公告ID: KYLIN-2019-1547
安全等级: 中等
产品: Kylin V3
发布日期: 2019年9月10日
CVE: CVE-2019-1547
CVSS3评分: 5.5
概述:
None 描述:
Normally in OpenSSL EC groups always have a co-factor present and this is used in side channel resistant code paths. However, in some cases, it is possible to construct a group using explicit parameters (instead of using a named curve). In those cases it is possible that such a group does not have the cofactor present. This can occur even where all the parameters match a known named curve. If such a curve is used then OpenSSL falls back to non-side channel resistant code paths which may result in full key recovery during an ECDSA signature operation. In order to be vulnerable an attacker would have to have the ability to time the creation of a large number of signatures where explicit parameters with no co-factor present are in use by an application using libcrypto. For the avoidance of doubt libssl is not vulnerable because explicit parameters are never used. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s). 系统版本:
KYLIN 3.0.x
KYLIN 3.2.x
KYLIN 3.3.x
KYLIN 3.4.x
KYLIN 3.4.x
受影响包列表:
openssl
openssl
openssl
mingw-openssl
openssl