====================================================================== Secunia Research 2018/12/13 libexif EXIF_IFD_INTEROPERABILITY / EXIF_IFD_EXIF Denial of Service Vulnerability ====================================================================== Table of Contents Affected Software....................................................1 Severity.............................................................2 Description of Vulnerability.........................................3 Solution.............................................................4 Time Table...........................................................5 Credits..............................................................6 References...........................................................7 About Flexera........................................................8 Verification.........................................................9 ====================================================================== 1) Affected Software * libexif version 0.6.21. Other versions may also be affected. ====================================================================== 2) Severity Rating: Moderately critical Impact: Denial of Service Where: From remote ====================================================================== 3) Description of Vulnerability Secunia Research has discovered a vulnerability in libexif, which can be exploited by malicious people to cause a DoS (Denial of Service). 1) An error when processing the EXIF_IFD_INTEROPERABILITY and EXIF_IFD_EXIF tags can be exploited to exhaust available CPU resources. The vulnerability is confirmed in version 0.6.21. Other versions may also be affected. ====================================================================== 4) Solution No official solution is currently available. ====================================================================== 5) Time Table 2018/09/12 - Maintainer contacted with the vulnerability details. 2018/09/27 - Maintainer contacted for a follow-up. 2018/09/28 - Maintainer confirmed the vulnerability. 2018/11/13 - Maintainer contacted for a follow-up highlighting disclosure policy margins. 2018/12/12 - Release of Secunia Advisory SA84652 based on the disclosure policy. 2018/12/13 - Public disclosure of Secunia Research Advisory. ====================================================================== 6) Credits Laurent Delosieres, Secunia Research at Flexera. ====================================================================== 7) References The Common Vulnerabilities and Exposures (CVE) project has assigned the CVE-2018-20030 identifier for the vulnerability. ====================================================================== 8) About Flexera Flexera helps application producers and enterprises increase application usage and the value they derive from their software. http://www.flexera.com Flexera delivers market-leading Software Vulnerability Management solutions enabling enterprises to proactively identify and remediate software vulnerabilities, effectively reducing the risk of costly security breaches. https://www.flexera.com/products/software-vulnerability-management Flexera supports and contributes to the community in several ways. We have always believed that reliable vulnerability intelligence and tools to aid identifying and fixing vulnerabilities should be freely available for consumers to ensure that users, who care about their online privacy and security, can stay secure. Only a few vendors address vulnerabilities in a proper way and help users get updated and stay secure. End-users (whether private individuals or businesses) are otherwise left largely alone, and that is why back in 2002, Secunia Research started investigating, coordinating disclosure and verifying software vulnerabilities. In 2016, Secunia Research became a part of Flexera and today our in-house software vulnerability research remains the core of the Software Vulnerability Management products at Flexera. https://www.flexera.com/company/secunia-research/ The public Secunia Advisory database contains information for researchers, security enthusiasts, and consumers to lookup individual products and vulnerabilities and assess, whether they need to take any actions to secure their systems or whether a given vulnerability has already been discovered. https://www.flexera.com/company/secunia-research/advisories/ ====================================================================== 9) Verification Please verify this advisory by visiting the website: https://secuniaresearch.flexerasoftware.com/secunia_research/2018-28/ Complete list of vulnerability reports published by Secunia Research: https://www.flexera.com/company/secunia-research/advisories/ ======================================================================