CVE-2015-7758

Publication date 8 January 2016

Last updated 22 May 2026

Ubuntu priority

Cvss 3 Severity Score

Description

Gummi 0.6.5 allows local users to write to arbitrary files via a symlink attack on a temporary dot file that uses the name of an existing file and a (1) .aux, (2) .log, (3) .out, (4) .pdf, or (5) .toc extension for the file name, as demonstrated by .thesis.tex.aux.

From the Ubuntu Security Team

It was discovered that Gummi created unsafe, predictable filenames in /tmp, resulting in a race condition. An attacker could use this vulnerability to overwrite arbitrary files.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
gummi	18.10 cosmic	Not affected
	18.04 LTS bionic	Not affected
	17.10 artful	Ignored end of life
	17.04 zesty	Ignored end of life
	16.10 yakkety	Ignored end of life
	16.04 LTS xenial	Not affected
	15.10 wily	Ignored end of life
	15.04 vivid	Ignored end of life
	14.04 LTS trusty	Fixed 0.6.5-3+deb8u2build0.14.04.1
	12.04 LTS precise	Ignored end of life

Severity score breakdown

CVSS version: CVSS v3.0

Base score 3.3 · Low

Base metrics

Parameter	Value
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality impact	None
Integrity impact	Low
Availability impact	None

Scores

Parameter	Value
Base score	3.3 · Low
Exploitability score	-
Impact score	-

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