Vulnerability-Lookup

OESA-2023-1575 (CVE-2023-4156)

Vulnerability from osv_openeuler – Published: 2023-09-02 11:06 – Updated: 2026-08-06 11:06 – Source website

Summary

gawk security update

Details

The gawk package is the GNU implementation of awk. The awk utility interprets a special-purpose programming language that makes it possible to handle simple data-reformatting jobs with just a few lines of code.

Security Fix(es):

A heap out of bound read issue exists in builtin.c of gawk prior to version 5.1.1. The array "the_args" takes an unsafe index "val", while it does not validate the index to ensure the index refers to a valid position in the array (e.g., exceedingly large or negative). The vulnerability can cause crash of the software and might be used by attackers to read sensitive information.

https://mail.gnu.org/archive/html/bug-gawk/2022-08/msg00000.html https://mail.gnu.org/archive/html/bug-gawk/2022-08/msg00023.html https://fossies.org/linux/gawk/ChangeLog#470 (Line: 470-475)(CVE-2023-4156)

Severity

3.3 (Low)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-4156	ADVISORY

JSON

To clipboard

{
  "affected": [
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          "gawk-5.0.1-5.oe1.aarch64.rpm",
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  "database_specific": {
    "severity": "Low"
  },
  "details": "The gawk package is the GNU implementation of awk. The awk utility interprets a special-purpose programming language that makes it possible to handle simple data-reformatting jobs with just a few lines of code.\r\n\r\nSecurity Fix(es):\r\n\r\nA heap out of bound read issue exists in builtin.c of gawk prior to version 5.1.1. The array \u0026quot;the_args\u0026quot; takes an unsafe index \u0026quot;val\u0026quot;, while it does not validate the index to ensure the index refers to a valid position in the array (e.g., exceedingly large or negative). The vulnerability can cause crash of the software and might be used by attackers to read sensitive information.\r\n\r\nhttps://mail.gnu.org/archive/html/bug-gawk/2022-08/msg00000.html\nhttps://mail.gnu.org/archive/html/bug-gawk/2022-08/msg00023.html\nhttps://fossies.org/linux/gawk/ChangeLog#470 (Line: 470-475)(CVE-2023-4156)",
  "id": "OESA-2023-1575",
  "modified": "2026-08-06T11:06:01Z",
  "published": "2023-09-02T11:06:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1575"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4156"
    }
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  "schema_version": "1.7.2",
  "severity": [
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      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "gawk security update",
  "upstream": [
    "CVE-2023-4156"
  ]
}

CVE-2023-4156 (GCVE-0-2023-4156)

Vulnerability from cvelistv5 – Published: 2023-09-25 17:20 – Updated: 2024-09-24 15:36

Title

Heap out of bound read in builtin.c

Summary

A heap out-of-bounds read flaw was found in builtin.c in the gawk package. This issue may lead to a crash and could be used to read sensitive information.

Severity

4.4 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-24 15:36 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

redhat redhat root

References

2 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2023-4156	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2215930	issue-trackingx_refsource_REDHAT

Impacted products

6 products

Vendor	Product	Version
n/a	gawk	Unaffected: 5.1.1
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
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Fedora	Fedora

Date Public

2023-06-19 00:00

Credits

Red Hat would like to thank Jiongchi Yu for reporting this issue.

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.

Detection rules are retrieved from Rulezet.

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.