GHSA-xxxq-chmp-67g4
Dashboard / Vulnerabilities / GHSA-xxxq-chmp-67g4
Summary: RSA PKCS#1 decryption vulnerability with prepending zeros in jsrsasign
Details: ### Impact Jsrsasign supports RSA PKCS#1 v1.5 (i.e. RSAES-PKCS1-v1_5) and RSA-OAEP encryption and decryption. Its encrypted message is represented as BigInteger. When there is a valid encrypted message, a crafted message with prepending zeros can be decrypted by this vulnerability. - If you don't use RSA PKCS1-v1_5 or RSA-OAEP decryption, this vulnerability is not affected. - Risk to forge contents of encrypted message is very low. - Risk to raise memory corruption is low since jsrsasign uses BigInteger class. ### Patches Users using RSA PKCS1-v1_5 or RSA-OAEP decryption should upgrade to 8.0.18. ### Workarounds Reject RSA PKCS1-v1_5 or RSA-OAEP encrypted message with unnecessary prepending zeros. ### References https://nvd.nist.gov/vuln/detail/CVE-2020-14967 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14967 https://vuldb.com/?id.157124 https://kjur.github.io/jsrsasign/api/symbols/KJUR.crypto.Cipher.html#.decrypt https://github.com/kjur/jsrsasign/issues/439
References: https://github.com/kjur/jsrsasign/security/advisories/GHSA-xxxq-chmp-67g4, https://nvd.nist.gov/vuln/detail/CVE-2020-14967, https://github.com/kjur/jsrsasign/issues/439, https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14967, https://github.com/kjur/jsrsasign, https://github.com/kjur/jsrsasign/releases/tag/8.0.17, https://github.com/kjur/jsrsasign/releases/tag/8.0.18, https://kjur.github.io/jsrsasign, https://kjur.github.io/jsrsasign/api/symbols/KJUR.crypto.Cipher.html#.decrypt, https://security.netapp.com/advisory/ntap-20200724-0001, https://vuldb.com/?id.157124, https://www.npmjs.com/package/jsrsasign
Affected packages
Package
Name: jsrsasign
Purl: pkg:npm/jsrsasign
Affected ranges
Type: SEMVER
Events:
