CVE-2009-1959

Off-by-one error in the event_wallops function in fe-common/irc/fe-events.c in irssi 0.8.13 allows remote IRC servers to cause a denial of service (crash) via an empty command, which triggers a one-byte buffer under-read and a one-byte buffer underflow.

• CWE-189

• http://bugs.irssi.org/index.php?do=details&task_id=662Exploit, Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
• http://secunia.com/advisories/35685
• http://secunia.com/advisories/35812
• http://secunia.com/advisories/36152
• http://www.irssi.org/ChangeLogExploit, Vendor Advisory
• http://www.mandriva.com/security/advisories?name=MDVSA-2009:133
• http://www.openwall.com/lists/oss-security/2009/05/29/3
• http://www.securityfocus.com/bid/35399
• http://www.securitytracker.com/id?1022410
• http://www.ubuntu.com/usn/usn-800-1
• http://www.vupen.com/english/advisories/2009/1596
• http://xorl.wordpress.com/2009/05/28/irssi-event_wallops-off-by-one-readwrite/Exploit
• https://exchange.xforce.ibmcloud.com/vulnerabilities/51184
• https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00146.html
• http://bugs.irssi.org/index.php?do=details&task_id=662Exploit, Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
• http://secunia.com/advisories/35685
• http://secunia.com/advisories/35812
• http://secunia.com/advisories/36152
• http://www.irssi.org/ChangeLogExploit, Vendor Advisory
• http://www.mandriva.com/security/advisories?name=MDVSA-2009:133
• http://www.openwall.com/lists/oss-security/2009/05/29/3
• http://www.securityfocus.com/bid/35399
• http://www.securitytracker.com/id?1022410
• http://www.ubuntu.com/usn/usn-800-1
• http://www.vupen.com/english/advisories/2009/1596
• http://xorl.wordpress.com/2009/05/28/irssi-event_wallops-off-by-one-readwrite/Exploit
• https://exchange.xforce.ibmcloud.com/vulnerabilities/51184
• https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00146.html

Published

Jun 8, 2009

Last Modified

Jun 16, 2026

Status

Modified

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