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CVE-2021-45083

Incorrect Default Permissions in Cobbler

7.1 HighFix available

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
None

Exploit likelihood

0.31%Down 0.6 points since Feb 21, 2022
90%50%10%1%

What each source reports

NVD Score used 7.1

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.

Record
CVE-2021-45083
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0
3.6 LowAV:L/AC:L/Au:N/C:P/I:P/A:N
Weakness
CWE-276
Updated
2026-11-02
CVE List No score

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.

Record
CVE-2021-45083
Updated
2026-11-02
EUVDEUVD-2022-0041 No score

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.

Record
EUVD-2022-0041
Updated
2026-11-03
GitHub AdvisoriesGHSA-5946-mpw5-pqxx 8.6

Incorrect Default Permissions in Cobbler

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.

Record
GHSA-5946-mpw5-pqxx
CVSS 4.0
8.6 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-276
Updated
2026-11-02
OSV 7.1

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.

Record
CVE-2021-45083
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSVGHSA-5946-mpw5-pqxx 8.6

Incorrect Default Permissions in Cobbler

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.

Record
GHSA-5946-mpw5-pqxx
CVSS 4.0
8.6 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-276
Updated
2026-11-02
Show 12 moreShow less
OSVOESA-2025-1467 9.8

cobbler security update

Cobbler is a network install server. Cobbler supports PXE, ISO virtualized installs, and re-installing existing Linux machines. The last two modes use a helper tool, 'koan', that integrates with cobbler. Cobbler's advanced features include importing distributions from DVDs and rsync mirrors, kickstart templating, integrated yum mirroring, and built-in DHCP/DNS Management. Cobbler has a XML-RPC API for integration with other applications.

Security Fix(es):

Cobbler before 3.3.0 allows log poisoning, and resultant Remote Code Execution, via an XMLRPC method that logs to the logfile for template injection.(CVE-2021-40323)

Cobbler before 3.3.0 allows arbitrary file write operations via upload_log_data.(CVE-2021-40324)

An issue was discovered in Cobbler through 3.3.1. Routines in several files use the HTTP protocol instead of the more secure HTTPS.(CVE-2021-45081)

An issue was discovered in Cobbler before 3.3.1. In the templar.py file, the function check_for_invalid_imports can allow Cheetah code to import Python modules via the "#from MODULE import" substring. (Only lines beginning with #import are blocked.)(CVE-2021-45082)

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.(CVE-2021-45083)

Record
OESA-2025-1467
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
2026-11-02
OSVOESA-2025-1468 9.8

cobbler security update

Cobbler is a network install server. Cobbler supports PXE, ISO virtualized installs, and re-installing existing Linux machines. The last two modes use a helper tool, 'koan', that integrates with cobbler. Cobbler's advanced features include importing distributions from DVDs and rsync mirrors, kickstart templating, integrated yum mirroring, and built-in DHCP/DNS Management. Cobbler has a XML-RPC API for integration with other applications.

Security Fix(es):

Cobbler before 3.3.0 allows log poisoning, and resultant Remote Code Execution, via an XMLRPC method that logs to the logfile for template injection.(CVE-2021-40323)

Cobbler before 3.3.0 allows arbitrary file write operations via upload_log_data.(CVE-2021-40324)

An issue was discovered in Cobbler through 3.3.1. Routines in several files use the HTTP protocol instead of the more secure HTTPS.(CVE-2021-45081)

An issue was discovered in Cobbler before 3.3.1. In the templar.py file, the function check_for_invalid_imports can allow Cheetah code to import Python modules via the "#from MODULE import" substring. (Only lines beginning with #import are blocked.)(CVE-2021-45082)

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.(CVE-2021-45083)

Record
OESA-2025-1468
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
2026-11-02
OSVOESA-2025-1469 9.8

cobbler security update

Cobbler is a network install server. Cobbler supports PXE, ISO virtualized installs, and re-installing existing Linux machines. The last two modes use a helper tool, 'koan', that integrates with cobbler. Cobbler's advanced features include importing distributions from DVDs and rsync mirrors, kickstart templating, integrated yum mirroring, and built-in DHCP/DNS Management. Cobbler has a XML-RPC API for integration with other applications.

