{"id":"PYSEC-2018-31","details":"tlslite-ng version 0.7.3 and earlier, since commit d7b288316bca7bcdd082e6ccff5491e241305233 contains a CWE-354: Improper Validation of Integrity Check Value vulnerability in TLS implementation, tlslite/utils/constanttime.py: ct_check_cbc_mac_and_pad(); line \"end_pos = data_len - 1 - mac.digest_size\" that can result in an attacker manipulating the TLS ciphertext which will not be detected by receiving tlslite-ng. This attack appears to be exploitable via man in the middle on a network connection. This vulnerability appears to have been fixed after commit 3674815d1b0f7484454995e2737a352e0a6a93d8.","aliases":["CVE-2018-1000159","GHSA-cwh5-3cw7-4286"],"modified":"2023-11-08T03:59:36.197516Z","published":"2018-04-18T19:29:00Z","references":[{"type":"WEB","url":"https://github.com/tomato42/tlslite-ng/pull/234"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-cwh5-3cw7-4286"}],"affected":[{"package":{"name":"tlslite-ng","ecosystem":"PyPI","purl":"pkg:pypi/tlslite-ng"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.4"}]}],"versions":["0.5.0","0.5.0-beta1","0.5.0-beta2","0.5.0-beta3","0.5.0-beta4","0.5.0-beta5","0.5.0-beta6","0.5.1","0.5.2","0.6.0","0.6.0-alpha1","0.6.0-alpha2","0.6.0-alpha3","0.6.0-alpha4","0.6.0-alpha5","0.6.0-beta1","0.7.0","0.7.0-alpha1","0.7.0-alpha2","0.7.0-alpha3","0.7.0-alpha4","0.7.0-alpha5","0.7.0-alpha6","0.7.0-alpha7","0.7.0-alpha8","0.7.0-alpha9","0.7.0-beta1","0.7.1","0.7.2","0.7.3"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/tlslite-ng/PYSEC-2018-31.yaml"}}],"schema_version":"1.7.3"}