Cisco Email Security Appliance Zip Decompression Engine Denial of Service Vulnerability (Cisco Cisco Email Security Appliance (ESA))
At a glance
- Source
- NVD
- EPSS
- EPSS 1.09 % · percentile 65 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
Description
A vulnerability in the zip decompression engine of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of zip files. An attacker could exploit this vulnerability by sending an email message with a crafted zip-compressed attachment. A successful exploit could trigger a restart of the content-scanning process, causing a temporary DoS condition. This vulnerability affects Cisco AsyncOS Software for Cisco ESA releases earlier than 13.0.
Weaknesses (CWE)
- CWE-20 — Improper Input Validation
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L | cisco |
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | MEDIUM 6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L | NVD · psirt@cisco.com (Secondary) |
| CVSS 2.0 | MEDIUM 6.4 | AV:N/AC:L/Au:N/C:N/I:P/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2020-24405
- GCVE · GCVE-0-2020-3134
Affected configurations (NVD CPE)
cpe:2.3:a:cisco:email_security_appliance:*:*:*:*:*:*:*:*< 13.0
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco Email Security Appliance (ESA) | affected earlier than 13.0 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |