CVE-2017-6887

Description

A boundary error within the "parse_tiff_ifd()" function (internal/dcraw_common.cpp) in LibRaw versions before 0.18.2 can be exploited to cause a memory corruption via e.g. a specially crafted KDC file with model set to "DSLR-A100" and containing multiple sequences of 0x100 and 0x14A TAGs.

CVSS Metrics

• v3.0•HIGH•Score: 7.8CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
• v2.0•MEDIUM•Score: 6.8AV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.47%• Percentile: 65%

Techniques & Countermeasures

• CWE-119•Improper Restriction of Operations within the Bounds of a Memory Buffer

  The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Affected Systems

• libraw•libraw

  ≤ 0.18.1 | 0.x prior to 0.18.2

References (5)

• http://www.securityfocus.com/bid/98592
• https://secuniaresearch.flexerasoftware.com/secunia_research/2017-6/
• https://secuniaresearch.flexerasoftware.com/advisories/75737/
• http://www.debian.org/security/2017/dsa-3950
• https://github.com/LibRaw/LibRaw/commit/d7c3d2cb460be10a3ea7b32e9443a83c243b2251