CVE-2018-15453

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Summary

CVECVE-2018-15453
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-01-10 18:29:00 UTC
Updated2020-09-16 14:13:00 UTC
DescriptionA 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.

Risk And Classification

Problem Types: CWE-787

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Cisco Email Security Appliance Firmware 11.0.1-401 All All All
Operating System Cisco Email Security Appliance Firmware 11.1.0-131 All All All
Operating System Cisco Email Security Appliance Firmware 11.0.1-401 All All All
Operating System Cisco Email Security Appliance Firmware 11.1.0-131 All All All

References

ReferenceSourceLinkTags
Cisco Email Security Appliance Memory Corruption Denial of Service Vulnerability CISCO tools.cisco.com Vendor Advisory
Malformed Request BID www.securityfocus.com Third Party Advisory, VDB Entry
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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