Security Fix(es):

Cobbler before 3.3.0 allows log poisoning, and resultant Remote Code Execution, via an XMLRPC method that logs to the logfile for template injection.(CVE-2021-40323)

Cobbler before 3.3.0 allows arbitrary file write operations via upload_log_data.(CVE-2021-40324)

An issue was discovered in Cobbler through 3.3.1. Routines in several files use the HTTP protocol instead of the more secure HTTPS.(CVE-2021-45081)

An issue was discovered in Cobbler before 3.3.1. In the templar.py file, the function check_for_invalid_imports can allow Cheetah code to import Python modules via the "#from MODULE import" substring. (Only lines beginning with #import are blocked.)(CVE-2021-45082)

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.(CVE-2021-45083)

Record
OESA-2025-1469
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
2026-11-02
OSVOESA-2025-1527 9.8

cobbler security update

Cobbler is a network install server. Cobbler supports PXE, ISO virtualized installs, and re-installing existing Linux machines. The last two modes use a helper tool, 'koan', that integrates with cobbler. Cobbler's advanced features include importing distributions from DVDs and rsync mirrors, kickstart templating, integrated yum mirroring, and built-in DHCP/DNS Management. Cobbler has a XML-RPC API for integration with other applications.

Security Fix(es):

Cobbler before 3.3.0 allows log poisoning, and resultant Remote Code Execution, via an XMLRPC method that logs to the logfile for template injection.(CVE-2021-40323)

Cobbler before 3.3.0 allows arbitrary file write operations via upload_log_data.(CVE-2021-40324)

An issue was discovered in Cobbler through 3.3.1. Routines in several files use the HTTP protocol instead of the more secure HTTPS.(CVE-2021-45081)

An issue was discovered in Cobbler before 3.3.1. In the templar.py file, the function check_for_invalid_imports can allow Cheetah code to import Python modules via the "#from MODULE import" substring. (Only lines beginning with #import are blocked.)(CVE-2021-45082)

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.(CVE-2021-45083)

Record
OESA-2025-1527
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
2026-11-02
OSVUBUNTU-CVE-2021-45083 7.1

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.

Record
UBUNTU-CVE-2021-45083
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSVPYSEC-2022-38 No score

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such as the hashed default password.

Record
PYSEC-2022-38
Updated
2026-11-02
OSVSUSE-FU-2022:0750-1 No score

Feature update for SUSE Manager Client Tools

This feature update fixes the following issues:

cobbler:

  • Move configuration files ownership to apache (bsc#1195906)
  • Make configuration files only readable by root (bsc#1193671, CVE-2021-45083)

golang-github-prometheus-prometheus:

