CVE-2017-7544

Publication date 21 September 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

libexif through 0.6.21 is vulnerable to out-of-bounds heap read vulnerability in exif_data_save_data_entry function in libexif/exif-data.c caused by improper length computation of the allocated data of an ExifMnote entry which can cause denial-of-service or possibly information disclosure.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libexif	19.10 eoan	Not affected
	19.04 disco	Not affected
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Not affected
	17.10 artful	Ignored end of life
	17.04 zesty	Ignored end of life
	16.04 LTS xenial	Fixed 0.6.21-2ubuntu0.1
	14.04 LTS trusty	Fixed 0.6.21-1ubuntu1+esm1

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
libexif	Upstream: http://libexif.cvs.sourceforge.net/viewvc/libexif/libexif/libexif/exif-data.c?r1=1.131&r2=1.132

Severity score breakdown

Parameter	Value
Base score	9.1 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H