Vulnerability-Lookup

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	CPE status
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		guessed

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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}

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": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "gawk-lang-5.0.1-5.oe1.aarch64.rpm",
          "gawk-5.0.1-5.oe1.aarch64.rpm",
          "gawk-debugsource-5.0.1-5.oe1.aarch64.rpm",
          "gawk-debuginfo-5.0.1-5.oe1.aarch64.rpm",
          "gawk-devel-5.0.1-5.oe1.aarch64.rpm"
        ],
        "noarch": [
          "gawk-help-5.0.1-5.oe1.noarch.rpm"
        ],
        "src": [
          "gawk-5.0.1-5.oe1.src.rpm"
        ],
        "x86_64": [
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          "gawk-5.0.1-5.oe1.x86_64.rpm",
          "gawk-devel-5.0.1-5.oe1.x86_64.rpm",
          "gawk-lang-5.0.1-5.oe1.x86_64.rpm",
          "gawk-debuginfo-5.0.1-5.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "gawk",
        "purl": "pkg:rpm/openEuler/gawk\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.0.1-5.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "gawk-devel-5.0.1-5.oe1.aarch64.rpm",
          "gawk-debuginfo-5.0.1-5.oe1.aarch64.rpm",
          "gawk-lang-5.0.1-5.oe1.aarch64.rpm",
          "gawk-5.0.1-5.oe1.aarch64.rpm",
          "gawk-debugsource-5.0.1-5.oe1.aarch64.rpm"
        ],
        "noarch": [
          "gawk-help-5.0.1-5.oe1.noarch.rpm"
        ],
        "src": [
          "gawk-5.0.1-5.oe1.src.rpm"
        ],
        "x86_64": [
          "gawk-5.0.1-5.oe1.x86_64.rpm",
          "gawk-lang-5.0.1-5.oe1.x86_64.rpm",
          "gawk-devel-5.0.1-5.oe1.x86_64.rpm",
          "gawk-debuginfo-5.0.1-5.oe1.x86_64.rpm",
          "gawk-debugsource-5.0.1-5.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP3",
        "name": "gawk",
        "purl": "pkg:rpm/openEuler/gawk\u0026distro=openEuler-20.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
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          "gawk-5.1.1-4.oe2203.aarch64.rpm",
          "gawk-debugsource-5.1.1-4.oe2203.aarch64.rpm",
          "gawk-debuginfo-5.1.1-4.oe2203.aarch64.rpm",
          "gawk-lang-5.1.1-4.oe2203.aarch64.rpm",
          "gawk-lang-5.1.1-5.oe2203sp1.aarch64.rpm",
          "gawk-devel-5.1.1-5.oe2203sp1.aarch64.rpm",
          "gawk-5.1.1-5.oe2203sp1.aarch64.rpm",
          "gawk-debuginfo-5.1.1-5.oe2203sp1.aarch64.rpm",
          "gawk-debugsource-5.1.1-5.oe2203sp1.aarch64.rpm",
          "gawk-debugsource-5.1.1-5.oe2203sp2.aarch64.rpm",
          "gawk-lang-5.1.1-5.oe2203sp2.aarch64.rpm",
          "gawk-5.1.1-5.oe2203sp2.aarch64.rpm",
          "gawk-devel-5.1.1-5.oe2203sp2.aarch64.rpm",
          "gawk-debuginfo-5.1.1-5.oe2203sp2.aarch64.rpm"
        ],
        "noarch": [
          "gawk-help-5.1.1-4.oe2203.noarch.rpm",
          "gawk-help-5.1.1-5.oe2203sp1.noarch.rpm",
          "gawk-help-5.1.1-5.oe2203sp2.noarch.rpm"
        ],
        "src": [
          "gawk-5.1.1-4.oe2203.src.rpm",
          "gawk-5.1.1-5.oe2203sp1.src.rpm",
          "gawk-5.1.1-5.oe2203sp2.src.rpm"
        ],
        "x86_64": [
          "gawk-debugsource-5.1.1-4.oe2203.x86_64.rpm",
          "gawk-5.1.1-4.oe2203.x86_64.rpm",
