When using an incomplete variable argument, Irssi before 1.0.6 may access data beyond the end of the string.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - irssi: heap buffer overflow due to calculation error in the completion code (CVE-2018-5208)

  - The buf.pl script before 2.20 in Irssi before 0.8.20 uses weak permissions for the scrollbuffer dump file     created between upgrades, which might allow local users to obtain sensitive information from private chat     conversations by reading the file. (CVE-2016-7553)

  - An issue was discovered in Irssi before 1.0.4. When receiving messages with invalid time stamps, Irssi     would try to dereference a NULL pointer. (CVE-2017-10965)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - irssi: heap buffer overflow due to calculation error in the completion code (CVE-2018-5208)

  - The buf.pl script before 2.20 in Irssi before 0.8.20 uses weak permissions for the scrollbuffer dump file     created between upgrades, which might allow local users to obtain sensitive information from private chat     conversations by reading the file. (CVE-2016-7553)

  - An issue was discovered in Irssi before 1.0.4. When receiving messages with invalid time stamps, Irssi     would try to dereference a NULL pointer. (CVE-2017-10965)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

This plugin has been deprecated as it does not adhere to established standards for this style of check.

According to the versions of the irssi package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in Irssi before 1.0.4. When     receiving messages with invalid time stamps, Irssi     would try to dereference a NULL     pointer.(CVE-2017-10965)

  - An issue was discovered in Irssi before 1.0.4. While     updating the internal nick list, Irssi could     incorrectly use the GHashTable interface and free the     nick while updating it. This would then result in     use-after-free conditions on each access of the hash     table.(CVE-2017-10966)

  - In Irssi before 1.0.3, when receiving a DCC message     without source nick/host, it attempts to dereference a     NULL pointer. Thus, remote IRC servers can cause a     crash.(CVE-2017-9468)

  - In Irssi before 1.0.3, when receiving certain     incorrectly quoted DCC files, it tries to find the     terminating quote one byte before the allocated memory.
    Thus, remote attackers might be able to cause a     crash.(CVE-2017-9469)

  - In Irssi before 1.0.6, a calculation error in the     completion code could cause a heap buffer overflow when     completing certain strings.(CVE-2018-5208)

  - 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-2017-5356)

  - The nickcmp function in Irssi before 0.8.21 allows     remote attackers to cause a denial of service (NULL     pointer dereference and crash) via a message without a     nick.(CVE-2017-5193)

  - Use-after-free vulnerability in Irssi before 0.8.21     allows remote attackers to cause a denial of service     (crash) via an invalid nick message.(CVE-2017-5194)

  - When the channel topic is set without specifying a     sender, Irssi before 1.0.6 may dereference a NULL     pointer.(CVE-2018-5206)

  - When using an incomplete variable argument, Irssi     before 1.0.6 may access data beyond the end of the     string.(CVE-2018-5207)

  - When using incomplete escape codes, Irssi before 1.0.6     may access data beyond the end of the     string.(CVE-2018-5205)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the irssi package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - In Irssi before 1.0.6, a calculation error in the     completion code could cause a heap buffer overflow when     completing certain strings.(CVE-2018-5208)

  - When using incomplete escape codes, Irssi before 1.0.6     may access data beyond the end of the     string.(CVE-2018-5205)

  - When the channel topic is set without specifying a     sender, Irssi before 1.0.6 may dereference a NULL     pointer.(CVE-2018-5206)

  - When using an incomplete variable argument, Irssi     before 1.0.6 may access data beyond the end of the     string.(CVE-2018-5207)

  - The nickcmp function in Irssi before 0.8.21 allows     remote attackers to cause a denial of service (NULL     pointer dereference and crash) via a message without a     nick.(CVE-2017-5193)

  - Use-after-free vulnerability in Irssi before 0.8.21     allows remote attackers to cause a denial of service     (crash) via an invalid nick message.(CVE-2017-5194)

  - 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-2017-5356)

  - In Irssi before 1.0.3, when receiving a DCC message     without source nick/host, it attempts to dereference a     NULL pointer. Thus, remote IRC servers can cause a     crash.(CVE-2017-9468)

  - In Irssi before 1.0.3, when receiving certain     incorrectly quoted DCC files, it tries to find the     terminating quote one byte before the allocated memory.
    Thus, remote attackers might be able to cause a     crash.(CVE-2017-9469)

  - An issue was discovered in Irssi before 1.0.4. When     receiving messages with invalid time stamps, Irssi     would try to dereference a NULL     pointer.(CVE-2017-10965)

  - An issue was discovered in Irssi before 1.0.4. While     updating the internal nick list, Irssi could     incorrectly use the GHashTable interface and free the     nick while updating it. This would then result in     use-after-free conditions on each access of the hash     table.(CVE-2017-10966)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the irssi package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - When using an incomplete variable argument, Irssi     before 1.0.6 may access data beyond the end of the     string.(CVE-2018-5207)

  - When the channel topic is set without specifying a     sender, Irssi before 1.0.6 may dereference a NULL     pointer.(CVE-2018-5206)

  - When using incomplete escape codes, Irssi before 1.0.6     may access data beyond the end of the     string.(CVE-2018-5205)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Multiple vulnerabilities have been discovered in Irssi, a terminal-based IRC client which can result in denial of service.

