Improper input validation in Google Go-Attestation
CVE-2022-0317
An improper input validation vulnerability in go-attestation before 0.3.3 allows local users to provide a maliciously-formed Quote over no/some PCRs, causing AKPublic.Verify to succeed despite the inconsistency. Subsequent use of the same set of PCR values in Eventlog.Verify lacks the authentication performed by quote verification, meaning a local attacker could couple this vulnerability with a maliciously-crafted TCG log in Eventlog.Verify to spoof events in the TCG log, hence defeating remotely-attested measured-boot. We recommend upgrading to Version 0.4.0 or above.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.001 (0.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 0.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
- Google Go-Attestation
- Google Llc Go-Attestation — versions unspecified
Weakness classification (CWE)
References
- github.com/google/go-attestation/security/advisories/GHSA-99cg-575x-774p (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-0317?
- CVE-2022-0317 is a medium-severity vulnerability in Google Go-Attestation, classified under Improper Input Validation. CVSS score: 4.0/10. Published 2022-02-04.
- How severe is CVE-2022-0317?
- Medium severity. CVSS v3 base score is 4.0 out of 10.