Critical severity9.8NVD Advisory· Published Jun 22, 2020· Updated Jun 22, 2026
CVE-2020-14967
CVE-2020-14967
Description
An issue was discovered in the jsrsasign package before 8.0.18 for Node.js. Its RSA PKCS1 v1.5 decryption implementation does not detect ciphertext modification by prepending '\0' bytes to ciphertexts (it decrypts modified ciphertexts without error). An attacker might prepend these bytes with the goal of triggering memory corruption issues.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
jsrsasignnpm | < 8.0.18 | 8.0.18 |
Affected products
4- jsrsasign/jsrsasigndescription
Patches
Vulnerability mechanics
References
14- github.com/kjur/jsrsasign/issues/439nvdExploitIssue TrackingThird Party AdvisoryWEB
- github.com/advisories/GHSA-xxxq-chmp-67g4ghsaADVISORY
- github.com/kjur/jsrsasign/releases/tag/8.0.17nvdRelease NotesThird Party AdvisoryWEB
- github.com/kjur/jsrsasign/releases/tag/8.0.18nvdRelease NotesThird Party AdvisoryWEB
- kjur.github.io/jsrsasign/nvdRelease NotesThird Party Advisory
- nvd.nist.gov/vuln/detail/CVE-2020-14967ghsaADVISORY
- security.netapp.com/advisory/ntap-20200724-0001/nvdThird Party Advisory
- www.npmjs.com/package/jsrsasignnvdProductThird Party AdvisoryWEB
- cve.mitre.org/cgi-bin/cvename.cgighsaWEB
- github.com/kjur/jsrsasign/security/advisories/GHSA-xxxq-chmp-67g4ghsaWEB
- kjur.github.io/jsrsasignghsaWEB
- kjur.github.io/jsrsasign/api/symbols/KJUR.crypto.Cipher.htmlghsaWEB
- security.netapp.com/advisory/ntap-20200724-0001ghsaWEB
- vuldb.comghsaWEB
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