Vulnerability-Lookup

RHSA-2023:4523

Vulnerability from csaf_opensuse - Published: 2023-08-08 00:00 - Updated: 2026-09-20 11:30

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-2023:4523. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2023:4523.

Patchnames: RHSA-2023:4523

CVE-2023-27536

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_8.3.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libcurl-0:7.61.1-30.el8_8.3.i686	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libcurl-0:7.61.1-30.el8_8.3.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libcurl-devel-0:7.61.1-30.el8_8.3.i686	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libcurl-devel-0:7.61.1-30.el8_8.3.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libcurl-minimal-0:7.61.1-30.el8_8.3.i686	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:libcurl-minimal-0:7.61.1-30.el8_8.3.x86_64	—	Vendor Fix

Threats

Impact moderate

CVE-2023-28321

4.3 (Medium)


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

Affected products

Recommended 7 products, the same list as for CVE-2023-27536

Threats

Impact moderate

References

9 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-2023-27536/	self
https://www.suse.com/security/cve/CVE-2023-28321/	self
https://www.suse.com/security/cve/CVE-2023-27536	external
https://bugzilla.suse.com/1209212	external
https://www.suse.com/security/cve/CVE-2023-28321	external
https://bugzilla.suse.com/1211232	external
https://bugzilla.suse.com/1218210	external

JSON

To clipboard

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}

CVE-2023-27536 (GCVE-0-2023-27536)

Vulnerability from cvelistv5 – Published: 2023-03-30 00:00 – Updated: 2025-02-14 15:39

Summary

An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELEGATION option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the CURLOPT_GSSAPI_DELEGATION option has been changed.

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 2025-02-14 15:39 UTC

CWE

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

Assigner

hackerone mitre root

References

5 references

URL	Tags
https://hackerone.com/reports/1895135
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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CVE-2023-28321 (GCVE-0-2023-28321)

Vulnerability from cvelistv5 – Published: 2023-05-26 00:00 – Updated: 2025-01-15 15:54

Summary

An improper certificate validation vulnerability exists in curl <v8.1.0 in the way it supports matching of wildcard patterns when listed as "Subject Alternative Name" in TLS server certificates. curl can be built to use its own name matching function for TLS rather than one provided by a TLS library. This private wildcard matching function would match IDN (International Domain Name) hosts incorrectly and could as a result accept patterns that otherwise should mismatch. IDN hostnames are converted to puny code before used for certificate checks. Puny coded names always start with `xn--` and should not be allowed to pattern match, but the wildcard check in curl could still check for `x*`, which would match even though the IDN name most likely contained nothing even resembling an `x`.

Severity

5.9 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-01-15 15:54 UTC

CWE

CWE-295 - Improper Certificate Validation (CWE-295)

Assigner

hackerone mitre root

References

12 references

URL	Tags
https://hackerone.com/reports/1950627
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.netapp.com/advisory/ntap-2023060…
https://support.apple.com/kb/HT213843
https://support.apple.com/kb/HT213844
https://support.apple.com/kb/HT213845
http://seclists.org/fulldisclosure/2023/Jul/52	mailing-list
http://seclists.org/fulldisclosure/2023/Jul/48	mailing-list
http://seclists.org/fulldisclosure/2023/Jul/47	mailing-list
https://security.gentoo.org/glsa/202310-12	vendor-advisory
https://lists.debian.org/debian-lts-announce/2023…	mailing-list

Impacted products

1 product

Vendor	Product	Version
n/a	https://github.com/curl/curl	Affected: Fixed in 8.1.0

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

RHSA-2023:4523

CVE-2023-27536 (GCVE-0-2023-27536)

CVE-2023-28321 (GCVE-0-2023-28321)

Tags

Sightings

Nomenclature

Related by attack behaviour