8.6

CVE-2017-3790

A vulnerability in the received packet parser of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) software could allow an unauthenticated, remote attacker to cause a reload of the affected system, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient size validation of user-supplied data. An attacker could exploit this vulnerability by sending crafted H.224 data in Real-Time Transport Protocol (RTP) packets in an H.323 call. An exploit could allow the attacker to overflow a buffer in a cache that belongs to the received packet parser, which will result in a crash of the application, resulting in a DoS condition. All versions of Cisco Expressway Series Software and Cisco TelePresence VCS Software prior to version X8.8.2 are vulnerable. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Cisco Bug IDs: CSCus99263.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cisco ≫ Expressway Version x8.1.0
Cisco ≫ Expressway Version x8.1.1
Cisco ≫ Expressway Version x8.1.2
Cisco ≫ Expressway Version x8.1_base
Cisco ≫ Expressway Version x8.2.1
Cisco ≫ Expressway Version x8.2.2
Cisco ≫ Expressway Version x8.2_base
Cisco ≫ Expressway Version x8.5 Update rc4
Cisco ≫ Expressway Version x8.5.0
Cisco ≫ Expressway Version x8.5.1
Cisco ≫ Expressway Version x8.5.2
Cisco ≫ Expressway Version x8.5.3
Cisco ≫ Expressway Version x8.5_base
Cisco ≫ Expressway Version x8.6.0
Cisco ≫ Expressway Version x8.6.1
Cisco ≫ Expressway Version x8.7.0
Cisco ≫ Expressway Version x8.7.1
Cisco ≫ Expressway Version x8.7.2
Cisco ≫ Expressway Version x8.7.3
Cisco ≫ Expressway Version x8.8.0
Cisco ≫ Expressway Version x8.8.1
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 3.49% 0.876
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 8.6 3.9 4
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
NIST 7.8 10 6.9
AV:N/AC:L/Au:N/C:N/I:N/A:C
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

http://www.securityfocus.com/bid/95786
Third Party Advisory
VDB Entry
http://www.securitytracker.com/id/1037697
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170125-expressway
Vendor Advisory