{"id":"CVE-2026-34155","state":"PUBLISHED","title":"RAUC: Improper Signing of Plain Bundles Exceeding 2 GiB","description":"RAUC controls the update process on embedded Linux systems. Prior to version 1.15.2, RAUC bundles using the 'plain' format exceeding a payload size of 2 GiB cause an integer overflow which results in a signature which covers only the first few bytes of the payload. Given such a bundle with a legitimate signature, an attacker can modify the part of the payload which is not covered by the signature. This issue has been patched in version 1.15.2.","publishedAt":"2026-03-31T13:28:14.863Z","updatedAt":"2026-03-31T15:45:04.506Z","severity":{"score":7.2,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:H/SI:H/SA:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["rauc rauc"],"affected":[{"vendor":"rauc","product":"rauc","versions":[{"version":"< 1.15.2","status":"affected"}]}],"references":["https://github.com/rauc/rauc/security/advisories/GHSA-6hj7-q844-m2hx","https://github.com/rauc/rauc/commit/4fb7c798d6ae412344fb8f8d310d773046af3441","https://github.com/rauc/rauc/releases/tag/v1.15.2"],"weaknesses":["CWE-196","CWE-347"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/34xxx/CVE-2026-34155.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-34155","state":"PUBLISHED","datePublished":"2026-03-31T13:28:14.863Z","dateUpdated":"2026-03-31T15:45:04.506Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-25T20:12:04.196Z"},"containers":{"cna":{"title":"RAUC: Improper Signing of Plain Bundles Exceeding 2 GiB","descriptions":[{"lang":"en","value":"RAUC controls the update process on embedded Linux systems. Prior to version 1.15.2, RAUC bundles using the 'plain' format exceeding a payload size of 2 GiB cause an integer overflow which results in a signature which covers only the first few bytes of the payload. Given such a bundle with a legitimate signature, an attacker can modify the part of the payload which is not covered by the signature. This issue has been patched in version 1.15.2."}],"affected":[{"vendor":"rauc","product":"rauc","versions":[{"version":"< 1.15.2","status":"affected"}]}],"references":[{"url":"https://github.com/rauc/rauc/security/advisories/GHSA-6hj7-q844-m2hx","name":"https://github.com/rauc/rauc/security/advisories/GHSA-6hj7-q844-m2hx","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/rauc/rauc/commit/4fb7c798d6ae412344fb8f8d310d773046af3441","name":"https://github.com/rauc/rauc/commit/4fb7c798d6ae412344fb8f8d310d773046af3441","tags":["x_refsource_MISC"]},{"url":"https://github.com/rauc/rauc/releases/tag/v1.15.2","name":"https://github.com/rauc/rauc/releases/tag/v1.15.2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"HIGH","baseScore":7.2,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:H/SI:H/SA:H","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-196","lang":"en","description":"CWE-196: Unsigned to Signed Conversion Error","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-347","lang":"en","description":"CWE-347: Improper Verification of Cryptographic Signature","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-31T13:28:14.863Z"},"source":{"advisory":"GHSA-6hj7-q844-m2hx","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-31T15:44:51.772152Z","id":"CVE-2026-34155","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-31T15:45:04.506Z"}}]}}}