Path Traversal in In-Toto In-Toto-Golang
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- In-Toto In-Toto-Golang — versions < 0.3.0
Weakness classification (CWE)
References
- github.com/in-toto/in-toto-golang/security/advisories/GHSA-vrxp-mg9f-hwf3 (Third Party Advisory)
- github.com/in-toto/in-toto-golang/commit/f2c57d1e0f15e3ffbeac531829c696b72ecc42… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-41087?
- CVE-2021-41087 is a medium-severity vulnerability in In-Toto In-Toto-Golang, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.6/10. Published 2021-09-21.
- How severe is CVE-2021-41087?
- Medium severity. CVSS v3 base score is 5.6 out of 10.