Vulnerability-Lookup

SUSE-SU-2024:1007-1

Vulnerability from csaf_suse - Published: 2024-03-27 09:51 - Updated: 2026-09-20 15:43

Summary

Security update for shadow

Severity

Moderate

Notes

Title of the patch: Security update for shadow

Description of the patch: This update for shadow fixes the following issues: - CVE-2023-29383: Fixed apparent /etc/shadow manipulation via chfn (bsc#1210507). - CVE-2023-4641: Fixed possible password leak during passwd(1) change (bsc#1214806). The following non-security bugs were fixed: - bsc#1176006: Fix chage date miscalculation - bsc#1188307: Fix passwd segfault - bsc#1203823: Remove pam_keyinit from PAM config files - bsc#1213189: Change lock mechanism to file locking to prevent lock files after power interruptions - bsc#1206627: Add --prefix support to passwd, chpasswd and chage - bsc#1205502: useradd audit event user id field cannot be interpretedd

Patchnames: SUSE-2024-1007,SUSE-SLE-Micro-5.5-2024-1007

CVE-2023-29383

5.5 (Medium)


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

Affected products

Recommended 5 products

Product	Version	Remediation
Unresolved product id: SUSE Linux Enterprise Micro 5.5:login_defs-0:4.8.1-150500.3.3.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Micro 5.5:shadow-0:4.8.1-150500.3.3.1.aarch64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Micro 5.5:shadow-0:4.8.1-150500.3.3.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Micro 5.5:shadow-0:4.8.1-150500.3.3.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Micro 5.5:shadow-0:4.8.1-150500.3.3.1.x86_64	—	Vendor Fix

Threats

Impact moderate

CVE-2023-4641

3.3 (Low)


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

Affected products

Recommended 5 products, the same list as for CVE-2023-29383

Threats

Impact low

References

19 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/s…	self
https://www.suse.com/support/update/announcement/…	self
https://lists.suse.com/pipermail/sle-security-upd…	self
https://bugzilla.suse.com/1144060	self
https://bugzilla.suse.com/1176006	self
https://bugzilla.suse.com/1188307	self
https://bugzilla.suse.com/1203823	self
https://bugzilla.suse.com/1205502	self
https://bugzilla.suse.com/1206627	self
https://bugzilla.suse.com/1210507	self
https://bugzilla.suse.com/1213189	self
https://bugzilla.suse.com/1214806	self
https://www.suse.com/security/cve/CVE-2023-29383/	self
https://www.suse.com/security/cve/CVE-2023-4641/	self
https://www.suse.com/security/cve/CVE-2023-29383	external
https://bugzilla.suse.com/1210507	external
https://www.suse.com/security/cve/CVE-2023-4641	external
https://bugzilla.suse.com/1214806	external

JSON

To clipboard

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        "title": "Description of the patch"
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  "vulnerabilities": [
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          "text": "In Shadow 4.13, it is possible to inject control characters into fields provided to the SUID program chfn (change finger). Although it is not possible to exploit this directly (e.g., adding a new user fails because \\n is in the block list), it is possible to misrepresent the /etc/passwd file when viewed. Use of \\r manipulations and Unicode characters to work around blocking of the : character make it possible to give the impression that a new user has been added. In other words, an adversary may be able to convince a system administrator to take the system offline (an indirect, social-engineered denial of service) by demonstrating that \"cat /etc/passwd\" shows a rogue user account.",
          "title": "CVE description"
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        {
          "category": "general",
          "text": "A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to store the first entry. This may allow an attacker with enough access to retrieve the password from the memory.",
          "title": "CVE description"
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            "SUSE Linux Enterprise Micro 5.5:shadow-0:4.8.1-150500.3.3.1.s390x",
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          "date": "2024-03-27T09:51:45Z",
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      "title": "CVE-2023-4641"
    }
  ]
}

CVE-2023-29383 (GCVE-0-2023-29383)

Vulnerability from cvelistv5 – Published: 2023-04-14 00:00 – Updated: 2025-11-03 19:28

Summary

In Shadow 4.13, it is possible to inject control characters into fields provided to the SUID program chfn (change finger). Although it is not possible to exploit this directly (e.g., adding a new user fails because \n is in the block list), it is possible to misrepresent the /etc/passwd file when viewed. Use of \r manipulations and Unicode characters to work around blocking of the : character make it possible to give the impression that a new user has been added. In other words, an adversary may be able to convince a system administrator to take the system offline (an indirect, social-engineered denial of service) by demonstrating that "cat /etc/passwd" shows a rogue user account.

Severity

No CVSS data available.

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-06 21:21 UTC

CWE

n/a
CWE-125 - Out-of-bounds Read

Assigner

mitre mitre root

References

5 references

URL	Tags
https://github.com/shadow-maint/shadow/pull/687
https://github.com/shadow-maint/shadow/commit/e59…
https://www.trustwave.com/en-us/resources/securit…
https://www.trustwave.com/en-us/resources/blogs/s…
https://lists.debian.org/debian-lts-announce/2025…

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CVE-2023-4641 (GCVE-0-2023-4641)

Vulnerability from cvelistv5 – Published: 2023-12-27 15:43 – Updated: 2025-11-03 19:28

Title

Shadow-utils: possible password leak during passwd(1) change

Summary

A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to store the first entry. This may allow an attacker with enough access to retrieve the password from the memory.

Severity

4.7 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-01-02 18:19 UTC

CWE

CWE-303 - Incorrect Implementation of Authentication Algorithm

Assigner

redhat redhat root

References

7 references

URL	Tags
https://access.redhat.com/errata/RHSA-2023:6632	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:7112	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:0417	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:2577	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2023-4641	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2215945	issue-trackingx_refsource_REDHAT
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

7 products

Vendor	Product	Version
		Unaffected: 4.14.0-rc1 , < * (semver)
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 2:4.6-19.el8 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::crb cpe:/o:redhat:enterprise_linux:8::baseos
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support	Unaffected: 2:4.6-17.el8_6 , < * (rpm) cpe:/o:redhat:rhel_eus:8.6::baseos cpe:/a:redhat:rhel_eus:8.6::crb
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support	Unaffected: 2:4.6-17.el8_8.2 , < * (rpm) cpe:/o:redhat:rhel_eus:8.8::baseos cpe:/a:redhat:rhel_eus:8.8::crb
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 2:4.9-8.el9 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::crb cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7

Date Public

2023-06-17 00:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

SUSE-SU-2024:1007-1

CVE-2023-29383 (GCVE-0-2023-29383)

CVE-2023-4641 (GCVE-0-2023-4641)

Tags

Sightings

Nomenclature

Related by attack behaviour