CVE-2017-9050: Input Validation

Published May 18, 2017
·
Updated

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839.

Other sources

libxml2. A memory corruption issue was addressed with improved input validation.

Credit

Mateusz Jurczyk (j00ru)(Google Project Zero), Mateusz Jurczyk (j00ru)(Google Project Zero), Mateusz Jurczyk (j00ru)(Google Project Zero), Mateusz Jurczyk (j00ru)(Google Project Zero), Mateusz Jurczyk (j00ru)(Google Project Zero), Mateusz Jurczyk (j00ru)(Google Project Zero), Mateusz Jurczyk (j00ru)(Google Project Zero)

Affected Software

12 affected componentsFixes available
debian/libxml2
2.9.4+dfsg1-7+deb10u42.9.4+dfsg1-7+deb10u62.9.10+dfsg-6.7+deb11u42.9.14+dfsg-1.3~deb12u12.9.14+dfsg-1.3
debian/libxml2<=2.9.4+dfsg1-2.2, <=2.9.1+dfsg1-5
2.9.4+dfsg1-3.12.9.4+dfsg1-2.2+deb9u12.9.1+dfsg1-5+deb8u5
Apple tvOS<11
11
Apple macOS High Sierra<10.13
10.13
Apple macOS High Sierra<10.13.1
10.13.1
Apple Sierra
Apple El Capitan
Apple WatchOS<4
4
Apple iCloud for Windows<7.0
7.0
Xmlsoft Libxml2=2.9.4
Apple iTunes for Windows<12.7
12.7
Apple iOS<11
11

Event History

May 18, 2017
CVE Published
via MITRE·06:13 AM
Data Sourced
via MITRE·06:13 AM
Description
Data Sourced
via NVD·06:29 AM
RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is CVE-2017-9050?

CVE-2017-9050 is a memory corruption vulnerability in libxml2.

2

How does CVE-2017-9050 affect libxml2?

CVE-2017-9050 can cause programs that use libxml2 to crash due to a heap-based buffer over-read vulnerability.

3

What is the severity of CVE-2017-9050?

CVE-2017-9050 has a severity rating of 7.5 (high).

4

What is the recommended remedy for CVE-2017-9050?

To fix CVE-2017-9050, update libxml2 to version 2.9.4 or later.

5

Where can I find more information about CVE-2017-9050?

You can find more information about CVE-2017-9050 at the following references: [Reference 1](https://support.apple.com/en-us/HT208113), [Reference 2](https://support.apple.com/en-us/HT208112), [Reference 3](https://bugzilla.gnome.org/show_bug.cgi?id=781361).

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203