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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.1954 LibTIFF vulnerabilities 8 August 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libtiff Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-5225 CVE-2016-3945 Reference: ESB-2017.1103 ESB-2017.0534.2 ESB-2017.0114 ESB-2016.1873 Original Bulletin: http://www.ubuntu.com/usn/usn-3212-4 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3212-4 August 07, 2017 tiff vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 12.04 ESM Summary: LibTIFF could be made to crash or run programs as your login if it opened a specially crafted file. Software Description: - - tiff: Tag Image File Format (TIFF) library Details: USN-3212-1 fixed several issues in LibTIFF. This update provides a subset of corresponding update for Ubuntu 12.04 ESM. Mei Wang discovered a multiple integer overflows in LibTIFF which allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted TIFF image, which triggers an out-of-bounds write. (CVE-2016-3945) It was discovered that LibTIFF is vulnerable to a heap buffer overflow in the resulting in DoS or code execution via a crafted BitsPerSample value. (CVE-2017-5225) Original advisory details: - - It was discovered that LibTIFF incorrectly handled certain malformed - - images. If a user or automated system were tricked into opening a - - specially crafted image, a remote attacker could crash the - - application, leading to a denial of service, or possibly execute - - arbitrary code with user privileges. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM: - - libtiff-tools 3.9.5-2ubuntu1.11 - - libtiff4 3.9.5-2ubuntu1.11 In general, a standard system update will make all the necessary changes. References: - - https://www.ubuntu.com/usn/usn-3212-4 - - https://www.ubuntu.com/usn/usn-3212-1 - - CVE-2016-3945, CVE-2017-5225 - --------------------------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. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. 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 iQIVAwUBWYkdBYx+lLeg9Ub1AQhmfg/+N8bi7bUFgsCdkPysYFMibgoWUQo4SBdI MEuRX6/rXPzRTZ6aixxmLD//ZijptNjll8RMEzbgiYsLXUxuCGHZNeZkJALgTg6S vLxgNWG43pSdSTeW/RRu4Q1laoCwxSHf/LIMrO6PTYlN/V+/cz/vHcAvi+SXRkVU tqn4kScXMLEG/g3LFb8q2QfCHyYCi641YpbA5U/Kb8wVjow74+zuU8vfDNeoRJEi OnxuLS+BS6dEh7CdML1uS5rioSx9V7JEGgN45zQGfrCxehvVh1vg+4SqOw/hqwmn Gc6P2s52ccm46Wi2hbRhKaTJKSdFZBJC4CCBFR3K9anqivwDfAPHRG/Y8vr0wmqf Z+EnMu5H+OZNHqtJQDRvHtPaAMPIU8BYfGIknXBSaJB0vRrOtJp0w1LyG58L+2bA QJ4wshBhP9mccqbBfVWyiJgY/mYFvJCGpeN+iZM9yeQAOHNektEnt3+TS1t0isP3 8uCdNMHE3yaNBpUf5VhFLMZ3TsABq0ZYIBSvk+JfQmYjnly1M5Qi2vENLp+1QZUV H9c0TzwHCa9UFWLy1TX5Zex/TSVLJb62aFLHymgpOnN1pCjUzEOeHHrEMmtXMmAO PDM1g0MPyaoHY833jlq9G1k2ehfWacXCUoD+7+FM3YRyY13hK9SySttiKnHp6+0k as9GsGhd1ZM= =KYKC -----END PGP SIGNATURE-----