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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.73%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.73% probability · 52th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- oasis-open/oasis digital signature services
- Source
- cve@mitre.org
References
- https://www.oasis-open.org/apps/org/workgroup/dss-x/Permissions Required, Vendor Advisory
- https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=dss-xVendor Advisory
- https://www.oasis-open.org/standards#dssv1.0Vendor Advisory
- https://www.oasis-open.org/apps/org/workgroup/dss-x/Permissions Required, Vendor Advisory
- https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=dss-xVendor Advisory
- https://www.oasis-open.org/standards#dssv1.0Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.