CVE-2013-0340Suited to automated attack · CISA

Vulnerability in Red Hat Libexpat

CVSS score

6.8

EPSS probability

%19.4

Risk score

1.3

Published

12 y ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

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Vulnerability description

DayBreach CVE AI Research

CVE-2013-0340 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

expat before version 2.4.0 does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2013-0340 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	redhat	libexpat	View
2	libexpat project	libexpat	View
3	python	python	View
4	python	python	View
5	python	python	View
6	python	python	View
7	apple	ipados	View
8	apple	iphone os	View
9	apple	macos	View
10	apple	tvos	View
11	apple	watchos	View

Total affected vendors: 4|Products: 11

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
6.8	CVSS V2	—	AV:N/AC:M/Au:N/C:P/I:P/A:P	NVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

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Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2013-0340 is associated with the following CWEs:

CWE-611: Common Weakness Enumeration Entry CWE-611

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2013-0340 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

Permissions—

User—

Official Sources and Advisories

[oss-security] 20130221 CVEs for libxml2 and expat internal and external XML entity expansionvendor-advisory [oss-security] 20130413 Re-evaluating expat/libxml2 CVE assignmentsvendor-advisory 90634vendor-advisory 1028213vendor-advisory GLSA-201701-21vendor-advisory 58233vendor-advisory https://support.apple.com/kb/HT212805vendor-advisory https://support.apple.com/kb/HT212804vendor-advisory https://support.apple.com/kb/HT212807vendor-advisory https://support.apple.com/kb/HT212819vendor-advisory

CVSS Vector Radar Chart

6.8 / 10

Vulnerability Scoring Details

AV:N/AC:M/Au:N/C:P/I:P/A:P

Attack VectorNetwork

Attack Complexity—

Privileges Required—

User Interaction—

Confidentiality (Gizlilik)P

Integrity (Bütünlük)P

Availability (Erişilebilirlik)P

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

Weakness Type (CWE & CAPEC)

CWE-611

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