{"id":"CVE-2022-48303","title":"GNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of uninitialized memory for a conditional jump","summary":"GNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of uninitialized memory for a conditional jump. Exploitation to change the flow of control has not been demonstrated. The issue occurs in from_header in list.c vi…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-125"],"vendor":"gnu","product":"tar","affected":["tar <= 1.34","fedora = 37","fedora = 38"],"published":"2023-01-30","updated":"2026-10-14","sourceUpdated":"2026-10-14T19:16:56.197","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-48303","references":[{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CRY7VEL4AIG3GLIEVCTOXRZNSVYDYYUD/","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X5VQYCO52Z7GAVCLRYUITN7KXHLRZQS4/","label":"cve@mitre.org"},{"url":"https://savannah.gnu.org/bugs/?62387","label":"cve@mitre.org"},{"url":"https://savannah.gnu.org/patch/?10307","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CRY7VEL4AIG3GLIEVCTOXRZNSVYDYYUD/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X5VQYCO52Z7GAVCLRYUITN7KXHLRZQS4/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://savannah.gnu.org/bugs/?62387","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://savannah.gnu.org/patch/?10307","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-806742.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.01493,"epssPercentile":0.74009,"ingestedAt":"2026-10-14T19:49:57.529Z","exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2025-03-27T20:34:11.069640Z"},"slug":"CVE-2022-48303","body":"## Overview\n\nGNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of uninitialized memory for a conditional jump. Exploitation to change the flow of control has not been demonstrated. The issue occurs in from_header in list.c via a V7 archive in which mtime has approximately 11 whitespace characters.\n\n## Affected\n\n- `tar <= 1.34`\n- `fedora = 37`\n- `fedora = 38`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":30.3,"likelihood":0.3,"exploitation":12,"ransomware":0},"changes":[{"seq":221835,"id":"CVE-2022-48303","ts":1792035847465,"field":"exploit_available","old":"false","new":"true"}]}