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CVE-2020-3226

HIGHCVSS 8.6/10EPSS 1.55%

Last modified

CVE-2020-3226 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. A vulnerability in the Session Initiation Protocol (SIP) library of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient sanity checks on received SIP messages. EPSS estimates a 1.55% chance of exploitation in the next 30 days.

Description

A vulnerability in the Session Initiation Protocol (SIP) library of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient sanity checks on received SIP messages. An attacker could exploit this vulnerability by sending crafted SIP messages to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service condition.

Metrics

CVSS 3.1
8.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS Probability
1.55%

72.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos15.0\(2\)sg11a
CiscoIos15.3\(3\)jaa1
CiscoIos15.3\(3\)jpi
CiscoIos15.3\(3\)jpj
CiscoIos15.3\(3\)m
CiscoIos15.3\(3\)m1
CiscoIos15.3\(3\)m2
CiscoIos15.3\(3\)m3
CiscoIos15.3\(3\)m4
CiscoIos15.3\(3\)m5
CiscoIos15.3\(3\)m6
CiscoIos15.3\(3\)m7
CiscoIos15.3\(3\)m8
CiscoIos15.3\(3\)m8a
CiscoIos15.3\(3\)m9
CiscoIos15.3\(3\)m10
CiscoIos15.3\(3\)xb12
CiscoIos15.4\(1\)cg
CiscoIos15.4\(1\)t
CiscoIos15.4\(1\)t1
CiscoIos15.4\(1\)t2
CiscoIos15.4\(1\)t3
CiscoIos15.4\(1\)t4
CiscoIos15.4\(2\)cg
CiscoIos15.4\(2\)t
CiscoIos15.4\(2\)t1
CiscoIos15.4\(2\)t2
CiscoIos15.4\(2\)t3
CiscoIos15.4\(2\)t4
CiscoIos15.4\(3\)m
CiscoIos15.4\(3\)m1
CiscoIos15.4\(3\)m2
CiscoIos15.4\(3\)m3
CiscoIos15.4\(3\)m4
CiscoIos15.4\(3\)m5
CiscoIos15.4\(3\)m6
CiscoIos15.4\(3\)m6a
CiscoIos15.4\(3\)m7
CiscoIos15.4\(3\)m7a
CiscoIos15.4\(3\)m8
CiscoIos15.4\(3\)m9
CiscoIos15.4\(3\)m10
CiscoIos15.5\(1\)t
CiscoIos15.5\(1\)t1
CiscoIos15.5\(1\)t2
CiscoIos15.5\(1\)t3
CiscoIos15.5\(1\)t4
CiscoIos15.5\(2\)t
CiscoIos15.5\(2\)t1
CiscoIos15.5\(2\)t2

Showing 50 of 260 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-3226?
A vulnerability in the Session Initiation Protocol (SIP) library of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient sanity checks on received SIP messages. An attacker could exploit this vulnerability by sending crafted SIP messages to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service condition.
How severe is CVE-2020-3226?
CVE-2020-3226 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 1.55% probability of exploitation in the next 30 days.
How do I fix CVE-2020-3226?
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-2020-3226?

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

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Source: NVD / NIST