          "gawk-debuginfo-5.1.1-4.oe2203.x86_64.rpm",
          "gawk-devel-5.1.1-4.oe2203.x86_64.rpm",
          "gawk-lang-5.1.1-4.oe2203.x86_64.rpm",
          "gawk-5.1.1-5.oe2203sp1.x86_64.rpm",
          "gawk-devel-5.1.1-5.oe2203sp1.x86_64.rpm",
          "gawk-lang-5.1.1-5.oe2203sp1.x86_64.rpm",
          "gawk-debugsource-5.1.1-5.oe2203sp1.x86_64.rpm",
          "gawk-debuginfo-5.1.1-5.oe2203sp1.x86_64.rpm",
          "gawk-5.1.1-5.oe2203sp2.x86_64.rpm",
          "gawk-debugsource-5.1.1-5.oe2203sp2.x86_64.rpm",
          "gawk-devel-5.1.1-5.oe2203sp2.x86_64.rpm",
          "gawk-debuginfo-5.1.1-5.oe2203sp2.x86_64.rpm",
          "gawk-lang-5.1.1-5.oe2203sp2.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS",
        "name": "gawk",
        "purl": "pkg:rpm/openEuler/gawk\u0026distro=openEuler-22.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.1.1-5.oe2203sp2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "gawk-lang-5.1.1-5.oe2203sp1.aarch64.rpm",
          "gawk-devel-5.1.1-5.oe2203sp1.aarch64.rpm",
          "gawk-5.1.1-5.oe2203sp1.aarch64.rpm",
          "gawk-debuginfo-5.1.1-5.oe2203sp1.aarch64.rpm",
          "gawk-debugsource-5.1.1-5.oe2203sp1.aarch64.rpm"
        ],
        "noarch": [
          "gawk-help-5.1.1-5.oe2203sp1.noarch.rpm"
        ],
        "src": [
          "gawk-5.1.1-5.oe2203sp1.src.rpm"
        ],
        "x86_64": [
          "gawk-5.1.1-5.oe2203sp1.x86_64.rpm",
          "gawk-devel-5.1.1-5.oe2203sp1.x86_64.rpm",
          "gawk-lang-5.1.1-5.oe2203sp1.x86_64.rpm",
          "gawk-debugsource-5.1.1-5.oe2203sp1.x86_64.rpm",
          "gawk-debuginfo-5.1.1-5.oe2203sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP1",
        "name": "gawk",
        "purl": "pkg:rpm/openEuler/gawk\u0026distro=openEuler-22.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.1.1-5.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "gawk-debugsource-5.1.1-5.oe2203sp2.aarch64.rpm",
          "gawk-lang-5.1.1-5.oe2203sp2.aarch64.rpm",
          "gawk-5.1.1-5.oe2203sp2.aarch64.rpm",
          "gawk-devel-5.1.1-5.oe2203sp2.aarch64.rpm",
          "gawk-debuginfo-5.1.1-5.oe2203sp2.aarch64.rpm"
        ],
        "noarch": [
          "gawk-help-5.1.1-5.oe2203sp2.noarch.rpm"
        ],
        "src": [
          "gawk-5.1.1-5.oe2203sp2.src.rpm"
        ],
        "x86_64": [
          "gawk-5.1.1-5.oe2203sp2.x86_64.rpm",
          "gawk-debugsource-5.1.1-5.oe2203sp2.x86_64.rpm",
          "gawk-devel-5.1.1-5.oe2203sp2.x86_64.rpm",
          "gawk-debuginfo-5.1.1-5.oe2203sp2.x86_64.rpm",
          "gawk-lang-5.1.1-5.oe2203sp2.x86_64.rpm"
        ]
      },
      "package": {
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        "name": "gawk",
        "purl": "pkg:rpm/openEuler/gawk\u0026distro=openEuler-22.03-LTS-SP2"
      },
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            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "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"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "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"
  ]
}

SUSE-SU-2023:3431-1

Vulnerability from csaf_suse - Published: 2023-08-24 11:53 - Updated: 2023-08-24 11:53

Summary

Security update for gawk

Severity

Low

Scope

1 vulnerability in this advisory, including CVE-2023-4156.

