GHSA-q3gh-5r98-j4h3
Dashboard / Vulnerabilities / GHSA-q3gh-5r98-j4h3
Summary: RSA-PSS signature validation vulnerability by prepending zeros in jsrsasign
Details: ### Impact Jsrsasign can verify RSA-PSS signature which value can expressed as BigInteger. When there is a valid RSA-PSS signature value, this vulnerability is also accept value with prepending zeros as a valid signature. - If you are not use RSA-PSS signature validation, this vulnerability is not affected. - Risk to accept a forged or crafted message to be signed is low. - Risk to raise memory corruption is low since jsrsasign uses BigInteger class. ### Patches Users using RSA-PSS signature validation should upgrade to 8.0.17. ### Workarounds Reject RSA-PSS signatures with unnecessary prepending zeros. ### References https://github.com/kjur/jsrsasign/security/advisories/GHSA-q3gh-5r98-j4h3 [https://github.com/kjur/jsrsasign/issues/438](https://github.com/kjur/jsrsasign/issues/438) https://nvd.nist.gov/vuln/detail/CVE-2020-14968 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14968 https://vuldb.com/?id.157125 https://kjur.github.io/jsrsasign/api/symbols/RSAKey.html#.verifyWithMessageHashPSS
References: https://github.com/kjur/jsrsasign/security/advisories/GHSA-q3gh-5r98-j4h3, https://nvd.nist.gov/vuln/detail/CVE-2020-14968, https://github.com/kjur/jsrsasign/issues/438, https://github.com/kjur/jsrsasign/commit/3bcc088c727658d7235854cd2a409a904cc2ce99, https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14968, 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/RSAKey.html#.verifyWithMessageHashPSS, https://security.netapp.com/advisory/ntap-20200724-0001, https://vuldb.com/?id.157125, https://www.npmjs.com/advisories/1541, https://www.npmjs.com/package/jsrsasign
Affected packages
Package
Name: jsrsasign
Purl: pkg:npm/jsrsasign
Affected ranges
Type: SEMVER
Events:
