FreeBSD : py-pillow -- Buffer overflow in TIFF decoding code (53252879-cf11-11e5-805c-5453ed2e2b49)

medium Nessus Plugin ID 88669

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The Pillow maintainers report :

Pillow 3.1.0 and earlier when linked against libtiff >= 4.0.0 on x64 may overflow a buffer when reading a specially crafted tiff file.

Specifically, libtiff >= 4.0.0 changed the return type of TIFFScanlineSize from int32 to machine dependent int32|64. If the scanline is sized so that it overflows an int32, it may be interpreted as a negative number, which will then pass the size check in TiffDecode.c line 236. To do this, the logical scanline size has to be > 2gb, and for the test file, the allocated buffer size is 64k against a roughly 4gb scan line size. Any image data over 64k is written over the heap, causing a segfault.

This issue was found by security researcher FourOne.

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 88669

File Name: freebsd_pkg_53252879cf1111e5805c5453ed2e2b49.nasl

Version: 2.5

Type: local

Family: FreeBSD Local Security Checks

Published: 2/10/2016

Updated: 1/4/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:py27-pillow, p-cpe:/a:freebsd:freebsd:py33-pillow, p-cpe:/a:freebsd:freebsd:py34-pillow, p-cpe:/a:freebsd:freebsd:py35-pillow, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 2/9/2016

Vulnerability Publication Date: 2/4/2016

Reference Information

CVE: CVE-2016-0740

Detections

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