CVE-2023-4156

3.3 (Low)


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

Recommended: 8 products

Open the full advisory

SUSE-SU-2023:3440-1

Vulnerability from csaf_suse - Published: 2023-08-28 06:57 - Updated: 2023-08-28 06:57

Summary

Security update for gawk

Severity

Low

Scope

1 vulnerability in this advisory, including CVE-2023-4156.

CVE-2023-4156

3.3 (Low)


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

Recommended: 37 products

Open the full advisory

UBUNTU-CVE-2023-4156 (CVE-2023-4156)

Vulnerability from osv_ubuntu – Published: 2023-08-08 00:00 – Updated: 2025-09-08 16:55 – Source website

Details

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

7.1 (High)


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

4.4 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2023-4156	REPORT
	https://mail.gnu.org/archive/html/bug-gawk/2022-0…	REPORT
	https://mail.gnu.org/archive/html/bug-gawk/2022-0…	REPORT
	https://git.savannah.gnu.org/gitweb/?p=gawk.git;a…	REPORT
	https://ubuntu.com/security/notices/USN-6373-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2023-4156	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "gawk",
            "binary_version": "1:4.0.1+dfsg-2.1ubuntu2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "gawk",
        "purl": "pkg:deb/ubuntu/gawk@1:4.0.1+dfsg-2.1ubuntu2+esm1?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
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          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
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      ]
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      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
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      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "gawk",
        "purl": "pkg:deb/ubuntu/gawk@1:4.1.3+dfsg-0.1ubuntu0.1~esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:4.1.3+dfsg-0.1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:4.1.1+dfsg-1",
        "1:4.1.3+dfsg-0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "gawk",
            "binary_version": "1:4.1.4+dfsg-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "gawk",
        "purl": "pkg:deb/ubuntu/gawk@1:4.1.4+dfsg-1ubuntu0.1~esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:4.1.4+dfsg-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:4.1.4+dfsg-1",
        "1:4.1.4+dfsg-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "gawk",
            "binary_version": "1:5.0.1+dfsg-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "gawk",
        "purl": "pkg:deb/ubuntu/gawk@1:5.0.1+dfsg-1ubuntu0.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:5.0.1+dfsg-1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:4.2.1+dfsg-1.1build1",
        "1:5.0.1+dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "gawk",
            "binary_version": "1:5.1.0-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "gawk",
        "purl": "pkg:deb/ubuntu/gawk@1:5.1.0-1ubuntu0.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:5.1.0-1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:5.1.0-1build1",
        "1:5.1.0-1build2",
        "1:5.1.0-1build3"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2023-4156",
  "modified": "2025-09-08T16:55:52Z",
  "published": "2023-08-08T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-4156"
    },
    {
      "type": "REPORT",
      "url": "https://mail.gnu.org/archive/html/bug-gawk/2022-08/msg00000.html"
    },
    {
      "type": "REPORT",
      "url": "https://mail.gnu.org/archive/html/bug-gawk/2022-08/msg00023.html"
    },
    {
      "type": "REPORT",
      "url": "https://git.savannah.gnu.org/gitweb/?p=gawk.git;a=commitdiff;h=e709eb829448ce040087a3fc5481db6bfcaae212"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6373-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-4156"
    }
  ],
  "related": [
    "USN-6373-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-4156"
  ]
}

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.

Action not permitted

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

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

SUSE-SU-2023:3431-1

SUSE-SU-2023:3440-1

UBUNTU-CVE-2023-4156 (CVE-2023-4156)

Tags

Sightings

Nomenclature

Related by attack behaviour