Vulnerability Details CVE-2018-16149
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 69.8%
CVSS Severity
CVSS v3 Score 5.9
CVSS v2 Score 4.3
References
Products affected by CVE-2018-16149
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cpe:2.3:a:axtls_project:axtls:1.4.2
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cpe:2.3:a:axtls_project:axtls:1.4.3
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cpe:2.3:a:axtls_project:axtls:1.4.4
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cpe:2.3:a:axtls_project:axtls:1.4.5
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cpe:2.3:a:axtls_project:axtls:1.4.6
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cpe:2.3:a:axtls_project:axtls:1.4.8
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cpe:2.3:a:axtls_project:axtls:1.4.9
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cpe:2.3:a:axtls_project:axtls:1.5.0
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cpe:2.3:a:axtls_project:axtls:1.5.1
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cpe:2.3:a:axtls_project:axtls:1.5.2
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cpe:2.3:a:axtls_project:axtls:1.5.3
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cpe:2.3:a:axtls_project:axtls:1.5.4
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cpe:2.3:a:axtls_project:axtls:2.0.0
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cpe:2.3:a:axtls_project:axtls:2.0.1
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cpe:2.3:a:axtls_project:axtls:2.1.0
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cpe:2.3:a:axtls_project:axtls:2.1.1
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cpe:2.3:a:axtls_project:axtls:2.1.2
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cpe:2.3:a:axtls_project:axtls:2.1.3