Описание
Improper Validation of Unsafe Equivalence in punycode by the idna crate from Servo rust-url allows an attacker to create a punycode hostname that one part of a system might treat as distinct while another part of that system would treat as equivalent to another hostname.
A flaw was found in idna crate. This vulnerability allows hostname spoofing and potential privilege escalation via specially crafted Punycode labels that render as ASCII or empty labels, leading to incorrect equality comparisons during hostname validation.
Отчет
This issue was rated as moderate because certain hostnames can be interpreted incorrectly by idna, potentially allowing an attacker to bypass hostname checks. Exploitation requires specific conditions, such as a client accepting unusual domain names and an attacker controlling a matching DNS entry. While it could expose sensitive information or allow limited privilege escalation, it does not affect system availability, and the risk is considered moderate.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Confidential Compute Attestation | confidential-compute-attestation-tech-preview/trustee-rhel9 | Not affected | ||
| OpenShift Serverless | openshift-serverless-1/kn-plugin-func-func-util-rhel8 | Affected | ||
| Red Hat Ansible Automation Platform 2 | python3.11-nh3 | Not affected | ||
| Red Hat Enterprise Linux 10 | aardvark-dns | Not affected | ||
| Red Hat Enterprise Linux 10 | fido-device-onboard | Will not fix | ||
| Red Hat Enterprise Linux 10 | gjs | Affected | ||
| Red Hat Enterprise Linux 10 | glycin-loaders | Not affected | ||
| Red Hat Enterprise Linux 10 | keylime-agent-rust | Not affected | ||
| Red Hat Enterprise Linux 10 | librsvg2 | Not affected | ||
| Red Hat Enterprise Linux 10 | loupe | Not affected |
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Дополнительная информация
Статус:
EPSS
5.9 Medium
CVSS3
Связанные уязвимости
Improper Validation of Unsafe Equivalence in punycode by the idna crate from Servo rust-url allows an attacker to create a punycode hostname that one part of a system might treat as distinct while another part of that system would treat as equivalent to another hostname.
Improper Validation of Unsafe Equivalence in punycode by the idna crate from Servo rust-url allows an attacker to create a punycode hostname that one part of a system might treat as distinct while another part of that system would treat as equivalent to another hostname.
Improper Validation of Unsafe Equivalence in punycode by the idna crat ...
EPSS
5.9 Medium
CVSS3