CVE-2019-1761 - CVE House
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Status published Medium CVE-2019-1761

Cisco IOS and IOS XE Software Hot Standby Router Protocol Information Leak Vulnerability

Vulnerability Description

A vulnerability in the Hot Standby Router Protocol (HSRP) subsystem of Cisco IOS and IOS XE Software could allow an unauthenticated, adjacent attacker to receive potentially sensitive information from an affected device. The vulnerability is due to insufficient memory initialization. An attacker could exploit this vulnerability by receiving HSRPv2 traffic from an adjacent HSRP member. A successful exploit could allow the attacker to receive potentially sensitive information from the adjacent device.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Affected Software

Cisco IOS and IOS XE Software
Vulnerable Versions:
3.2.0SG, 3.2.1SG, 3.2.2SG, 3.2.3SG, 3.2.4SG, 3.2.5SG, 3.2.6SG, 3.2.7SG, 3.2.8SG, 3.2.9SG, 3.2.10SG, 3.2.11SG, 3.7.0S, 3.7.1S, 3.7.2S, 3.7.3S, 3.7.4S, 3.7.5S, 3.7.6S, 3.7.7S, 3.7.8S, 3.7.4aS, 3.7.2tS, 3.7.0bS, 3.7.1aS, 3.3.0SG, 3.3.2SG, 3.3.1SG, 3.8.0S, 3.8.1S, 3.8.2S, 3.9.1S, 3.9.0S, 3.9.2S, 3.9.1aS, 3.9.0aS, 3.2.0SE, 3.2.1SE, 3.2.2SE, 3.2.3SE, 3.3.0SE, 3.3.1SE, 3.3.2SE, 3.3.3SE, 3.3.4SE, 3.3.5SE, 3.3.0XO, 3.3.1XO, 3.3.2XO, 3.4.0SG, 3.4.2SG, 3.4.1SG, 3.4.3SG, 3.4.4SG, 3.4.5SG, 3.4.6SG, 3.4.7SG, 3.4.8SG, 3.5.0E, 3.5.1E, 3.5.2E, 3.5.3E, 3.10.0S, 3.10.1S, 3.10.2S, 3.10.3S, 3.10.4S, 3.10.5S, 3.10.6S, 3.10.2aS, 3.10.2tS, 3.10.7S, 3.10.8S, 3.10.8aS, 3.10.9S, 3.10.10S, 3.11.1S, 3.11.2S, 3.11.0S, 3.11.3S, 3.11.4S, 3.12.0S, 3.12.1S, 3.12.2S, 3.12.3S, 3.12.0aS, 3.12.4S, 3.13.0S, 3.13.1S, 3.13.2S, 3.13.3S, 3.13.4S, 3.13.5S, 3.13.2aS, 3.13.0aS, 3.13.5aS, 3.13.6S, 3.13.7S, 3.13.6aS, 3.13.6bS, 3.13.7aS, 3.13.8S, 3.13.9S, 3.13.10S, 3.6.0E, 3.6.1E, 3.6.0aE, 3.6.0bE, 3.6.2aE, 3.6.2E, 3.6.3E, 3.6.4E, 3.6.5E, 3.6.6E, 3.6.5aE, 3.6.5bE, 3.6.7E, 3.6.8E, 3.6.7aE, 3.6.7bE, 3.6.9E, 3.6.9aE, 3.14.0S, 3.14.1S, 3.14.2S, 3.14.3S, 3.14.4S, 3.15.0S, 3.15.1S, 3.15.2S, 3.15.1cS, 3.15.3S, 3.15.4S, 3.3.0SQ, 3.3.1SQ, 3.4.0SQ, 3.4.1SQ, 3.7.0E, 3.7.1E, 3.7.2E, 3.7.3E, 3.7.4E, 3.7.5E, 3.5.0SQ, 3.5.1SQ, 3.5.2SQ, 3.5.3SQ, 3.5.4SQ, 3.5.5SQ, 3.5.6SQ, 3.5.7SQ, 3.5.8SQ, 3.16.0S, 3.16.1S, 3.16.0aS, 3.16.1aS, 3.16.2S, 3.16.2aS, 3.16.0bS, 3.16.0cS, 3.16.3S, 3.16.2bS, 3.16.3aS, 3.16.4S, 3.16.4aS, 3.16.4bS, 3.16.4gS, 3.16.5S, 3.16.4cS, 3.16.4dS, 3.16.4eS, 3.16.6S, 3.16.5aS, 3.16.5bS, 3.16.7S, 3.16.6bS, 3.16.7aS, 3.16.7bS, 3.16.8S, 3.17.0S, 3.17.1S, 3.17.2S, 3.17.1aS, 3.17.3S, 3.17.4S, 16.1.1, 16.1.2, 16.1.3, 3.2.0JA, 16.2.1, 16.2.2, 3.8.0E, 3.8.1E, 3.8.2E, 3.8.3E, 3.8.4E, 3.8.5E, 3.8.5aE, 3.8.6E, 3.8.7E, 16.3.1, 16.3.2, 16.3.3, 16.3.1a, 16.3.4, 16.3.5, 16.3.5b, 16.3.6, 16.3.7, 16.4.1, 16.4.2, 16.4.3, 16.5.1, 16.5.1a, 16.5.1b, 16.5.2, 16.5.3, 3.18.0aS, 3.18.0S, 3.18.1S, 3.18.2S, 3.18.3S, 3.18.4S, 3.18.0SP, 3.18.1SP, 3.18.1aSP, 3.18.1gSP, 3.18.1bSP, 3.18.1cSP, 3.18.2SP, 3.18.1hSP, 3.18.2aSP, 3.18.1iSP, 3.18.3SP, 3.18.4SP, 3.18.3aSP, 3.18.3bSP, 3.18.5SP, 3.9.0E, 3.9.1E, 3.9.2E, 3.9.2bE, 16.6.1, 16.6.2, 16.6.3, 16.6.4, 16.6.4s, 16.6.4a, 16.7.1, 16.7.1a, 16.7.1b, 16.7.2, 16.8.1, 16.8.1a, 16.8.1b, 16.8.1s, 16.8.1c, 16.8.1d, 16.8.2, 16.8.1e, 16.9.1, 16.9.1a, 16.9.1b, 16.9.1s, 16.9.1c, 16.9.1d, 3.10.0E, 3.10.1E, 3.10.0cE, 3.10.2E, 3.10.1aE, 3.10.1sE

Timeline

Official Publish: March 28th, 2019
Last Modified: November 21st, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weaknesses (CWE)

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.