Executive Summary

NameCVE-2018-15453First vendor Publication2019-01-10
VendorCveLast vendor Modification2019-01-11

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base ScoreNot DefinedAttack RangeNot Defined
Cvss Impact ScoreNot DefinedAttack ComplexityNot Defined
Cvss Expoit ScoreNot DefinedAuthenticationNot Defined
Calculate full CVSS 2.0 Vectors scores


A vulnerability in the Secure/Multipurpose Internet Mail Extensions (S/MIME) Decryption and Verification or S/MIME Public Key Harvesting features of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to cause an affected device to corrupt system memory. A successful exploit could cause the filtering process to unexpectedly reload, resulting in a denial of service (DoS) condition on the device. The vulnerability is due to improper input validation of S/MIME-signed emails. An attacker could exploit this vulnerability by sending a malicious S/MIME-signed email through a targeted device. If Decryption and Verification or Public Key Harvesting is configured, the filtering process could crash due to memory corruption and restart, resulting in a DoS condition. The software could then resume processing the same S/MIME-signed email, causing the filtering process to crash and restart again. A successful exploit could allow the attacker to cause a permanent DoS condition. This vulnerability may require manual intervention to recover the ESA.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-15453

Sources (Detail)

BID http://www.securityfocus.com/bid/106511
CISCO https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-s...

Alert History

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2019-01-11 17:19:03
  • Multiple Updates
2019-01-10 21:18:56
  • First insertion