mIRC < 6.03 Scripting $asctime Overflow

Medium Nessus Network Monitor Plugin ID 1863

Synopsis

The remote host is vulnerable to a buffer overflow.

Description

The remote host is running the mIRC chat client. A buffer overflow has been reported in the $asctime identifier, a function in the mIRC scripting language. The error lies in the handling of oversized format specifier strings. Exploitation relies on a script passing untrusted input into this function. Reportedly, no such script is included in the default installation of mIRC.

Solution

Upgrade to version 6.03 or higher.

Plugin Details

Severity: Medium

ID: 1863

Family: IRC Clients

Published: 2004/08/20

Modified: 2016/11/23

Dependencies: 1878

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 5.1

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

CVSSv3

Base Score: 5.6

Temporal Score: 5.2

Vector: CVSS3#AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: CVSS3#E:F/RL:O/RC:C

Reference Information

CVE: CVE-2002-1456

BID: 5576