CVE-2011-2495

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2011-06-27T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "fs/proc/base.c in the Linux kernel before 2.6.39.4 does not properly restrict access to /proc/#####/io files, which allows local users to obtain sensitive I/O statistics by polling a file, as demonstrated by discovering the length of another user's password."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2013-12-27T00:57:03.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"name": "[oss-security] 20110627 Re: CVE request: kernel: taskstats/procfs io infoleak", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2011/06/27/1"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/torvalds/linux/commit/1d1221f375c94ef961ba8574ac4f85c8870ddd51"}, {"name": "RHSA-2011:1212", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "http://rhn.redhat.com/errata/RHSA-2011-1212.html"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=716825"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1d1221f375c94ef961ba8574ac4f85c8870ddd51"}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-06T23:00:34.104Z"}, "title": "CVE Program Container", "references": [{"name": "[oss-security] 20110627 Re: CVE request: kernel: taskstats/procfs io infoleak", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2011/06/27/1"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/torvalds/linux/commit/1d1221f375c94ef961ba8574ac4f85c8870ddd51"}, {"name": "RHSA-2011:1212", "tags": ["vendor-advisory", "x_refsource_REDHAT", "x_transferred"], "url": "http://rhn.redhat.com/errata/RHSA-2011-1212.html"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=716825"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1d1221f375c94ef961ba8574ac4f85c8870ddd51"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2011-2495", "datePublished": "2012-06-13T10:00:00.000Z", "dateReserved": "2011-06-15T00:00:00.000Z", "dateUpdated": "2024-08-06T23:00:34.104Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "94597E40-EA22-414E-BF5A-A4664E943F09", "versionEndIncluding": "2.6.39.3", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:*:*:*:*:*:*:*", "matchCriteriaId": "EAAF54BC-6282-492F-BA52-8792223320ED", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc1:*:*:*:*:*:*", "matchCriteriaId": "2493C2FB-2BA1-4DB3-BC04-E282C9CD399D", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc2:*:*:*:*:*:*", "matchCriteriaId": "18DBC8AF-18ED-4879-8888-23022E494D14", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc3:*:*:*:*:*:*", "matchCriteriaId": "75EB375B-8ADF-4EAB-A3FB-ED5D35E5E719", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc4:*:*:*:*:*:*", "matchCriteriaId": "D49BB231-622E-4F20-97C8-E6289933912C", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc5:*:*:*:*:*:*", "matchCriteriaId": "2D6859AA-DA7F-4AF9-8443-05962171D6E3", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc6:*:*:*:*:*:*", "matchCriteriaId": "9B79A89D-F048-48C5-B148-4B38A6C3953B", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:rc7:*:*:*:*:*:*", "matchCriteriaId": "BEBA9217-9105-4BA3-BE1E-FE387FECEF87", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39.1:*:*:*:*:*:*:*", "matchCriteriaId": "1713DDF4-33F1-4716-84D7-FCFECCF9BCCA", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39.2:*:*:*:*:*:*:*", "matchCriteriaId": "ABCE5879-317D-4A33-B6DA-A9ACF553F8E9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "fs/proc/base.c in the Linux kernel before 2.6.39.4 does not properly restrict access to /proc/#####/io files, which allows local users to obtain sensitive I/O statistics by polling a file, as demonstrated by discovering the length of another user's password."}, {"lang": "es", "value": "fs/proc/base.c del kernel de Linux en versiones anteriores a la 2.6.39.4 no restringe el acceso apropiadamente a los archivos /proc/#####/io, lo que facilita a usuarios locales obtener estad\u00edsticas sobre I/O confidenciales consultando un archivo, como se ha demostrado descubriendo la lengitud de la contrase\u00f1a de otro usuario."}], "id": "CVE-2011-2495", "lastModified": "2026-06-16T23:31:27.107", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"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, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2012-06-13T10:24:55.827", "references": [{"source": "secalert@redhat.com", "url": "http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4"}, {"source": "secalert@redhat.com", "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1d1221f375c94ef961ba8574ac4f85c8870ddd51"}, {"source": "secalert@redhat.com", "url": "http://rhn.redhat.com/errata/RHSA-2011-1212.html"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2011/06/27/1"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=716825"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Patch"], "url": "https://github.com/torvalds/linux/commit/1d1221f375c94ef961ba8574ac4f85c8870ddd51"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1d1221f375c94ef961ba8574ac4f85c8870ddd51"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://rhn.redhat.com/errata/RHSA-2011-1212.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2011/06/27/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=716825"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Patch"], "url": "https://github.com/torvalds/linux/commit/1d1221f375c94ef961ba8574ac4f85c8870ddd51"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-264"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Vasiliy Kulikov (Openwall) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2011:1212", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "kernel-0:2.6.18-274.3.1.el5", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2011-09-06T00:00:00Z"}, {"advisory": "RHSA-2011:1813", "cpe": "cpe:/o:redhat:rhel_eus:5.6", "package": "kernel-0:2.6.18-238.31.1.el5", "product_name": "Red Hat Enterprise Linux 5.6 EUS - Server Only", "release_date": "2011-12-13T00:00:00Z"}, {"advisory": "RHSA-2011:1189", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "kernel-0:2.6.32-131.12.1.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2011-08-23T00:00:00Z"}, {"advisory": "RHSA-2011:1253", "cpe": "cpe:/a:redhat:enterprise_mrg:2:server:el6", "package": "kernel-rt-0:2.6.33.9-rt31.75.el6rt", "product_name": "Red Hat Enterprise MRG 2", "release_date": "2011-09-12T00:00:00Z"}], "bugzilla": {"description": "kernel: /proc/PID/io infoleak", "id": "716825", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=716825"}, "csaw": false, "cvss": {"cvss_base_score": "2.1", "cvss_scoring_vector": "AV:L/AC:L/Au:N/C:P/I:N/A:N", "status": "verified"}, "details": ["fs/proc/base.c in the Linux kernel before 2.6.39.4 does not properly restrict access to /proc/#####/io files, which allows local users to obtain sensitive I/O statistics by polling a file, as demonstrated by discovering the length of another user's password."], "name": "CVE-2011-2495", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 4"}], "public_date": "2011-06-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2011-2495\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-2495"], "statement": "This has been addressed in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-1212.html, https://rhn.redhat.com/errata/RHSA-2011-1189.html, and https://rhn.redhat.com/errata/RHSA-2011-1253.html. Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore the fix for this issue is not currently planned to be included in the future updates.", "threat_severity": "Low"}

{}