Vulnerability in Oasis-Open Oasis Digital Signature Services
CVE-2020-13101
In OASIS Digital Signature Services (DSS) 1.0, an attacker can control the validation outcome (i.e., trigger either a valid or invalid outcome for a valid or invalid signature) via a crafted XML signature, when the InlineXML option is used. This defeats the expectation of non-repudiation.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.007 (52.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Oasis-Open Oasis Digital Signature Services — versions 1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.oasis-open.org/standards (Vendor Advisory)
- www.oasis-open.org/committees/tc_home.php (Vendor Advisory)
- www.oasis-open.org/apps/org/workgroup/dss-x/ (Permissions Required, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-13101?
- CVE-2020-13101 is a high-severity vulnerability in Oasis-Open Oasis Digital Signature Services, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.5/10. Published 2020-08-24.
- How severe is CVE-2020-13101?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-13101 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.