CVE-2024-39312: medium-severity vulnerability in randombit botan
Botan has an Authorization Error due to Name Constraint Decoding Bug
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.3%
Botan is a C++ cryptography library. X.509 certificates can identify elliptic curves using either an object identifier or using explicit encoding of the parameters. A bug in the parsing of name constraint extensions in X.509 certificates meant that if the extension included both permitted subtrees and excluded subtrees, only the permitted subtree would be checked. If a certificate included a name which was permitted by the permitted subtree but also excluded by excluded subtree, it would be accepted. Fixed in versions 3.5.0 and 2.19.5.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected products
randombit · botanRelated CVEs — randombit botan
In the same product, most dangerous first.
CVE-2024-34702MEDIUMBotan has a Denial of Service Due to Excessive Name ConstraintsEPSS 0.8%CVE-2024-34703HIGHBotan Vulnerable to Denial of Service Due to Overly Large Elliptic Curve ParametersEPSS 0.5%CVE-2026-34580CRITICALBotan has a certificate authentication bypass due to trust anchor confusionEPSS 0.5%CVE-2026-118769CRITICALBotan: Integer overflow when reporting block size in FFI can cause memory corruptionEPSS 0.4%CVE-2026-44378MEDIUMBotan: Quadratic complexity decoding BER indefinite length encodingsEPSS 0.3%CVE-2026-32877HIGHBotan: Heap Buffer Over-read in SM2 Decryption via Undersized C3 Hash FieldEPSS 0.3%