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ReviewHigh

CVE-2019-12678

Cisco Cisco Adaptive Security Appliance (ASA) Software, adaptive security appliance, adaptive security appliance software

A vulnerability in the Session Initiation Protocol (SIP) inspection module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper parsing of SIP messages. An attacker could exploit this vulnerability by sending a malicious SIP packet through an affected device. A successful exploit could allow the attacker to trigger an integer underflow, causing the software to try to read unmapped memory and...

CVSS
7.5
EPSS
1.82%
77.3% percentile
CISA KEV
Not listed
Published
2019.10.03
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability1.82%
Technical severityCVSS 7.5

Vulnerability overview

A vulnerability in the Session Initiation Protocol (SIP) inspection module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper parsing of SIP messages. An attacker could exploit this vulnerability by sending a malicious SIP packet through an affected device. A successful exploit could allow the attacker to trigger an integer underflow, causing the software to try to read unmapped memory and...

Affected product and versions

Product
Cisco Cisco Adaptive Security Appliance (ASA) Software, adaptive security appliance, adaptive security appliance software
Affected versions
>= unspecified, < 9.4.4.37, >= 9.5 < 9.6.4.34, >= 9.7 < 9.8.4.7, >= 9.9 < 9.9.2.56, >= 9.10 < 9.10.1.27, >= 9.12 < 9.12.2.1, < 6.2.3.15, >= 6.3.0 < 6.3.0.4, >= 6.4.0 < 6.4.0.4
Fixed versions
9.4.4.37, 9.6.4.34, 9.8.4.7, 9.9.2.56, 9.10.1.27, 9.12.2.1, 6.2.3.15, 6.3.0.4, 6.4.0.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Cisco Cisco Adaptive Security Appliance (ASA) Software, adaptive security appliance, adaptive security appliance software and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-191