CVE-2016-7044
HighSummary
The unformat_24bit_color function in the format parsing code in Irssi before version 0.8.20, when compiled with true-color support enabled, allows remote attackers to cause a denial of service (heap corruption and crash) via an incomplete 24bit color code.
Risk Assessment
An attacker can exploit this vulnerability to disrupt service operation, potentially leading to communication downtime and loss of system availability.
Recommendation
It is recommended to update Irssi to version 0.8.20 or later to mitigate this vulnerability.
Other vulnerabilities in Irssi
See all- CVE-2017-15723High
In Irssi before version 1.0.5, overlong nicks or targets may result in a NULL pointer dereference while splitting the message.
- CVE-2017-15721High
In Irssi before version 1.0.5, certain incorrectly formatted DCC CTCP messages could lead to a NULL pointer dereference.
- CVE-2017-15228High
Irssi before 1.0.5, when installing themes with unterminated colour formatting sequences, may access data beyond the end of the string.
- CVE-2017-15227High
Irssi before 1.0.5 may incorrectly fail to remove destroyed channels from the query list while waiting for channel synchronization, leading to use-after-free conditions when updating the state later on.
- CVE-2017-9469High
In Irssi before version 1.0.3, when receiving certain incorrectly quoted DCC files, it tries to find the terminating quote one byte before the allocated memory. This may lead to application crashes.
- CVE-2017-9468High
In Irssi before version 1.0.3, when receiving a DCC message without source nick/host, it attempts to dereference a NULL pointer. This can lead to application crashes.
- CVE-2017-5356High
Irssi before 0.8.21 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via a string containing a formatting sequence (%[) without a closing bracket (]).
- CVE-2017-5196High
Irssi versions 0.8.18 and earlier before 0.8.21 allow remote attackers to cause a denial of service (out-of-bounds read and crash) via vectors involving strings that are not UTF8.
- CVE-2017-5195High
Irssi versions 0.8.17 and earlier before 0.8.21 are vulnerable to an attack that can lead to denial of service through a crafted ANSI x8 color code causing an out-of-bounds read and application crash.
- CVE-2017-5194High
A use-after-free vulnerability in Irssi before version 0.8.21 allows remote attackers to cause a denial of service (crash) via an invalid nick message.
Original NVD description (English source)
The unformat_24bit_color function in the format parsing code in Irssi before 0.8.20, when compiled with true-color enabled, allows remote attackers to cause a denial of service (heap corruption and crash) via an incomplete 24bit color code.