CVE-2021-1534
published 2021-10-06CVE-2021-1534: A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote…
PriorityP431medium5.3CVSS 3.1
AVNACLPRNUINSUCNILAN
EPSS
1.03%
59.9th percentile
A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device. This vulnerability is due to improper processing of URLs. An attacker could exploit this vulnerability by crafting a URL in a particular way. A successful exploit could allow the attacker to bypass the URL reputation filters that are configured for an affected device, which could allow malicious URLs to pass through the device.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | asyncos | < 14.0.1 | 14.0.1 |
| cisco | cisco_email_security_appliance | — | — |
| cisco | email_security_appliance_url_filtering | — | — |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
vendor_cisco5.8MEDIUM
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Cisco
Cisco Email Security Appliance URL Filtering Bypass Vulnerability
vendor_cisco·2021-10-06·CVSS 5.8
CVE-2021-1534 [MEDIUM] CWE-20 Cisco Email Security Appliance URL Filtering Bypass Vulnerability
Cisco Email Security Appliance URL Filtering Bypass Vulnerability
A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device.
This vulnerability is due to improper processing of URLs. An attacker could exploit this vulnerability by crafting a URL in a particular way. A successful exploit could allow the attacker to bypass the URL reputation filters that are configured for an affected device, which could allow malicious URLs to pass through the device.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is available at the following li
Cisco
Cisco Email Security Appliance URL Filtering Bypass Vulnerability
vendor_cisco·CVSS 3.1
CVE-2021-1534 Cisco Email Security Appliance URL Filtering Bypass Vulnerability
CVE-2021-1534: Cisco Email Security Appliance URL Filtering Bypass Vulnerability
A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device. This vulnerability is due to improper processing of URLs. An attacker could exploit this vulnerability by crafting a URL in a particular way. A successful exploit could allow the attacker to bypass the URL reputation filters that are configured for an affected device, which could allow malicious URLs to pass through the device. Cisco has released software updates that address this vulnerability. There are no
CVSS: 3.1
CWE: CWE-20, CWE-20
Bug IDs: CSCvx60178
GHSA
GHSA-86vv-w52w-qq85: A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticate
ghsa_unreviewed·2022-05-24
CVE-2021-1534 [MEDIUM] GHSA-86vv-w52w-qq85: A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticate
A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device. This vulnerability is due to improper processing of URLs. An attacker could exploit this vulnerability by crafting a URL in a particular way. A successful exploit could allow the attacker to bypass the URL reputation filters that are configured for an affected device, which could allow malicious URLs to pass through the device.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-10-06
Published