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+IRSSI-SA-2018-01 Irssi Security Advisory [1]
+============================================
+CVE-2018-5206, CVE-2018-5205, CVE-2018-5208, CVE-2018-5207
+
+Description
+-----------
+
+Multiple vulnerabilities have been located in Irssi.
+
+(a) When the channel topic is set without specifying a sender, Irssi
+    may dereference NULL pointer. Found by Joseph Bisch. (CWE-476)
+
+    CVE-2018-5206 was assigned to this issue.
+
+(b) When using incomplete escape codes, Irssi may access data beyond
+    the end of the string. (CWE-126) Found by Joseph Bisch.
+
+    CVE-2018-5205 was assigned to this issue.
+
+(c) A calculation error in the completion code could cause a heap
+    buffer overflow when completing certain strings. (CWE-126) Found
+    by Joseph Bisch.
+
+    CVE-2018-5208 was assigned to this issue.
+
+(d) When using an incomplete variable argument, Irssi may access data
+    beyond the end of the string. (CWE-126) Found by Joseph Bisch.
+
+    CVE-2018-5207 was assigned to this issue.
+
+
+Impact
+------
+
+May affect the stability of Irssi.
+
+
+Affected versions
+-----------------
+
+(a,b,c,d) All Irssi versions that we observed.
+
+
+Fixed in
+--------
+
+Irssi 1.0.6
+
+
+Recommended action
+------------------
+
+Upgrade to Irssi 1.0.6. Irssi 1.0.6 is a maintenance release in the
+1.0 series, without any new features.
+
+After installing the updated packages, one can issue the /upgrade
+command to load the new binary. TLS connections will require
+/reconnect.
+
+
+Mitigating facts
+----------------
+
+(a) requires a broken ircd or control over the ircd
+
+(b,d) requires user to install malicious or broken files or enter
+      affected commands
+
+
+Patch
+-----
+https://github.com/irssi/irssi/releases/download/1.0.6/irssi-1.0.5_1.0.6.diff
+
+
+References
+----------
+
+[1] https://irssi.org/security/irssi_sa_2018_01.txt