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CVE-2019-1876

MEDIUMCVSS 4/10EPSS 1.77%

Last modified

CVE-2019-1876 is a medium-severity vulnerability rated 4/10 on the CVSS scale. A vulnerability in the HTTPS proxy feature of Cisco Wide Area Application Services (WAAS) Software could allow an unauthenticated, remote attacker to use the Central Manager as an HTTPS proxy. The vulnerability is due to insufficient authentication of proxy connection requests. EPSS estimates a 1.77% chance of exploitation in the next 30 days.

Description

A vulnerability in the HTTPS proxy feature of Cisco Wide Area Application Services (WAAS) Software could allow an unauthenticated, remote attacker to use the Central Manager as an HTTPS proxy. The vulnerability is due to insufficient authentication of proxy connection requests. An attacker could exploit this vulnerability by sending a malicious HTTPS CONNECT message to the Central Manager. A successful exploit could allow the attacker to access public internet resources that would normally be blocked by corporate policies.

Metrics

CVSS 3.0
4/10

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

EPSS Probability
1.77%

75.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoWide Area Application Services5.5\(7\)
CiscoWide Area Application Services6.1\(1\)
CiscoWide Area Application Services6.4\(3b\)

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-1876?
A vulnerability in the HTTPS proxy feature of Cisco Wide Area Application Services (WAAS) Software could allow an unauthenticated, remote attacker to use the Central Manager as an HTTPS proxy. The vulnerability is due to insufficient authentication of proxy connection requests. An attacker could exploit this vulnerability by sending a malicious HTTPS CONNECT message to the Central Manager. A successful exploit could allow the attacker to access public internet resources that would normally be blocked by corporate policies.
How severe is CVE-2019-1876?
CVE-2019-1876 has a CVSS score of 4/10 (MEDIUM severity). The EPSS model estimates a 1.77% probability of exploitation in the next 30 days.
How do I fix CVE-2019-1876?
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.

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Source: NVD / NIST