CVE-2017-7376

Publication date 21 June 2017

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

Description

Buffer overflow in libxml2 allows remote attackers to execute arbitrary code by leveraging an incorrect limit for port values when handling redirects.

Read the notes from the security team

Status

Package Ubuntu Release Status
libxml2 17.04 zesty
Fixed 2.9.4+dfsg1-2.2ubuntu0.1
16.10 yakkety Ignored end of life
16.04 LTS xenial
Fixed 2.9.3+dfsg1-1ubuntu0.3
14.04 LTS trusty
Fixed 2.9.1+dfsg1-3ubuntu4.10

Notes

seth-arnold

Debian’s triage said the fix isn’t complete

Patch details

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

Package Patch details
libxml2

Severity score breakdown

Parameter Value
Base score 9.8 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3424-1
    • libxml2 vulnerabilities
    • 19 September 2017
    • USN-3424-2
    • libxml2 vulnerabilities
    • 10 October 2017

Other references