 SP3
before 2.4-4.5.1
2.4-4.5.1
cryptctl
SUSE:Linux Enterprise Module for SAP Applications 15
before 2.4-4.5.1
2.4-4.5.1
cryptctl
SUSE:Linux Enterprise Module for SAP Applications 15 SP1
before 2.4-4.5.1
2.4-4.5.1
cryptctl
SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS
before 2.4-4.5.1
2.4-4.5.1
cryptctl
SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS
before 2.4-4.5.1
2.4-4.5.1
cryptctl
SUSE:Linux Enterprise Server 15 SP1-BCL
before 2.4-4.5.1
2.4-4.5.1
cryptctl
SUSE:Linux Enterprise Server 15 SP1-LTSS
before 2.4-4.5.1
2.4-4.5.1
cryptctl
SUSE:Linux Enterprise Server for SAP Applications 15 SP1
before 2.4-4.5.1
2.4-4.5.1
cryptctl
SUSE:Manager Proxy 4.0
before 2.4-4.5.1
2.4-4.5.1
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Affected packages
PackageAffectedFixed
cryptctl
SUSE:Manager Retail Branch Server 4.0
before 2.4-4.5.1
2.4-4.5.1
cryptctl
SUSE:Manager Server 4.0
before 2.4-4.5.1
2.4-4.5.1
cryptctl
SUSE:Enterprise Storage 6
before 2.4-4.5.1
2.4-4.5.1
cryptctl
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
before 2.4-2.10.1
2.4-2.10.1
cryptctl
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
before 2.4-2.10.1
2.4-2.10.1
cryptctl
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
before 2.4-2.10.1
2.4-2.10.1
cryptctl
SUSE:Linux Enterprise Server 12 SP5
before 2.4-2.10.1
2.4-2.10.1
cryptctl
openSUSE:Leap 15.2
before 2.4-lp152.5.3.1
2.4-lp152.5.3.1
cryptctl
openSUSE:Leap 15.3
before 2.4-4.5.1
2.4-4.5.1
cryptctl
openSUSE:Tumbleweed
before 2.4-1.1
2.4-1.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-18906 is a critical vulnerability (CVSS 9.8) in Opensuse Cryptctl, published June 23, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.11%, the 65th percentile. Fixed in cryptctl 2.4-4.5.1.

References

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