CVE-2020-15503 Information

Description

LibRaw before 0.20-RC1 lacks a thumbnail size range check. This affects decoders/unpack_thumb.cpp postprocessing/mem_image.cpp and utils/thumb_utils.cpp. For example malloc(sizeof(libraw_processed_image_t)+T.tlength) occurs without validating T.tlength.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00075.html http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00001.html https://github.com/LibRaw/LibRaw/commit/20ad21c0d87ca80217aee47533d91e633ce1864d https://github.com/LibRaw/LibRaw/compare/0.20-Beta3…0.20-RC1 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7HM2DS6HA4YZREI3BYGS75M6D76WMW62/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CSXAJKZ4VNDYVQULJNY4XDPWHIJDTB4P/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DNGDWTO45TU4KGND75EUUEGUMNSOYC7H/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QCVKD7PTO7UQAVUTBHJAKBKYLPQQGAMZ/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y34ALB34P3NGQXLF7BG7R6DGRX6XL2JN/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZETDVPZQWZWVGIG6JTIEKP5KPVMUE7Y/ https://www.libraw.org/news/libraw-0-20-rc1

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5