CVE-2017-9233: XEE

Published Jul 25, 2017
·
Updated

libexpat. Multiple issues were addressed by updating to version 2.2.1

Other sources

XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.

Credit

CVE-2016-9063, CVE-2017-9233

Affected Software

14 affected componentsFixes available
debian/expat
2.2.6-2+deb10u42.2.6-2+deb10u62.2.10-2+deb11u52.5.0-12.5.0-2
Apple tvOS<11
11
Apple macOS High Sierra<10.13
10.13
Apple WatchOS<4
4
Apple iOS<11
11
Libexpat Project Libexpat<=2.2.0
Python Python>=2.7.0<2.7.15
Python Python>=3.3.0<3.3.7
Python Python>=3.4.0<3.4.7
Python Python>=3.5.0<3.5.4
Python Python>=3.6.0<3.6.2
Debian Debian Linux=8.0
Debian Debian Linux=9.0
Debian Debian Linux=10.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/expat to a version that resolves this vulnerability.

    Fixed in 2.2.6-2+deb10u4Fixed in 2.2.6-2+deb10u6Fixed in 2.2.10-2+deb11u5Fixed in 2.5.0-1Fixed in 2.5.0-2
  2. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 11
  3. Upgrade

    Upgrade macOS High Sierra to a version that resolves this vulnerability.

    Fixed in 10.13
  4. Upgrade

    Upgrade Apple iOS, iPadOS, and watchOS to a version that resolves this vulnerability.

    Fixed in 4
  5. Upgrade

    Upgrade Apple iOS and iPadOS to a version that resolves this vulnerability.

    Fixed in 11
  6. Upgrade

    Upgrade libexpat to a version that resolves this vulnerability.

    Fixed in 2.2.1

Event History

Jul 25, 2017
CVE Published
via MITRE·08:00 PM
Data Sourced
via MITRE·08:00 PM
Description
Data Sourced
via NVD·08:29 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is CVE-2017-9233?

CVE-2017-9233 is an XML External Entity vulnerability in libexpat 2.2.0 and earlier.

2

What is the severity of CVE-2017-9233?

CVE-2017-9233 has a severity of high (7.5).

3

How does CVE-2017-9233 affect libexpat?

CVE-2017-9233 allows attackers to put the libexpat parser in an infinite loop using a malformed external entity definition from an external DTD.

4

How can I fix CVE-2017-9233 in libexpat on Debian?

You can fix CVE-2017-9233 in libexpat on Debian by updating to version 2.2.6-2+deb10u4, 2.2.6-2+deb10u6, 2.2.10-2+deb11u5, 2.5.0-1, or 2.5.0-2.

5

What are the affected versions of Python for CVE-2017-9233?

Python versions 2.7.0 to 2.7.15, 3.3.0 to 3.3.7, 3.4.0 to 3.4.7, 3.5.0 to 3.5.4, and 3.6.0 to 3.6.2 are affected by CVE-2017-9233.

Company

Resources

Contact

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