Botan Vulnerable to Denial of Service Due to Overly Large Elliptic Curve Parameters
概要
Botan Vulnerable to Denial of Service Due to Overly Large Elliptic Curve Parameters
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
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. Prior to versions 3.3.0 and 2.19.4, an attacker could present an ECDSA X.509 certificate using explicit encoding where the parameters are very large. The proof of concept used a 16Kbit prime for this purpose. When parsing, the parameter is checked to be prime, causing excessive computation. This was patched in 2.19.4 and 3.3.0 to allow the prime parameter of the elliptic curve to be at most 521 bits. No known workarounds are available. Note that support for explicit encoding of elliptic curve parameters is deprecated in Botan.
出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- Debian DEBIAN-CVE-2024-34703 botan
参照URL
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com
- patch github.com