Description
In sig_verify() in x509.c in axTLS version 2.1.3 and before, the PKCS#1 v1.5 signature verification blindly trusts the declared lengths in the ASN.1 structure. Consequently, when small public exponents are being used, a remote attacker can generate purposefully crafted signatures (and put them on X.509 certificates) to induce illegal memory access and crash the verifier.
Published: 2018-11-07
Score: 5.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2018-8004 In sig_verify() in x509.c in axTLS version 2.1.3 and before, the PKCS#1 v1.5 signature verification blindly trusts the declared lengths in the ASN.1 structure. Consequently, when small public exponents are being used, a remote attacker can generate purposefully crafted signatures (and put them on X.509 certificates) to induce illegal memory access and crash the verifier.
History

No history.

Subscriptions

Axtls Project Axtls
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T10:17:37.778Z

Reserved: 2018-08-29T00:00:00.000Z

Link: CVE-2018-16149

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-11-07T20:29:00.557

Modified: 2024-11-21T03:52:10.320

Link: CVE-2018-16149

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses