mIRC up to 7.54 URI Protocol Argument command injection

Summaryinfo

A vulnerability classified as critical was found in mIRC up to 7.54. The impacted element is an unknown function of the component URI Protocol Handler. Executing a manipulation as part of Argument can lead to command injection. The identification of this vulnerability is CVE-2019-6453. The attack may be launched remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in mIRC up to 7.54 (Chat Software). It has been declared as critical. This vulnerability affects an unknown function of the component URI Protocol Handler. The manipulation as part of a Argument leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

mIRC before 7.55 allows remote command execution by using argument injection through custom URI protocol handlers. The attacker can specify an irc:// URI that loads an arbitrary .ini file from a UNC share pathname. Exploitation depends on browser-specific URI handling (Chrome is not exploitable).

The bug was discovered 02/18/2019. The weakness was shared 02/18/2019 (Website). The advisory is shared for download at exploit-db.com. This vulnerability was named CVE-2019-6453 since 01/16/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

It is possible to download the exploit at packetstormsecurity.com. It is declared as proof-of-concept. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91517 (mIRC Remote Code Execution Vulnerability).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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

Productinfo

Type

• Chat Software

Name

• mIRC

Version

• 7.0
• 7.1
• 7.2
• 7.3
• 7.4
• 7.5
• 7.6
• 7.7
• 7.8
• 7.9
• 7.10
• 7.11
• 7.12
• 7.13
• 7.14
• 7.15
• 7.16
• 7.17
• 7.18
• 7.19
• 7.20
• 7.21
• 7.22
• 7.23
• 7.24
• 7.25
• 7.26
• 7.27
• 7.28
• 7.29
• 7.30
• 7.31
• 7.32
• 7.33
• 7.34
• 7.35
• 7.36
• 7.37
• 7.38
• 7.39
• 7.40
• 7.41
• 7.42
• 7.43
• 7.44
• 7.45
• 7.46
• 7.47
• 7.48
• 7.49
• 7.50
• 7.51
• 7.52
• 7.53
• 7.54

CPE 2.3info

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CPE 2.2info

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Exploitinginfo

Threat Intelligenceinfo

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Entryinfo

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