trailofbits rfc3161-client up to 1.0.2 signature verification

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in trailofbits rfc3161-client up to 1.0.2. This issue affects some unknown processing. Executing a manipulation can lead to signature verification. This vulnerability is registered as CVE-2025-52556. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in trailofbits rfc3161-client up to 1.0.2. This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a signature verification vulnerability. The CWE definition for the vulnerability is CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. As an impact it is known to affect integrity. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability was named CVE-2025-52556 since 06/18/2025. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

Upgrading to version 1.0.3 eliminates this vulnerability. Applying the patch 724a184f953e3f171f85cb223871172b41b0d0dc is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-18798). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Signature verification
CWE: CWE-347 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: rfc3161-client 1.0.3
Patch: 724a184f953e3f171f85cb223871172b41b0d0dc

Timelineinfo

06/18/2025 🔍
06/21/2025 +3 days 🔍
06/21/2025 +0 days 🔍
06/21/2025 +0 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-6qhv-4h7r-2g9m
Status: Confirmed

CVE: CVE-2025-52556 (🔍)
GCVE (CVE): GCVE-0-2025-52556
GCVE (VulDB): GCVE-100-313570
EUVD: 🔍

Entryinfo

Created: 06/21/2025 07:03
Updated: 06/21/2025 07:12
Changes: 06/21/2025 07:03 (69), 06/21/2025 07:12 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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