CVE-2017-11424
HIGH7.5EPSS 0.19%pyjwt - security update
發布日:2022/5/13修改日:2026/4/28
描述
In PyJWT 1.5.0 and below the `invalid_strings` check in `HMACAlgorithm.prepare_key` does not account for all PEM encoded public keys. Specifically, the PKCS1 PEM encoded format would be allowed because it is prefaced with the string `-----BEGIN RSA PUBLIC KEY-----` which is not accounted for. This enables symmetric/asymmetric key confusion attacks against users using the PKCS1 PEM encoded public keys, which would allow an attacker to craft JWTs from scratch.
受影響套件(4)
- Debian/pyjwtfrom 0, < 1.4.2-1.1
- Debian/pyjwtfrom 0, < 0.2.1-1+deb8u2
- PyPI/pyjwtfrom 0, < 1.5.1
- PyPI/pyjwtfrom 0, < 1.5.1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
參考連結(7)
- ADVISORYhttps://github.com/advisories/GHSA-r9jw-mwhq-wp62
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2017-11424
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2017-11424
- PATCHhttps://github.com/jpadilla/pyjwt
- WEBhttps://github.com/jpadilla/pyjwt/pull/277
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/pyjwt/PYSEC-2017-24.yaml
- WEBhttp://www.debian.org/security/2017/dsa-3979