This is new version of irssi. It contains security fixes for CVE-2018-5205 CVE-2018-5206 CVE-2018-5207 CVE-2018-5208 .

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This is new version of irssi. It contains security fixes for CVE-2018-5205 CVE-2018-5206 CVE-2018-5207 CVE-2018-5208.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3527-1 advisory.

    Joseph Bisch discovered that Irssi incorrectly handled incomplete escape codes. If a user were tricked     into using malformed commands or opening malformed files, an attacker could use this issue to cause Irssi     to crash, resulting in a denial of service. (CVE-2018-5205)

    Joseph Bisch discovered that Irssi incorrectly handled settings the channel topic without specifying a     sender. A malicious IRC server could use this issue to cause Irssi to crash, resulting in a denial of     service. (CVE-2018-5206)

    Joseph Bisch discovered that Irssi incorrectly handled incomplete variable arguments. If a user were     tricked into using malformed commands or opening malformed files, an attacker could use this issue to     cause Irssi to crash, resulting in a denial of service. (CVE-2018-5207)

    Joseph Bisch discovered that Irssi incorrectly handled completing certain strings. An attacker could use     this issue to cause Irssi to crash, resulting in a denial of service, or possibly execute arbitrary code.
    (CVE-2018-5208)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

This update for irssi to version 1.0.6 fixes several issues that may affect the stability of irssi :

  - CVE-2018-5205: Data access beyond the end of the string     when using incomplete escape codes

  - CVE-2018-5206: NULL pointer dereference when the channel     topic is set without specifying a sender

  - CVE-2018-5207: When using an incomplete variable     argument, Irssi may access data beyond the end of the     string

  - CVE-2018-5208: Heap buffer overflow when completing     certain strings

New irssi packages are available for Slackware 14.0, 14.1, 14.2, and
-current to fix security issues.

Irssi reports :

When the channel topic is set without specifying a sender, Irssi may dereference NULL pointer. Found by Joseph Bisch.

When using incomplete escape codes, Irssi may access data beyond the end of the string. Found by Joseph Bisch.

A calculation error in the completion code could cause a heap buffer overflow when completing certain strings. Found by Joseph Bisch.

When using an incomplete variable argument, Irssi may access data beyond the end of the string. Found by Joseph Bisch.

ID	Name	Product	Family	Severity
198976	RHEL 7 : irssi (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
198925	RHEL 6 : irssi (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
196853	RHEL 6 : irssi (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	critical
196841	RHEL 7 : irssi (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	critical
132130	EulerOS 2.0 SP3 : irssi (EulerOS-SA-2019-2595)	Nessus	Huawei Local Security Checks	critical
131630	EulerOS 2.0 SP2 : irssi (EulerOS-SA-2019-2477)	Nessus	Huawei Local Security Checks	critical
130870	EulerOS 2.0 SP5 : irssi (EulerOS-SA-2019-2161)	Nessus	Huawei Local Security Checks	critical
108774	Debian DSA-4162-1 : irssi - security update	Nessus	Debian Local Security Checks	critical
106112	Fedora 27 : irssi (2018-c4e4935e01)	Nessus	Fedora Local Security Checks	critical
106111	Fedora 26 : irssi (2018-bc08435961)	Nessus	Fedora Local Security Checks	critical
105750	Ubuntu 14.04 LTS / 16.04 LTS : Irssi vulnerabilities (USN-3527-1)	Nessus	Ubuntu Local Security Checks	critical
105716	openSUSE Security Update : irssi (openSUSE-2018-18)	Nessus	SuSE Local Security Checks	critical
105656	Slackware 14.0 / 14.1 / 14.2 / current : irssi (SSA:2018-008-01)	Nessus	Slackware Local Security Checks	critical
105626	FreeBSD : irssi -- multiple vulnerabilities (a3764767-f31e-11e7-95f2-005056925db4)	Nessus	FreeBSD Local Security Checks	critical

Detections

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CVE-2018-5207

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