CVE intelligence and bounded remediation

CVE-2019-1837 — Cisco Unified Communications Manager security vulnerability

High CVSS 7.8

A vulnerability in the User Data Services (UDS) API of Cisco Unified Communications Manager (Unified CM) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the management GUI. The vulnerability is due to improper validation of input parameters in the UDS API requests. An attacker could exploit this vulnerability by sending a crafted request to the UDS API of an affected device. A successful exploit could allow the attacker to make the A Cisco DB service quit unexpectedly, preventing admin access to the Unified CM management GUI. Manual intervention may be required to restore normal operation. Software versions 10.5, 11.5, 12.0, 12.5 are affected.

Severity
High
CVSS
7.8 (2.0)
Published
2019-04-18
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-129, CWE-20

Affected products

  • cisco / unified_communications_manager / 10.5(2.10000.5)
  • cisco / unified_communications_manager / 11.5(1.10000.6)
  • cisco / unified_communications_manager / 12.0(1.10000.10)
  • cisco / unified_communications_manager / 12.5(1.10000.22)

Matched remediation archetype

Buffer bounds, memory safety, and memory corruption

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Check exposure

  • Identify affected native-code versions, build flags, architectures, parsers, codecs, drivers, and input paths in all shipped artifacts.
  • Determine whether untrusted data reaches the affected routine and the process privilege, sandbox, and network exposure.
  • Confirm statically linked, vendored, firmware, and platform-provided copies, not only package-manager records.

Remediate safely

  • Apply the maintained upstream correction or replace the affected component, then rebuild every dependent artifact from clean inputs.
  • Adopt bounds-checked interfaces, validated sizes and integer conversions, clear ownership, and memory-safe components where practical.
  • Enable supported compiler and runtime hardening and add sanitized tests and fuzz regression seeds derived from non-weaponized fixtures.

Authoritative sources

Complete CVE record and remediation plan

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