  • Upgrade to upstream version 2.32.1 (jsc#SLE-22863)
    • Bugfixes:
      • Scrape: Fix reporting metrics when sample limit is reached during the report. #9996
      • Scrape: Ensure that scrape interval and scrape timeout are always set. #10023
      • TSDB: Expose and fix bug in iterators' Seek() method. #10030
  • Upgrade to upstream version 2.32.0
    • Change:
      • remote-write: Change default max retry time from 100ms to 5 seconds. #9634
    • Features:
      • Agent: New mode of operation optimized for remote-write only scenarios, without local storage.
      • Promtool: Add promtool check service-discovery command. #8970
    • Enhancements:
      • Promtool: Improve test output. #8064
      • Promtool: Use kahan summation for better numerical stability.
      • Remote-write: Reuse memory for marshalling. #9412
      • Scrape: Add scrape_body_size_bytes scrape metric behind the --enable-feature=extra-scrape-metrics flag. #9569
      • TSDB: Add windows arm64 support. #9703
      • TSDB: Optimize query by skipping unneeded sorting in TSDB.
      • Templates: Support int and uint as datatypes for template formatting. #9680
      • UI: Prefer rate over rad, delta over deg, and count over cos in autocomplete. #9688
      • TSDB: Add more size checks when writing individual sections in the index. #9710
      • PromQL: Make deriv() return zero values for constant series.
      • TSDB: Fix panic when checkpoint directory is empty. #9687
      • TSDB: Fix panic, out of order chunks, and race warning during WAL replay. #9856
      • UI: Correctly render links for targets with IPv6 addresses that contain a Zone ID. #9853
      • Promtool: Fix checking of authorization.credentials_file and bearer_token_file fields. #9883
      • Uyuni SD: Fix null pointer exception during initialization.
      • TSDB: Fix queries after a failed snapshot replay. #9980
  • Upgrade to upstream version 2.31.1
    • Bugfix:
      • SD: Fix a panic when the experimental discovery manager receives targets during a reload. #9656
  • Upgrade to upstream version 2.31.0
    • UI: Remove standard PromQL editor in favour of the codemirror-based editor. #9452
    • PromQL: Add trigonometric functions and atan2 binary operator. #9239 #9248 #9515
    • Remote: Add support for exemplar in the remote write receiver endpoint. #9319 #9414
    • SD: Add PuppetDB service discovery. #8883
    • SD: Add Uyuni service discovery. #8190
    • Web: Add support for security-related HTTP headers. #9546
    • Azure SD: Add proxy_url, follow_redirects, tls_config. #9267
    • Backfill: Add --max-block-duration in promtool create-blocks-from rules. #9511
    • Config: Print human-readable sizes with unit instead of raw numbers. #9361
    • HTTP: Re-enable HTTP/2. #9398
    • Kubernetes SD: Warn user if number of endpoints exceeds limit. #9467
    • OAuth2: Add TLS configuration to token requests. #9550
    • PromQL: Several optimizations. #9365 #9360 #9362 #9552
    • PromQL: Make aggregations deterministic in instant queries.
    • Rules: Add the ability to limit number of alerts or series.
    • SD: Experimental discovery manager to avoid restarts upon reload.
    • UI: Debounce timerange setting changes. #9359
    • Backfill: Apply rule labels after query labels. #9421
    • Scrape: Resolve conflicts between multiple exported label prefixes. #9479 #9518
    • Scrape: Restart scrape loops when scrape_interval is changed. #9551
    • TSDB: Fix memory leak in samples deletion. #9151
    • UI: Use consistent margin-bottom for all alert kinds. #9318
  • Upgrade to upstream version 2.30.3
    • TSDB: Fix panic on failed snapshot replay. #9438
    • TSDB: Don't fail snapshot…
Record
SUSE-FU-2022:0750-1
Updated
2026-11-02
OSVSUSE-SU-2022:0507-1 No score

Security update for cobbler

This update for cobbler fixes the following issues:

  • CVE-2021-45083: Fixed unsafe permissions on sensitive files (bsc#1193671).

The following non-security bugs were fixed:

  • Move configuration files ownership to apache (bsc#1195906)
Record
SUSE-SU-2022:0507-1
Updated
2026-11-02
OSVSUSE-SU-2022:0509-1 No score

Security update for cobbler

This update for cobbler fixes the following issues:

  • CVE-2021-45083: Fixed unsafe permissions on sensitive files (bsc#1193671).
  • CVE-2021-45082: Fixed incomplete template sanitation (bsc#1193678).

The following non-security bugs were fixed:

  • Fix issues with installation module logging and validation (bsc#1195918)
  • Move configuration files ownership to apache (bsc#1195906)
  • Remove hardcoded test credentials (bsc#1193673)
  • Prevent log pollution (bsc#1193675)
  • Missing sanity check on MongoDB configuration file (bsc#1193676)
Record
SUSE-SU-2022:0509-1
Updated
2026-11-02
OSVSUSE-SU-2022:0510-1 No score

Security update for cobbler

This update for cobbler fixes the following issues:

  • CVE-2021-45083: Fixed unsafe permissions on sensitive files (bsc#1193671).
  • CVE-2021-45082: Fixed incomplete template sanitation (bsc#1193678).

The following non-security bugs were fixed:

  • Fix issues with installation module logging and validation (bsc#1195918)
  • Move configuration files ownership to apache (bsc#1195906)
  • Remove hardcoded test credentials (bsc#1193673)
  • Prevent log pollution (bsc#1193675)
  • Missing sanity check on MongoDB configuration file (bsc#1193676)
Record
SUSE-SU-2022:0510-1
Updated
2026-11-02
OSVSUSE-SU-2022:14891-1 No score

Security update for cobbler

This update for cobbler fixes the following issues:

  • CVE-2021-45083: Fixed unsafe permissions on sensitive files (bsc#1193671).

