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ghsa-mmc5-hgpc-m8q5
Vulnerability from github
Published
2024-01-02 21:30
Modified
2024-04-25 18:30
Severity ?
Details
A memory leak problem was found in ctnetlink_create_conntrack in net/netfilter/nf_conntrack_netlink.c in the Linux Kernel. This issue may allow a local attacker with CAP_NET_ADMIN privileges to cause a denial of service (DoS) attack due to a refcount overflow.
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cve-2023-7192
Vulnerability from cvelistv5
Published
2024-01-02 19:02
Modified
2024-11-14 19:11
Severity ?
EPSS score ?
Summary
Kernel: refcount leak in ctnetlink_create_conntrack()
References
Impacted products
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"packageName": "kernel-rt", "product": "Red Hat Enterprise Linux 8", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/o:redhat:enterprise_linux:9" ], "defaultStatus": "affected", "packageName": "kernel", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/o:redhat:enterprise_linux:9" ], "defaultStatus": "affected", "packageName": "kernel-rt", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat" } ], "datePublic": "2023-02-10T00:00:00+00:00", "descriptions": [ { "lang": "en", "value": "A memory leak problem was found in ctnetlink_create_conntrack in net/netfilter/nf_conntrack_netlink.c in the Linux Kernel. This issue may allow a local attacker with CAP_NET_ADMIN privileges to cause a denial of service (DoS) attack due to a refcount overflow." } ], "metrics": [ { "other": { "content": { "namespace": "https://access.redhat.com/security/updates/classification/", "value": "Moderate" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "format": "CVSS" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-401", "description": "Missing Release of Memory after Effective Lifetime", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2024-09-16T17:01:37.373Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat" }, "references": [ { "name": "RHSA-2024:0723", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2024:0723" }, { "name": "RHSA-2024:0725", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2024:0725" }, { "name": "RHSA-2024:1188", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2024:1188" }, { "name": "RHSA-2024:1250", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2024:1250" }, { "name": "RHSA-2024:1306", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2024:1306" }, { "name": "RHSA-2024:1367", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2024:1367" }, { "name": "RHSA-2024:1382", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2024:1382" }, { "name": "RHSA-2024:1404", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2024:1404" }, { "name": "RHSA-2024:2006", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2024:2006" }, { "name": "RHSA-2024:2008", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2024:2008" }, { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2023-7192" }, { "name": "RHBZ#2256279", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2256279" }, { "url": "https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=ac4893980bbe79ce383daf9a0885666a30fe4c83" } ], "timeline": [ { "lang": "en", "time": "2023-09-13T00:00:00+00:00", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2023-02-10T00:00:00+00:00", "value": "Made public." } ], "title": "Kernel: refcount leak in ctnetlink_create_conntrack()", "workarounds": [ { "lang": "en", "value": "Triggering this issue requires the ability to create user/net namespaces.\n\nOn non-containerized deployments of Red Hat Enterprise Linux 8, you can disable user namespaces by setting user.max_user_namespaces to 0:\n\n# echo \"user.max_user_namespaces=0\" \u003e /etc/sysctl.d/userns.conf\n# sysctl -p /etc/sysctl.d/userns.conf\n\nOn containerized deployments, such as Red Hat OpenShift Container Platform, do not use this mitigation as the functionality is needed to be enabled.\n\nAlternatively, skip loading the affected netfilter module (i.e., nf_conntrack_netlink) onto the system until we have a fix available. This can be done by a blacklist mechanism which will ensure the driver is not loaded at boot time.\n~~~\nHow do I blacklist a kernel module to prevent it from loading automatically?\nhttps://access.redhat.com/solutions/41278 \n~~~" } ], "x_redhatCweChain": "CWE-401: Missing Release of Memory after Effective Lifetime" } }, "cveMetadata": { "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2023-7192", "datePublished": "2024-01-02T19:02:45.371Z", "dateReserved": "2023-12-30T18:12:05.167Z", "dateUpdated": "2024-11-14T19:11:30.973Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }
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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.