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CVE-2016-2385

Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in...

9.8 CriticalPublic exploitFix available

CVE-2016-2385 is a critical vulnerability (CVSS 9.8) in Kamailio, published March 29, 2016. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 29.2%, the 98th percentile. Fixed in kamailio 4.3.4-2.

Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in Kamailio (formerly OpenSER and SER) before 4.3.5 allows remote attackers to cause a denial of service (memory corruption and process crash) or possibly execute arbitrary code via a large SIP packet.

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

29.2%Up 9.4 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 9.8

Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in Kamailio (formerly OpenSER and SER) before 4.3.5 allows remote attackers to cause a denial of service (memory corruption and process crash) or possibly execute arbitrary code via a large SIP packet.

Record
CVE-2016-2385
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness
CWE-119
Updated
2026-11-02
CVE List No score

Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in Kamailio (formerly OpenSER and SER) before 4.3.5 allows remote attackers to cause a denial of service (memory corruption and process crash) or possibly execute arbitrary code via a large SIP packet.

Record
CVE-2016-2385
Updated
2026-11-02
EUVDEUVD-2016-3469 No score

Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in Kamailio (formerly OpenSER and SER) before 4.3.5 allows remote attackers to cause a denial of service (memory corruption and process crash) or possibly execute arbitrary code via a large SIP packet.

Record
EUVD-2016-3469
Updated
2026-11-03
GitHub AdvisoriesGHSA-wcxv-ff2g-c9qw 9.8

Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in...

Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in Kamailio (formerly OpenSER and SER) before 4.3.5 allows remote attackers to cause a denial of service (memory corruption and process crash) or possibly execute arbitrary code via a large SIP packet.

Record
GHSA-wcxv-ff2g-c9qw
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-119
Updated
2026-11-02
OSV 9.8

Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in Kamailio (formerly OpenSER and SER) before 4.3.5 allows remote attackers to cause a denial of service (memory corruption and process crash) or possibly execute arbitrary code via a large SIP packet.

Record
CVE-2016-2385
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2016-2385 9.8

Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in Kamailio (formerly OpenSER and SER) before 4.3.5 allows remote attackers to cause a denial of service (memory corruption and process crash) or possibly execute arbitrary code via a large SIP packet.

Record
DEBIAN-CVE-2016-2385
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2016-2385 9.8

Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in Kamailio (formerly OpenSER and SER) before 4.3.5 allows remote attackers to cause a denial of service (memory corruption and process crash) or possibly execute arbitrary code via a large SIP packet.

Record
UBUNTU-CVE-2016-2385
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUSN-7416-1 No score

kamailio vulnerabilities

Stelios Tsampas discovered that Kamailio did not correctly handle certain memory operations, which could lead to a buffer overflow. A remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-2385)

Henning Westerholt discovered that Kamailio did not correctly handle duplicated headers, which could lead to a segmentation fault. A remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-14767)

It was discovered that Kamailio did not correctly handle parsing certain headers containing whitespace characters. An authenticated attacker could possibly use this issue to gain access to unauthorized resources and expose sensitive information. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-28361)

Record
USN-7416-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
kamailio
Debian:12
before 4.3.4-2
4.3.4-2
kamailio
Debian:13
before 4.3.4-2
4.3.4-2
kamailio
Debian:14
before 4.3.4-2
4.3.4-2
kamailio
Debian:8
before 4.2.0-2+deb8u1, plus listed versions
4.2.0-2
4.2.0-2+deb8u1
kamailio
Ubuntu:Pro:16.04:LTS
before 4.3.4-1.1ubuntu2.1+esm2, plus listed versions
4.3.1-2ubuntu14.3.4-1.1ubuntu14.3.4-1.1ubuntu24.3.4-1.1ubuntu2.14.3.4-1.1ubuntu2.1+esm1
4.3.4-1.1ubuntu2.1+esm2
kamailio
Ubuntu:Pro:18.04:LTS
before 5.1.2-1ubuntu2+esm2, plus listed versions
4.4.2-3ubuntu55.0.4-1ubuntu15.1.1-1ubuntu15.1.1-1ubuntu45.1.2-1ubuntu15.1.2-1ubuntu25.1.2-1ubuntu2+esm1
5.1.2-1ubuntu2+esm2
kamailio
Ubuntu:Pro:20.04:LTS
before 5.3.2-1ubuntu0.1~esm2, plus listed versions
5.2.3-1build35.2.3-1build45.3.0-25.3.1-15.3.2-1build15.3.2-1build25.3.2-1build35.3.2-1ubuntu0.1~esm1
5.3.2-1ubuntu0.1~esm2

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBKamailio 4.3.4 - Heap Buffer Overflow2016-03-30

History

History
WhenChangedSources
2026-11-03aliasesEUVD
2026-11-02createdCVE List, Exploit-DB, GitHub Advisories, NVD, OSV

References

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