CVE-2026-4601
HIGH8.7EPSS 0.02%jsrsasign: Missing cryptographic validation during DSA signing enables private key extraction
發布日:2026/3/23修改日:2026/3/29
描述
Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.crypto.DSA.signWithMessageHash process in the DSA signing implementation. An attacker can recover the private key by forcing r or s to be zero, so the library emits an invalid signature without retrying, and then solves for x from the resulting signature.
受影響套件(1)
- npm/jsrsasignfrom 0, < 11.1.1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:H/SA:N/E:P |
| osv | CVSS 3.1 | HIGH8.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N |
參考連結(6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-4601
- PATCHhttps://github.com/kjur/jsrsasign
- WEBhttps://gist.github.com/Kr0emer/93789fe6efe5519db9692d4ad1dad586
- WEBhttps://github.com/kjur/jsrsasign/commit/0710e392ec35de697ce11e4219c988ba2b5fe0eb
- WEBhttps://github.com/kjur/jsrsasign/pull/645
- WEBhttps://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370941