Vulnerability-Lookup

RHSA-2023:3106

Vulnerability from csaf_opensuse - Published: 2023-05-16 00:00 - Updated: 2026-09-20 11:29

Summary

security update for curl

Severity

Low

Notes

Title of the patch: security update for curl

Description of the patch: This security update provides a functional equivalent of RHSA-2023:3106. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2023:3106.

Patchnames: RHSA-2023:3106

CVE-2023-27535

5.8 (Medium)


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

Affected products

Recommended 7 products

Product	Version	Remediation
Unresolved product id: SUSE Liberty Linux 8:curl-0:7.61.1-30.el8_8.2.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libcurl-0:7.61.1-30.el8_8.2.i686	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libcurl-0:7.61.1-30.el8_8.2.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libcurl-devel-0:7.61.1-30.el8_8.2.i686	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libcurl-devel-0:7.61.1-30.el8_8.2.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libcurl-minimal-0:7.61.1-30.el8_8.2.i686	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libcurl-minimal-0:7.61.1-30.el8_8.2.x86_64	—	Vendor Fix

Threats

Impact moderate

References

5 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/r…	self
https://www.suse.com/security/cve/CVE-2023-27535/	self
https://www.suse.com/security/cve/CVE-2023-27535	external
https://bugzilla.suse.com/1209211	external

JSON

To clipboard

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}

CVE-2023-27535 (GCVE-0-2023-27535)

Vulnerability from cvelistv5 – Published: 2023-03-30 00:00 – Updated: 2025-06-09 14:47

Summary

An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.

Severity

5.9 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-06-03 18:24 UTC

CWE

CWE-305 - Authentication Bypass by Primary Weakness (CWE-305)

Assigner

hackerone mitre root

References

5 references

URL	Tags
https://hackerone.com/reports/1892780
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.netapp.com/advisory/ntap-2023042…
https://lists.debian.org/debian-lts-announce/2023…	mailing-list
https://security.gentoo.org/glsa/202310-12	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
n/a	https://github.com/curl/curl	Affected: Fixed in 8.0.0

Show details on NVD website

JSON

To clipboard

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      "references": [
        {
          "url": "https://hackerone.com/reports/1892780"
        },
        {
          "name": "FEDORA-2023-7e7414e64d",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20230420-0010/"
        },
        {
          "name": "[debian-lts-announce] 20230421 [SECURITY] [DLA 3398-1] curl security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html"
        },
        {
          "name": "GLSA-202310-12",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202310-12"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
    "assignerShortName": "hackerone",
    "cveId": "CVE-2023-27535",
    "datePublished": "2023-03-30T00:00:00.000Z",
    "dateReserved": "2023-03-02T00:00:00.000Z",
    "dateUpdated": "2025-06-09T14:47:57.951Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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

RHSA-2023:3106

CVE-2023-27535 (GCVE-0-2023-27535)

Tags

Sightings

Nomenclature

Related by attack behaviour