Description
rfc3161-client is a Python library implementing the Time-Stamp Protocol (TSP) described in RFC 3161. Prior to version 1.0.3, there is a flaw in the timestamp response signature verification logic. In particular, chain verification is performed against the TSR's embedded certificates up to the trusted root(s), but fails to verify the TSR's own signature against the timestamping leaf certificates. Consequently, vulnerable versions perform insufficient signature validation to properly consider a TSR verified, as the attacker can introduce any TSR signature so long as the embedded leaf chains up to some root TSA. This issue has been patched in version 1.0.3. There is no workaround for this issue.
INFO
Published Date :
2025-06-21T01:33:18.829Z
Last Modified :
2025-06-23T15:13:49.905Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2025-52556 vulnerability.
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REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2025-52556.
