Wireshark up to 2.6.6 TCAP Dissector tcap.cnf null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Wireshark. It has been declared as problematic. Affected is an unknown function of the file epan/dissectors/asn1/tcap/tcap.cnf of the component TCAP Dissector. Executing a manipulation can lead to null pointer dereference. The identification of this vulnerability is CVE-2019-9208. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Wireshark (Packet Analyzer Software). This vulnerability affects some unknown processing of the file epan/dissectors/asn1/tcap/tcap.cnf of the component TCAP Dissector. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

In Wireshark 2.4.0 to 2.4.12 and 2.6.0 to 2.6.6, the TCAP dissector could crash. This was addressed in epan/dissectors/asn1/tcap/tcap.cnf by avoiding NULL pointer dereferences.

The bug was discovered 02/27/2019. The weakness was shared 02/28/2019 by Mateusz Jurczyk (OSS-Fuzz) (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2019-9208 since 02/26/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371670 (Wireshark Multiple Vulnerabilities (wnpa-sec-2019-06 to wnpa-sec-2019-08)).

Upgrading eliminates this vulnerability. Applying the patch 3d1b8004ed3a07422ca5d4e4ee8097150b934fd2 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 107203†). The entries VDB-131285, VDB-131286 and VDB-133145 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: 3d1b8004ed3a07422ca5d4e4ee8097150b934fd2

Timelineinfo

02/26/2019 🔍
02/27/2019 +1 days 🔍
02/27/2019 +0 days 🔍
02/28/2019 +1 days 🔍
03/01/2019 +1 days 🔍
07/26/2023 +1608 days 🔍

Sourcesinfo

Product: wireshark.org

Advisory: USN-3986-1⛔
Researcher: Mateusz Jurczyk (OSS-Fuzz)
Status: Confirmed

CVE: CVE-2019-9208 (🔍)
GCVE (CVE): GCVE-0-2019-9208
GCVE (VulDB): GCVE-100-131284
SecurityFocus: 107203 - Wireshark Multiple Denial of Service Vulnerabilities

See also: 🔍

Entryinfo

Created: 03/01/2019 08:37
Updated: 07/26/2023 09:38
Changes: 03/01/2019 08:37 (60), 05/13/2020 13:04 (7), 07/26/2023 09:38 (6)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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