CVE-2018-18557

Publication date 22 October 2018

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

8.8 · High

Score breakdown

Description

LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0beta7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 (with JBIG enabled) decodes arbitrarily-sized JBIG into a buffer, ignoring the buffer size, which leads to a tif_jbig.c JBIGDecode out-of-bounds write.

Status

Package Ubuntu Release Status
tiff 18.10 cosmic
Fixed 4.0.9-6ubuntu0.1
18.04 LTS bionic
Fixed 4.0.9-5ubuntu0.1
16.04 LTS xenial
Fixed 4.0.6-1ubuntu0.5
14.04 LTS trusty
Fixed 4.0.3-7ubuntu0.10

Patch details

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

Package Patch details
tiff

Severity score breakdown

Parameter Value
Base score 8.8 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3864-1
    • LibTIFF vulnerabilities
    • 22 January 2019
    • USN-3906-2
    • LibTIFF vulnerabilities
    • 18 March 2019

Other references