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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.0310 Irssi vulnerabilities 2 February 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: irssi Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Access Confidential Data -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-5356 CVE-2017-5196 CVE-2017-5195 CVE-2017-5194 CVE-2017-5193 CVE-2016-7553 Original Bulletin: http://www.ubuntu.com/usn/usn-3184-1 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3184-1 February 01, 2017 irssi vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 16.10 - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS - - Ubuntu 12.04 LTS Summary: Several security issues were fixed in Irssi. Software Description: - - irssi: terminal based IRC client Details: It was discovered that the Irssi buf.pl script set incorrect permissions. A local attacker could use this issue to retrieve another user's window contents. (CVE-2016-7553) Joseph Bisch discovered that Irssi incorrectly handled comparing nicks. A remote attacker could use this issue to cause Irssi to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-5193) It was discovered that Irssi incorrectly handled invalid nick messages. A remote attacker could use this issue to cause Irssi to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-5194) Joseph Bisch discovered that Irssi incorrectly handled certain incomplete control codes. A remote attacker could use this issue to cause Irssi to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2017-5195) Hanno Bock and Joseph Bisch discovered that Irssi incorrectly handled certain incomplete character sequences. A remote attacker could use this issue to cause Irssi to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2017-5196) Hanno Bock discovered that Irssi incorrectly handled certain format strings. A remote attacker could use this issue to cause Irssi to crash, resulting in a denial of service. (CVE-2017-5356) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.10: irssi 0.8.19-1ubuntu2.1 Ubuntu 16.04 LTS: irssi 0.8.19-1ubuntu1.3 Ubuntu 14.04 LTS: irssi 0.8.15-5ubuntu3.1 Ubuntu 12.04 LTS: irssi 0.8.15-4ubuntu3.1 After a standard system update you need to restart Irssi to make all the necessary changes. References: http://www.ubuntu.com/usn/usn-3184-1 CVE-2016-7553, CVE-2017-5193, CVE-2017-5194, CVE-2017-5195, CVE-2017-5196, CVE-2017-5356 Package Information: https://launchpad.net/ubuntu/+source/irssi/0.8.19-1ubuntu2.1 https://launchpad.net/ubuntu/+source/irssi/0.8.19-1ubuntu1.3 https://launchpad.net/ubuntu/+source/irssi/0.8.15-5ubuntu3.1 https://launchpad.net/ubuntu/+source/irssi/0.8.15-4ubuntu3.1 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWJK5n4x+lLeg9Ub1AQhD/g/9EYDFLZpOjC02eg5MPyc+CAINeaNyx8B3 lkWVFJ/gMSpTbxC6rLRmhea2M0fSV1UfjR96+LGO53NqueR9l1qEHnh98K5mHBrp 9RnnZshFV55x+hxeiZGUpuuHKTCUP4k+sYoBa1ZMjbNtqLtX3rakUFA/HUGnlUkZ N2JUxkAZ36OFrvnAyox8Gg6jKBUfHuTvggbRtStm/ZNqXn3HU3XR3s6AC+I/gFF1 3R+Aq9Xr1/mBwIAmJ+wdYIvD2Yx4B5X1s+xxU22q7OFhe+nQgoOy2r9LlXrIceZE 96gla/Pr9JsrERo7B+HxDn3r2Dq5DhIlXN6G97Eadvt1m7ODDyU4xyHszd3mmdBt uLmZQa/ew8PhL4oVF9HVex5o9z5p4oo1LtfQzgsFWkXiJUhVUv0YOun+WlIHz5sF mw4afYAol3Hktkrivza6fyotbMOApm6pW8oOKD6FpppMvTI0t6vIKv+XLj9Gov0I oIl8S5UWqsLl4R1FgOcPrawPs3zHN0AMCJNnFBKbcbjM4/5J8SgxZRYcgEDpsBEL mHvyRjk1Tqo1Vn0AU1CyZ7SPy5UzSCmAGcCXhOsu1w/UgP6pRBsr06u3qMuuqPEB 7oAcL1IMVpliVFBd+t3CNQvyR/l7D0KmT8RT3Qp2U+VrO/QuiGqrVMjPg+JQ0BWt s/aal5pVvnw= =KPIO -----END PGP SIGNATURE-----