VULNERABILITY INTELLIGENCE

CVE-2003-0795

CVSS score5 MEDIUM
EPSS probability8.43%
CISA KEVNot currently listed
Published2003-12-15
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:N/I:N/A:P

Description

The vty layer in Quagga before 0.96.4, and Zebra 0.93b and earlier, does not verify that sub-negotiation is taking place when processing the SE marker, which allows remote attackers to cause a denial of service (crash) via a malformed telnet command to the telnet CLI port, which may trigger a null dereference.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references