Summary
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)
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 14.04 LTS 14.04:LTS | irssi | 0.8.15-5ubuntu3.4 |
| Ubuntu · 16.04 LTS 16.04:LTS | irssi | 0.8.19-1ubuntu1.6 |
Vulnerabilities 4
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Unscored —
When using incomplete escape codes, Irssi before 1.0.6 may access data beyond the end of the string.
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Unscored —
When the channel topic is set without specifying a sender, Irssi before 1.0.6 may dereference a NULL pointer.
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Unscored —
When using an incomplete variable argument, Irssi before 1.0.6 may access data beyond the end of the string.
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Unscored —
In Irssi before 1.0.6, a calculation error in the completion code could cause a heap buffer overflow when completing ce…