gsd-2017-18344
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).
Aliases
Aliases
{ "GSD": { "alias": "CVE-2017-18344", "description": "The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn\u0027t properly validate the sigevent-\u003esigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).", "id": "GSD-2017-18344", "references": [ "https://www.suse.com/security/cve/CVE-2017-18344.html", "https://access.redhat.com/errata/RHSA-2018:3591", "https://access.redhat.com/errata/RHSA-2018:3590", "https://access.redhat.com/errata/RHSA-2018:3586", "https://access.redhat.com/errata/RHSA-2018:3540", "https://access.redhat.com/errata/RHSA-2018:3459", "https://access.redhat.com/errata/RHSA-2018:3096", "https://access.redhat.com/errata/RHSA-2018:3083", "https://access.redhat.com/errata/RHSA-2018:2948", "https://ubuntu.com/security/CVE-2017-18344", "https://advisories.mageia.org/CVE-2017-18344.html", "https://linux.oracle.com/cve/CVE-2017-18344.html", "https://packetstormsecurity.com/files/cve/CVE-2017-18344" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2017-18344" ], "details": "The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn\u0027t properly validate the sigevent-\u003esigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).", "id": "GSD-2017-18344", "modified": "2023-12-13T01:21:10.337638Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "cve@mitre.org", "ID": "CVE-2017-18344", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "n/a", "version": { "version_data": [ { "version_value": "n/a" } ] } } ] }, "vendor_name": "n/a" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn\u0027t properly validate the sigevent-\u003esigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE)." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "references": { "reference_data": [ { "name": "RHSA-2018:3540", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2018:3540" }, { "name": "RHSA-2018:3083", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2018:3083" }, { "name": "RHSA-2018:3591", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2018:3591" }, { "name": "RHSA-2018:3459", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2018:3459" }, { "name": "1041414", "refsource": "SECTRACK", "url": "http://www.securitytracker.com/id/1041414" }, { "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8", "refsource": "MISC", "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8" }, { "name": "RHSA-2018:3590", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2018:3590" }, { "name": "RHSA-2018:2948", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2018:2948" }, { "name": "https://github.com/torvalds/linux/commit/cef31d9af908243421258f1df35a4a644604efbe", "refsource": "MISC", "url": "https://github.com/torvalds/linux/commit/cef31d9af908243421258f1df35a4a644604efbe" }, { "name": "USN-3742-2", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/3742-2/" }, { "name": "104909", "refsource": "BID", "url": "http://www.securityfocus.com/bid/104909" }, { "name": "USN-3742-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/3742-1/" }, { "name": "RHSA-2018:3586", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2018:3586" }, { "name": "45175", "refsource": "EXPLOIT-DB", "url": "https://www.exploit-db.com/exploits/45175/" }, { "name": "RHSA-2018:3096", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2018:3096" } ] } }, "nvd.nist.gov": { "configurations": { "CVE_data_version": "4.0", "nodes": [ { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndExcluding": "4.14.8", "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:a:redhat:mrg_realtime:2.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" } ] }, "cve": { "CVE_data_meta": { "ASSIGNER": "cve@mitre.org", "ID": "CVE-2017-18344" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "en", "value": "The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn\u0027t properly validate the sigevent-\u003esigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE)." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "CWE-125" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/torvalds/linux/commit/cef31d9af908243421258f1df35a4a644604efbe", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/torvalds/linux/commit/cef31d9af908243421258f1df35a4a644604efbe" }, { "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8", "refsource": "MISC", "tags": [ "Third Party Advisory" ], "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8" }, { "name": "104909", "refsource": "BID", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/104909" }, { "name": "1041414", "refsource": "SECTRACK", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securitytracker.com/id/1041414" }, { "name": "45175", "refsource": "EXPLOIT-DB", "tags": [ "Exploit", "Third Party Advisory", "VDB Entry" ], "url": "https://www.exploit-db.com/exploits/45175/" }, { "name": "USN-3742-2", "refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/3742-2/" }, { "name": "USN-3742-1", "refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/3742-1/" }, { "name": "RHSA-2018:3096", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2018:3096" }, { "name": "RHSA-2018:3083", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2018:3083" }, { "name": "RHSA-2018:2948", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2018:2948" }, { "name": "RHSA-2018:3459", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2018:3459" }, { "name": "RHSA-2018:3591", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2018:3591" }, { "name": "RHSA-2018:3590", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2018:3590" }, { "name": "RHSA-2018:3586", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2018:3586" }, { "name": "RHSA-2018:3540", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2018:3540" } ] } }, "impact": { "baseMetricV2": { "acInsufInfo": false, "cvssV2": { "accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.1, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0" }, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "LOW", "userInteractionRequired": false }, "baseMetricV3": { "cvssV3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.0" }, "exploitabilityScore": 1.8, "impactScore": 3.6 } }, "lastModifiedDate": "2020-10-15T13:28Z", "publishedDate": "2018-07-26T19:29Z" } } }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- 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.