CVE-2017-9233

Public Exploit

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.20%
Vendor Advisory debian.org Vendor Advisory github.io
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://support.apple.com/HT208144 third party advisory
https://libexpat.github.io/doc/cve-2017-9233/ exploit technical description vendor advisory
https://github.com/libexpat/libexpat/blob/master/expat/Changes third party advisory release notes
http://www.securitytracker.com/id/1039427 vdb entry third party advisory
https://support.apple.com/HT208113 third party advisory
https://support.apple.com/HT208112 third party advisory
https://support.apple.com/HT208115 third party advisory
http://www.debian.org/security/2017/dsa-3898 third party advisory vendor advisory
http://www.securityfocus.com/bid/99276 vdb entry third party advisory
http://www.openwall.com/lists/oss-security/2017/06/17/7 vdb entry mailing list
https://support.f5.com/csp/article/K03244804 third party advisory
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E mailing list
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E mailing list

Frequently Asked Questions

What is the severity of CVE-2017-9233?
CVE-2017-9233 has been scored as a high severity vulnerability.
How to fix CVE-2017-9233?
To fix CVE-2017-9233, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-9233 being actively exploited in the wild?
It is possible that CVE-2017-9233 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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