Libtiff 4.0.3 Integer Overflow

2014-12-24 / 2015-04-12
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-189


Ogólna skala CVSS: 5/10
Znaczenie: 2.9/10
Łatwość wykorzystania: 10/10
Wymagany dostęp: Zdalny
Złożoność ataku: Niska
Autoryzacja: Nie wymagana
Wpływ na poufność: Brak
Wpływ na integralność: Brak
Wpływ na dostępność: Częściowy

---------- Background ---------- Libtiff provides support for the Tag Image File Format (TIFF), a widely used format for storing image data. ---------------- Software Version ---------------- All tests were performed using libtiff 4.0.3 ----------- Description ----------- Fuzzing bmp2tiff, using the afl-fuzzer, revealed an integer overflow issue related to the dimensions of the input BMP image. The issue resulted in an out-of-bounds memory read which causes the application to crash. Details can be found at http://bugzilla.maptools.org/show_bug.cgi?id=2494. -------- Timeline -------- 2014-12-09 Discovery reported to libtiff bug tracker 2014-12-21 Issue was fixed 2014-12-22 Public Disclosure ------- Credits ------- Reported by Paris Zoumpouloglou of Project Zero labs -- Project Zero Labs @projectzerolabs https://www.projectzero.gr


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