Vulnerability Details CVE-2021-41087
in-toto-golang is a go implementation of the in-toto framework to protect software supply chain integrity. In affected versions authenticated attackers posing as functionaries (i.e., within a trusted set of users for a layout) are able to create attestations that may bypass DISALLOW rules in the same layout. An attacker with access to trusted private keys, may issue an attestation that contains a disallowed artifact by including path traversal semantics (e.g., foo vs dir/../foo). Exploiting this vulnerability is dependent on the specific policy applied. The problem has been fixed in version 0.3.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 38.6%
CVSS Severity
CVSS v3 Score 5.6
CVSS v2 Score 4.0
References
- https://github.com/in-toto/in-toto-golang/commit/f2c57d1e0f15e3ffbeac531829c696b72ecc4290
- https://github.com/in-toto/in-toto-golang/security/advisories/GHSA-vrxp-mg9f-hwf3
- https://github.com/in-toto/in-toto-golang/commit/f2c57d1e0f15e3ffbeac531829c696b72ecc4290
- https://github.com/in-toto/in-toto-golang/security/advisories/GHSA-vrxp-mg9f-hwf3
Products affected by CVE-2021-41087
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cpe:2.3:a:in-toto:in-toto-golang:*