CVE-2018-8828
A Buffer Overflow issue was discovered in Kamailio before 4.4.7, 5.0.x before 5.0.6, and 5.1.x...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2018-8828- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-193, CWE-787
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2018-8828- Updated
- 2026-11-02
EUVDEUVD-2018-20436 No score
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.
- Record
EUVD-2018-20436- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9r28-8w7c-98wj
A Buffer Overflow issue was discovered in Kamailio before 4.4.7, 5.0.x before 5.0.6, and 5.1.x...
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.
- Record
GHSA-9r28-8w7c-98wj- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
OSVALPINE-CVE-2018-8828
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.
- Record
ALPINE-CVE-2018-8828- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSV
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.
- Record
CVE-2018-8828- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2018-8828
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.
- Record
DEBIAN-CVE-2018-8828- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-8828
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.
- Record
UBUNTU-CVE-2018-8828- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUSN-4240-1 No score
kamailio vulnerability
It was discovered that Kamailio incorrectly handled a specially crafted file. An attacker could possibly use this issue to cause a denial of service or other unspecified impact.
- Record
USN-4240-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
kamailioAlpine:v3.4 |
5.0.0 up to 4.4.0-r2 | 4.4.0-r2 |
kamailioAlpine:v3.5 |
5.0.0 up to 4.4.5-r1 | 4.4.5-r1 |
kamailioAlpine:v3.6 |
5.0.0 up to 5.0.2-r2 | 5.0.2-r2 |
kamailioDebian:12 |
before 5.1.2-1 | 5.1.2-1 |
kamailioDebian:13 |
before 5.1.2-1 | 5.1.2-1 |
kamailioDebian:14 |
before 5.1.2-1 | 5.1.2-1 |
kamailioDebian:8 |
before 4.2.0-2+deb8u3, plus listed versions 4.2.0-24.2.0-2+deb8u14.2.0-2+deb8u2 |
4.2.0-2+deb8u3 |
kamailioDebian:9 |
before 4.4.4-2+deb9u1, plus listed versions 4.4.4-2 |
4.4.4-2+deb9u1 |
kamailioUbuntu:16.04:LTS |
before 4.3.4-1.1ubuntu2.1, plus listed versions 4.3.1-2ubuntu14.3.4-1.1ubuntu14.3.4-1.1ubuntu2 |
4.3.4-1.1ubuntu2.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-8828 is a critical vulnerability (CVSS 9.8) in Kamailio, published March 20, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 30.4%, the 98th percentile. Fixed in kamailio 4.4.0-r2.