The following non-security bugs were fixed:

  • Move configuration files ownership to apache (bsc#1195906)
Record
SUSE-SU-2022:14891-1
Updated
2026-11-02
OSVUSN-6475-1 No score

cobbler vulnerabilities

It was discovered that Cobbler did not properly handle user input, which could result in an absolute path traversal. An attacker could possibly use this issue to read arbitrary files. (CVE-2014-3225)

It was discovered that Cobbler did not properly handle user input, which could result in command injection. An attacker could possibly use this issue to execute arbitrary code with high privileges. (CVE-2017-1000469, CVE-2021-45082)

It was discovered that Cobbler did not properly hide private functions in a class. A remote attacker could possibly use this issue to gain high privileges and upload files to an arbitrary location. (CVE-2018-10931, CVE-2018-1000225, CVE-2018-1000226)

Nicolas Chatelain discovered that Cobbler did not properly handle user input, which could result in log poisoning. A remote attacker could possibly use this issue to bypass authorization, write in an arbitrary file, or execute arbitrary code. (CVE-2021-40323, CVE-2021-40324, CVE-2021-40325)

It was discovered that Cobbler did not properly handle file permissions during package install or update operations. An attacker could possibly use this issue to perform a privilege escalation attack. (CVE-2021-45083)

It was discovered that Cobbler did not properly process credentials for expired accounts. An attacker could possibly use this issue to login to the platform with an expired account or password. (CVE-2022-0860)

Record
USN-6475-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
cobbler
PyPI
before 3.3.1
3.3.1
cobbler
PyPI
before 3.3.1, plus listed versions
0.6.3-23.1.23.2.13.2.23.2.33.3.0
3.3.1
cobbler
openEuler:22.03-LTS-SP3
From an advisory covering 5 CVEs
before 3.2.3-2.oe2203sp3
3.2.3-2.oe2203sp3
cobbler
openEuler:22.03-LTS-SP4
From an advisory covering 5 CVEs
before 3.2.3-2.oe2203sp4
3.2.3-2.oe2203sp4
cobbler
openEuler:24.03-LTS-SP1
From an advisory covering 5 CVEs
before 3.2.3-2.oe2403sp1
3.2.3-2.oe2403sp1
cobbler
openEuler:24.03-LTS
From an advisory covering 5 CVEs
before 3.2.3-2.oe2403
3.2.3-2.oe2403
cobbler
PyPI
before 3.3.1, plus listed versions
0.6.3-23.1.23.2.13.2.23.3.03.2.3
3.3.1
cobbler
SUSE:HPE Helion OpenStack 8
before 2.6.6-49.35.1
2.6.6-49.35.1
cobbler
SUSE:OpenStack Cloud 8
before 2.6.6-49.35.1
2.6.6-49.35.1
cobbler
SUSE:OpenStack Cloud 9
before 2.6.6-49.35.1
2.6.6-49.35.1
Show 7 moreShow less
Affected packages
PackageAffectedFixed
cobbler
SUSE:Manager Client Tools 12
before 2.6.6-49.35.1
2.6.6-49.35.1
cobbler
SUSE:Manager Server Module 4.2
From an advisory covering 2 CVEs
before 3.1.2-150300.5.14.1
3.1.2-150300.5.14.1
cobbler
SUSE:Manager Server Module 4.1
From an advisory covering 2 CVEs
before 3.0.0+git20190806.32c4bae0-8.22.9.1
3.0.0+git20190806.32c4bae0-8.22.9.1
cobbler
SUSE:Linux Enterprise Server 11 SP3-CLIENT-TOOLS
before 2.2.2-0.68.15.1
2.2.2-0.68.15.1
cobbler
SUSE:Linux Enterprise Server 11 SP4-CLIENT-TOOLS
before 2.2.2-0.68.15.1
2.2.2-0.68.15.1
cobbler
Ubuntu:Pro:16.04:LTS
before 2.4.1-0ubuntu2+esm1, plus listed versions
2.4.1-0ubuntu2
2.4.1-0ubuntu2+esm1
cobbler
Ubuntu:Pro:16.04:LTS
From an advisory covering 11 CVEs
before 2.4.1-0ubuntu2+esm1, plus listed versions
2.4.1-0ubuntu2
2.4.1-0ubuntu2+esm1

History

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

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

In short

CVE-2021-45083 is a high vulnerability (CVSS 7.1) in Cobbler Project Cobbler, published February 18, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.31%, the 24th percentile. Fixed in cobbler 3.3.1.

References

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Left out here: the rest of 1 source description. The JSON record has them.

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