CVE-2018-8828

Kamailio vulnerability

CVSS

9.8

EPSS

31.3%

EPSS pct

98th

Exploited

No known

A Buffer Overflow issue was discovered in Kamailio before 4.4.7, 5.0.x before 5.0.6, and 5.1.x before 5.1.2. A specially crafted REGISTER message with a malformed branch or From tag triggers an off-by-one heap-based buffer overflow in the tmx_check_pretran function in modules/tmx/tmx_pretran.c.

Affected vendor

Kamailio

Affected product

Kamailio

CVSS vector

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

Weakness type (CWE)

CWE-193 — Off-by-one Error
CWE-787 — Out-of-bounds Write

Published

2018-03-20

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 31.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2018-8828

Confirm whether Kamailio Kamailio is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2018-8828.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-8828

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