high
7.5
CWE
20 125
Advisory Published
Updated

CVE-2017-9050: Input Validation

First published: Thu 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.

Credit: Mateusz Jurczyk (j00ru) Google Project ZeroMateusz Jurczyk (j00ru) Google Project ZeroMateusz Jurczyk (j00ru) Google Project ZeroMateusz Jurczyk (j00ru) Google Project ZeroMateusz Jurczyk (j00ru) Google Project ZeroMateusz Jurczyk (j00ru) Google Project ZeroMateusz Jurczyk (j00ru) Google Project Zero cve@mitre.org

Affected SoftwareAffected VersionHow to fix
debian/libxml2
2.9.4+dfsg1-7+deb10u4
2.9.4+dfsg1-7+deb10u6
2.9.10+dfsg-6.7+deb11u4
2.9.14+dfsg-1.3~deb12u1
2.9.14+dfsg-1.3
Xmlsoft Libxml2=2.9.4
Apple iCloud for Windows<7.0
7.0
Apple iTunes for Windows<12.7
12.7
debian/libxml2<=2.9.4+dfsg1-2.2<=2.9.1+dfsg1-5
2.9.4+dfsg1-3.1
2.9.4+dfsg1-2.2+deb9u1
2.9.1+dfsg1-5+deb8u5
Apple watchOS<4
4
Apple tvOS<11
11
Apple iOS<11
11
Apple macOS<10.13
10.13
Apple macOS<10.13.1
10.13.1
Apple Sierra
Apple El Capitan

Remedy

http://www.openwall.com/lists/oss-security/2017/05/15/1

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2017-9050?

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

  • 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.

  • What is the severity of CVE-2017-9050?

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

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

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

  • 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).

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