gsd-2020-25212
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2020-25212", "description": "A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452.", "id": "GSD-2020-25212", "references": [ "https://www.suse.com/security/cve/CVE-2020-25212.html", "https://access.redhat.com/errata/RHSA-2021:1739", "https://access.redhat.com/errata/RHSA-2021:1578", "https://access.redhat.com/errata/RHSA-2021:0878", "https://access.redhat.com/errata/RHSA-2021:0760", "https://access.redhat.com/errata/RHSA-2021:0526", "https://access.redhat.com/errata/RHSA-2020:5441", "https://access.redhat.com/errata/RHSA-2020:5437", "https://access.redhat.com/errata/RHSA-2020:4279", "https://ubuntu.com/security/CVE-2020-25212", "https://alas.aws.amazon.com/cve/html/CVE-2020-25212.html", "https://linux.oracle.com/cve/CVE-2020-25212.html" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2020-25212" ], "details": "A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452.", "id": "GSD-2020-25212", "modified": "2023-12-13T01:21:56.851626Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "cve@mitre.org", "ID": "CVE-2020-25212", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "n/a", "version": { "version_data": [ { "version_value": "n/a" } ] } } ] }, "vendor_name": "n/a" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "references": { "reference_data": [ { "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b4487b93545214a9db8cbf32e86411677b0cca21", "refsource": "MISC", "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b4487b93545214a9db8cbf32e86411677b0cca21" }, { "name": "https://twitter.com/grsecurity/status/1303370421958578179", "refsource": "MISC", "url": "https://twitter.com/grsecurity/status/1303370421958578179" }, { "name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.3", "refsource": "MISC", "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.3" }, { "name": "USN-4527-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4527-1/" }, { "name": "USN-4525-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4525-1/" }, { "name": "[debian-lts-announce] 20200928 [SECURITY] [DLA 2385-1] linux-4.19 security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html" }, { "name": "openSUSE-SU-2020:1655", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html" }, { "name": "USN-4578-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4578-1/" }, { "name": "openSUSE-SU-2020:1682", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00035.html" }, { "name": "openSUSE-SU-2020:1698", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html" }, { "name": "[debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html" }, { "name": "[debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html" } ] } }, "nvd.nist.gov": { "configurations": { "CVE_data_version": "4.0", "nodes": [ { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndExcluding": "5.8.3", "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" } ] }, "cve": { "CVE_data_meta": { "ASSIGNER": "cve@mitre.org", "ID": "CVE-2020-25212" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "en", "value": "A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "CWE-787" }, { "lang": "en", "value": "CWE-367" } ] } ] }, "references": { "reference_data": [ { "name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.3", "refsource": "MISC", "tags": [ "Mailing List", "Vendor Advisory" ], "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.3" }, { "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b4487b93545214a9db8cbf32e86411677b0cca21", "refsource": "MISC", "tags": [ "Mailing List", "Patch", "Vendor Advisory" ], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b4487b93545214a9db8cbf32e86411677b0cca21" }, { "name": "https://twitter.com/grsecurity/status/1303370421958578179", "refsource": "MISC", "tags": [ "Third Party Advisory" ], "url": "https://twitter.com/grsecurity/status/1303370421958578179" }, { "name": "USN-4527-1", "refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/4527-1/" }, { "name": "USN-4525-1", "refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/4525-1/" }, { "name": "[debian-lts-announce] 20200928 [SECURITY] [DLA 2385-1] linux-4.19 security update", "refsource": "MLIST", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html" }, { "name": "openSUSE-SU-2020:1655", "refsource": "SUSE", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html" }, { "name": "USN-4578-1", "refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/4578-1/" }, { "name": "openSUSE-SU-2020:1682", "refsource": "SUSE", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00035.html" }, { "name": "openSUSE-SU-2020:1698", "refsource": "SUSE", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html" }, { "name": "[debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update", "refsource": "MLIST", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html" }, { "name": "[debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update", "refsource": "MLIST", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html" } ] } }, "impact": { "baseMetricV2": { "acInsufInfo": false, "cvssV2": { "accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.4, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0" }, "exploitabilityScore": 3.4, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "MEDIUM", "userInteractionRequired": false }, "baseMetricV3": { "cvssV3": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "exploitabilityScore": 1.0, "impactScore": 5.9 } }, "lastModifiedDate": "2022-04-28T18:32Z", "publishedDate": "2020-09-09T16:15Z" } } }
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Sightings
Author | Source | Type | Date |
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Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- 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.