ROCA — Acer C720 Chromebook Vulnerability
CVE-2017-15361
The Infineon RSA library 1.02.013 in Infineon Trusted Platform Module (TPM) firmware, such as versions before 0000000000000422 - 4.34, before 000000000000062b - 6.43, and before 0000000000008521 - 133.33, mishandles RSA key generation, which makes it easier for attackers to defeat various cryptographic protection mechanisms via targeted attacks, aka ROCA. Examples of affected technologies include BitLocker with TPM 1.2, YubiKey 4 (before 4.3.5) PGP key generation, and the Cached User Data encryption feature in Chrome OS.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.098 (95.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.098 · newest: 0.098 · change: 0.000
Affected products
Public proof-of-concept exploits
References
- www.infineon.com/cms/en/product/promopages/tpm-update/ (Mitigation, Vendor Advisory)
- dan.enigmabridge.com/roca-vulnerability-impact-on-gemalto-idprime-net-smart-car… (Third Party Advisory, Issue Tracking)
- blog.cr.yp.to/20171105-infineon.html
- support.hpe.com/hpsc/doc/public/display
- monitor.certipath.com/rsatest (Third Party Advisory, Mitigation)
- ics-cert.us-cert.gov/advisories/ICSA-18-058-01
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV170012 (Patch, Third Party Advisory, Issue Tracking)
- crocs.fi.muni.cz/public/papers/rsa_ccs17 (Third Party Advisory, Mitigation, Issue Tracking)
- arstechnica.com/information-technology/2017/10/crypto-failure-cripples-millions… (Third Party Advisory, Issue Tracking)
- support.lenovo.com/us/en/product_security/LEN-15552 (Third Party Advisory, Mitigation)
Frequently asked questions
- What is CVE-2017-15361?
- CVE-2017-15361 is a medium-severity vulnerability in Acer C720 Chromebook. CVSS score: 5.9/10. Published 2017-10-16.
- How severe is CVE-2017-15361?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2017-15361 known to be exploited?
- 28 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.