Vulnerability-Lookup

SUSE-SU-2021:2195-1

Vulnerability from csaf_suse - Published: 2021-06-28 16:59 - Updated: 2026-09-20 14:00

Summary

Security update for python-urllib3, python-requests

Severity

Moderate

Notes

Title of the patch: Security update for python-urllib3, python-requests

Description of the patch: This update for python-urllib3 and python-requests fixes the following issues: Security fix: - Improve performance of sub-authority splitting in URL. (bsc#1187045, CVE-2021-33503) Non-security changes: - Update python-urllib3 to version 1.25.10 to stay compatible with changes needed in the Server and Public Cloud products. (bsc#1182421, jsc#ECO-3352) - Update python-requests to version 2.24.0 to stay compatible with changes needed in the Server and Public Cloud products. (bsc#1176784, jsc#ECO-3105))

Patchnames: HPE-Helion-OpenStack-8-2021-2195,SUSE-2021-2195,SUSE-OpenStack-Cloud-8-2021-2195,SUSE-OpenStack-Cloud-Crowbar-8-2021-2195

CVE-2021-33503

7.5 (High)


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

Affected products

Recommended 6 products

Product	Version	Remediation
Unresolved product id: HPE Helion OpenStack 8:python-requests-0:2.24.0-3.3.1.noarch	—	Vendor Fix
Unresolved product id: HPE Helion OpenStack 8:python-urllib3-0:1.25.10-5.19.1.noarch	—	Vendor Fix
Unresolved product id: SUSE OpenStack Cloud 8:python-requests-0:2.24.0-3.3.1.noarch	—	Vendor Fix
Unresolved product id: SUSE OpenStack Cloud 8:python-urllib3-0:1.25.10-5.19.1.noarch	—	Vendor Fix
Unresolved product id: SUSE OpenStack Cloud Crowbar 8:python-requests-0:2.24.0-3.3.1.noarch	—	Vendor Fix
Unresolved product id: SUSE OpenStack Cloud Crowbar 8:python-urllib3-0:1.25.10-5.19.1.noarch	—	Vendor Fix

Threats

Impact important

References

10 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/1176784	self
https://bugzilla.suse.com/1182421	self
https://bugzilla.suse.com/1187045	self
https://www.suse.com/security/cve/CVE-2021-33503/	self
https://www.suse.com/security/cve/CVE-2021-33503	external
https://bugzilla.suse.com/1187045	external

JSON

To clipboard

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}

CVE-2021-33503 (GCVE-0-2021-33503)

Vulnerability from cvelistv5 – Published: 2021-06-29 10:55 – Updated: 2024-08-03 23:50

Summary

An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 27/100 over 2307 records in the last 180 days details

References

6 references

URL	Tags
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://security.gentoo.org/glsa/202107-36	vendor-advisoryx_refsource_GENTOO
https://www.oracle.com/security-alerts/cpuoct2021.html	x_refsource_MISC
https://github.com/advisories/GHSA-q2q7-5pp4-w6pg	x_refsource_CONFIRM
https://github.com/urllib3/urllib3/commit/2d4a3fe…	x_refsource_CONFIRM

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-2021:2195-1

CVE-2021-33503 (GCVE-0-2021-33503)

Tags

Sightings

Nomenclature

Related by attack behaviour