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CVE-2017-5899

Published: 27 March 2017

Directory traversal vulnerability in the setuid root helper binary in S-nail (later S-mailx) before 14.8.16 allows local users to write to arbitrary files and consequently gain root privileges via a .. (dot dot) in the randstr argument.

From the Ubuntu Security Team

It was discovered that S-nail incorrectly handled paths. An attacker could possible use this issue to write arbitrary files and escalate privileges.

Priority

High

Cvss 3 Severity Score

7.0

Score breakdown

Status

Package Release Status
s-nail
Launchpad, Ubuntu, Debian
artful Not vulnerable
(14.8.16-1)
bionic Not vulnerable
(14.8.16-1)
cosmic Not vulnerable
(14.8.16-1)
disco Not vulnerable
(14.8.16-1)
eoan Not vulnerable
(14.8.16-1)
focal Not vulnerable
(14.8.16-1)
groovy Not vulnerable
(14.8.16-1)
hirsute Not vulnerable
(14.8.16-1)
impish Not vulnerable
(14.8.16-1)
jammy Not vulnerable
(14.8.16-1)
precise Does not exist

trusty Does not exist

upstream
Released (14.8.16-1)
xenial
Released (14.8.6-1ubuntu0.1~esm1)
Available with Ubuntu Pro
yakkety Ignored
(end of life)
zesty Not vulnerable
(14.8.16-1)

Severity score breakdown

Parameter Value
Base score 7.0
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H