Executive Summary

Summary
Title expat security update
Informations
Name DSA-4530 First vendor Publication 2019-09-22
Vendor Debian Last vendor Modification 2019-09-22
Severity (Vendor) N/A Revision 1

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

It was discovered that Expat, an XML parsing C library, did not properly handled internal entities closing the doctype, potentially resulting in denial of service or information disclosure if a malformed XML file is processed.

For the oldstable distribution (stretch), this problem has been fixed in version 2.2.0-2+deb9u3.

For the stable distribution (buster), this problem has been fixed in version 2.2.6-2+deb10u1.

We recommend that you upgrade your expat packages.

For the detailed security status of expat please refer to its security tracker page at: https://security-tracker.debian.org/tracker/expat

Original Source

Url : http://www.debian.org/security/2019/dsa-4530

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-776 Unrestricted Recursive Entity References in DTDs ('XML Bomb')
50 % CWE-125 Out-of-bounds Read

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 12
Application 290

Snort® IPS/IDS

Date Description
2019-12-17 libexpat internal entity heap over-read attempt
RuleID : 52254 - Revision : 1 - Type : FILE-OTHER
2019-12-17 libexpat internal entity heap over-read attempt
RuleID : 52253 - Revision : 1 - Type : FILE-OTHER

Alert History

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Date Informations
2019-09-22 13:18:58
  • First insertion