SUSE-SU-2018:3553-1
Vulnerability from csaf_suse - Published: 2018-10-29 16:28 - Updated: 2018-10-29 16:28Summary
Security update for python-cryptography
Severity
Moderate
Notes
Title of the patch: Security update for python-cryptography
Description of the patch: This update for python-cryptography fixes the following issues:
- CVE-2018-10903: The finalize_with_tag API did not enforce a minimum tag
length. If a user did not validate the input length prior to passing it to
finalize_with_tag an attacker could craft an invalid payload with a shortened
tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the
MAC check. GCM tag forgeries could have caused key leakage (bsc#1101820)
Patchnames: HPE-Helion-OpenStack-8-2018-2517,SUSE-OpenStack-Cloud-8-2018-2517,SUSE-OpenStack-Cloud-Crowbar-8-2018-2517
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
5.3 (Medium)
Affected products
Recommended
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: HPE Helion OpenStack 8:python-cryptography-2.0.3-3.3.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud 8:python-cryptography-2.0.3-3.3.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE OpenStack Cloud Crowbar 8:python-cryptography-2.0.3-3.3.1.x86_64 | — |
Vendor Fix
|
Threats
Impact
important
References
8 references
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],
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"text": "A flaw was found in python-cryptography versions between \u003e=1.9.0 and \u003c2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.",
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}
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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.
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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.
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.
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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.
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