gsd-2018-20482
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user's process (e.g., a system backup running as root).
Aliases
Aliases
{ "GSD": { "alias": "CVE-2018-20482", "description": "GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user\u0027s process (e.g., a system backup running as root).", "id": "GSD-2018-20482", "references": [ "https://www.suse.com/security/cve/CVE-2018-20482.html", "https://ubuntu.com/security/CVE-2018-20482", "https://advisories.mageia.org/CVE-2018-20482.html", "https://security.archlinux.org/CVE-2018-20482" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2018-20482" ], "details": "GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user\u0027s process (e.g., a system backup running as root).", "id": "GSD-2018-20482", "modified": "2023-12-13T01:22:29.534685Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "cve@mitre.org", "ID": "CVE-2018-20482", "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": "GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user\u0027s process (e.g., a system backup running as root)." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "references": { "reference_data": [ { "name": "https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug", "refsource": "MISC", "url": "https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug" }, { "name": "http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454", "refsource": "MISC", "url": "http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454" }, { "name": "[debian-lts-announce] 20181231 [SECURITY] [DLA 1623-1] tar security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2018/12/msg00023.html" }, { "name": "https://news.ycombinator.com/item?id=18745431", "refsource": "MISC", "url": "https://news.ycombinator.com/item?id=18745431" }, { "name": "106354", "refsource": "BID", "url": "http://www.securityfocus.com/bid/106354" }, { "name": "GLSA-201903-05", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/201903-05" }, { "name": "http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html", "refsource": "MISC", "url": "http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html" }, { "name": "https://twitter.com/thatcks/status/1076166645708668928", "refsource": "MISC", "url": "https://twitter.com/thatcks/status/1076166645708668928" }, { "name": "openSUSE-SU-2019:1237", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html" }, { "name": "[debian-lts-announce] 20211128 [SECURITY] [DLA 2830-1] tar security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00025.html" } ] } }, "nvd.nist.gov": { "configurations": { "CVE_data_version": "4.0", "nodes": [ { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndIncluding": "1.30", "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "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:15.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" } ] }, "cve": { "CVE_data_meta": { "ASSIGNER": "cve@mitre.org", "ID": "CVE-2018-20482" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "en", "value": "GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user\u0027s process (e.g., a system backup running as root)." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "CWE-835" } ] } ] }, "references": { "reference_data": [ { "name": "https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug" }, { "name": "https://twitter.com/thatcks/status/1076166645708668928", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://twitter.com/thatcks/status/1076166645708668928" }, { "name": "https://news.ycombinator.com/item?id=18745431", "refsource": "MISC", "tags": [ "Exploit", "Third Party Advisory" ], "url": "https://news.ycombinator.com/item?id=18745431" }, { "name": "http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html", "refsource": "MISC", "tags": [ "Third Party Advisory" ], "url": "http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html" }, { "name": "[debian-lts-announce] 20181231 [SECURITY] [DLA 1623-1] tar security update", "refsource": "MLIST", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.debian.org/debian-lts-announce/2018/12/msg00023.html" }, { "name": "106354", "refsource": "BID", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/106354" }, { "name": "http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454" }, { "name": "GLSA-201903-05", "refsource": "GENTOO", "tags": [ "Third Party Advisory" ], "url": "https://security.gentoo.org/glsa/201903-05" }, { "name": "openSUSE-SU-2019:1237", "refsource": "SUSE", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html" }, { "name": "[debian-lts-announce] 20211128 [SECURITY] [DLA 2830-1] tar security update", "refsource": "MLIST", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00025.html" } ] } }, "impact": { "baseMetricV2": { "acInsufInfo": false, "cvssV2": { "accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 1.9, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0" }, "exploitabilityScore": 3.4, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "LOW", "userInteractionRequired": false }, "baseMetricV3": { "cvssV3": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "exploitabilityScore": 1.0, "impactScore": 3.6 } }, "lastModifiedDate": "2021-11-30T19:52Z", "publishedDate": "2018-12-26T18:29Z" } } }
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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.
- 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.