Wireshark up to 2.4.4 wiretap/netmon.c netmonrec_comment_destroy memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Wireshark up to 2.4.4. It has been declared as critical. This affects the function netmonrec_comment_destroy of the file wiretap/netmon.c. Such manipulation leads to memory corruption. This vulnerability is referenced as CVE-2018-6836. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Wireshark up to 2.4.4 (Packet Analyzer Software) and classified as critical. Affected by this issue is the function netmonrec_comment_destroy of the file wiretap/netmon.c. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The netmonrec_comment_destroy function in wiretap/netmon.c in Wireshark through 2.4.4 performs a free operation on an uninitialized memory address, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact.

The bug was discovered 02/07/2018. The weakness was published 02/08/2018 (Website). The advisory is shared for download at bugs.wireshark.org. This vulnerability is handled as CVE-2018-6836 since 02/07/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. 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 vulnerability scanner Nessus provides a plugin with the ID 108674 (Fedora 27 : 1:wireshark (2018-cdf3f8e8b0)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 296023 (Solaris 11.3 Support Repository Update (SRU) 30.4.0 Missing).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (108674). Similar entries are available at VDB-102549 and VDB-129805. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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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Nessus ID: 108674
Nessus Name: Fedora 27 : 1:wireshark (2018-cdf3f8e8b0)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 57702
OpenVAS Name: Wireshark Denial of Service Vulnerability (MacOSX)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: 28960d79cca262ac6b974f339697b299a1e28fef

Timelineinfo

02/07/2018 🔍
02/07/2018 +0 days 🔍
02/08/2018 +1 days 🔍
02/08/2018 +0 days 🔍
02/08/2018 +0 days 🔍
03/27/2018 +47 days 🔍
03/28/2018 +1 days 🔍
02/06/2023 +1776 days 🔍

Sourcesinfo

Product: wireshark.org

Advisory: FEDORA-2018-cdf3f8e8b0
Status: Not defined

CVE: CVE-2018-6836 (🔍)
GCVE (CVE): GCVE-0-2018-6836
GCVE (VulDB): GCVE-100-113000
See also: 🔍

Entryinfo

Created: 02/08/2018 18:24
Updated: 02/06/2023 08:41
Changes: 02/08/2018 18:24 (74), 01/03/2020 06:32 (3), 02/06/2023 08:36 (5), 02/06/2023 08:41 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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