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CVE-2017-3790

UnknownEPSS 3.49%

Last modified

CVE-2017-3790 is a vulnerability of currently unknown severity. 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. EPSS estimates a 3.49% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
3.49%

87.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
CiscoExpresswayx8.1.0—
CiscoExpresswayx8.1.1—
CiscoExpresswayx8.1.2—
CiscoExpresswayx8.1_base—
CiscoExpresswayx8.2.1—
CiscoExpresswayx8.2.2—
CiscoExpresswayx8.2_base—
CiscoExpresswayx8.5Rc4
CiscoExpresswayx8.5.0—
CiscoExpresswayx8.5.1—
CiscoExpresswayx8.5.2—
CiscoExpresswayx8.5.3—
CiscoExpresswayx8.5_base—
CiscoExpresswayx8.6.0—
CiscoExpresswayx8.6.1—
CiscoExpresswayx8.7.0—
CiscoExpresswayx8.7.1—
CiscoExpresswayx8.7.2—
CiscoExpresswayx8.7.3—
CiscoExpresswayx8.8.0—
CiscoExpresswayx8.8.1—
CiscoTelepresence Video Communication Serverx5.2_base—
CiscoTelepresence Video Communication Serverx6.0_base—
CiscoTelepresence Video Communication Serverx6.1_base—
CiscoTelepresence Video Communication Serverx7.0.0—
CiscoTelepresence Video Communication Serverx7.0.1—
CiscoTelepresence Video Communication Serverx7.0.2—
CiscoTelepresence Video Communication Serverx7.0.3—
CiscoTelepresence Video Communication Serverx7.1_base—
CiscoTelepresence Video Communication Serverx7.2.0—
CiscoTelepresence Video Communication Serverx7.2.1—
CiscoTelepresence Video Communication Serverx7.2.2—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2017-3790?
Severity scoring for CVE-2017-3790 is pending analysis. The EPSS model estimates a 3.49% probability of exploitation in the next 30 days.
How do I fix CVE-2017-3790?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-3790?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST