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GoogleOSV:CVE-2020-36478HistoryAug 23, 2021 - 2:15 a.m.
CVE-2020-36478
2021-08-2302:15:07
Google
osv.dev
9
mbed tls
cve-2020-36478
null algorithm parameters
invalid certificates
An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). A NULL algorithm parameters entry looks identical to an array of REAL (size zero) and thus the certificate is considered valid. However, if the parameters do not match in any way, then the certificate should be considered invalid.
References
cert-portal.siemens.com/productcert/pdf/ssa-756638.pdf
github.com/ARMmbed/mbedtls/issues/3629
github.com/ARMmbed/mbedtls/releases/tag/v2.16.9
github.com/ARMmbed/mbedtls/releases/tag/v2.25.0
github.com/ARMmbed/mbedtls/releases/tag/v2.7.18
lists.debian.org/debian-lts-announce/2021/11/msg00021.html
lists.debian.org/debian-lts-announce/2022/12/msg00036.html
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