High severity · published Jul 6, 2019
CVE-2019-1892
A vulnerability in the Secure Sockets Layer (SSL) input packet processor of Cisco Small Business 200, 300, and 500 Series Managed Switches could allow an unauthenticated, remote…
7.5
CVSS
1.8%
EPSS
No
On KEV
Description
A vulnerability in the Secure Sockets Layer (SSL) input packet processor of Cisco Small Business 200, 300, and 500 Series Managed Switches could allow an unauthenticated, remote attacker to cause a memory corruption on an affected device. The vulnerability is due to improper validation of HTTPS packets. An attacker could exploit this vulnerability by sending a malformed HTTPS packet to the management web interface of the affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a denial of service (DoS) condition.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EF
Esw2-350g52dc Firmware · Cisco
before 1.4.10.6 · source: NVD
EF
Esw2-550x48dc Firmware · Cisco
before 1.4.10.6 · source: NVD
SF
Sf200-24 Firmware · Cisco
before 1.4.10.6 · source: NVD
SF
Sf200-24p Firmware · Cisco
before 1.4.10.6 · source: NVD
SF
Sf200-48 Firmware · Cisco
before 1.4.10.6 · source: NVD
SF
Sf200-48p Firmware · Cisco
before 1.4.10.6 · source: NVD
SF
Sf300-08 Firmware · Cisco
before 1.4.10.6 · source: NVD
SF
Sf300-24 Firmware · Cisco
before 1.4.10.6 · source: NVD
SF
Sf300-24mp Firmware · Cisco
before 1.4.10.6 · source: NVD
SF
Sf300-24p Firmware · Cisco
before 1.4.10.6 · source: NVD
SF
Sf300-24pp Firmware · Cisco
before 1.4.10.6 · source: NVD
SF
Sf300-48 Firmware · Cisco
before 1.4.10.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-1892
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-1892
Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-sbss-memcorrupt
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7.7
CVE-2019-1806
A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco Small Business Sx200, Sx300, Sx500, ESW2 Series Managed Switches and Small…
7.5
CVE-2019-1891
A vulnerability in the web interface of Cisco Small Business 200, 300, and 500 Series Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service…
