CVE-2023-6240 (GCVE-0-2023-6240)
Vulnerability from cvelistv5
Published
2024-02-04 14:11
Modified
2025-11-08 07:10
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-203 - Observable Discrepancy
Summary
A Marvin vulnerability side-channel leakage was found in the RSA decryption operation in the Linux Kernel. This issue may allow a network attacker to decrypt ciphertexts or forge signatures, limiting the services that use that private key.
References
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Impacted products
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| ► | Red Hat | Red Hat Enterprise Linux 8 |
Unaffected: 0:4.18.0-553.5.1.rt7.346.el8_10 < * cpe:/a:redhat:enterprise_linux:8::realtime cpe:/a:redhat:enterprise_linux:8::nfv |
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\"https://access.redhat.com/errata/RHSA-2024:1882\", \"name\": \"RHSA-2024:1882\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:2758\", \"name\": \"RHSA-2024:2758\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:3414\", \"name\": \"RHSA-2024:3414\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:3421\", \"name\": \"RHSA-2024:3421\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:3618\", \"name\": \"RHSA-2024:3618\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:3627\", \"name\": \"RHSA-2024:3627\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2023-6240\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2250843\", \"name\": \"RHBZ#2250843\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://people.redhat.com/~hkario/marvin/\"}, {\"url\": \"https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A Marvin vulnerability side-channel leakage was found in the RSA decryption operation in the Linux Kernel. This issue may allow a network attacker to decrypt ciphertexts or forge signatures, limiting the services that use that private key.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-203\", \"description\": \"Observable Discrepancy\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2025-11-08T07:10:21.775Z\"}, \"x_redhatCweChain\": \"CWE-203: Observable Discrepancy\"}}",
"cveMetadata": "{\"cveId\": \"CVE-2023-6240\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-08T07:10:21.775Z\", \"dateReserved\": \"2023-11-21T12:10:21.499Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2024-02-04T14:11:17.824Z\", \"assignerShortName\": \"redhat\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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