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CVE
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CVE-2003-1564Date: (C)2003-12-31   (M)2018-02-19


libxml2, possibly before 2.5.0, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, aka the "billion laughs attack."

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : CVSS Score : 9.3
Exploit Score: Exploit Score: 8.6
Impact Score: Impact Score: 10.0
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: Access Vector: NETWORK
Attack Complexity: Access Complexity: MEDIUM
Privileges Required: Authentication: NONE
User Interaction: Confidentiality: COMPLETE
Scope: Integrity: COMPLETE
Confidentiality: Availability: COMPLETE
Integrity:  
Availability:  
  
Reference:
SECUNIA-31868
RHSA-2008:0886
http://www.stylusstudio.com/xmldev/200302/post20020.html
http://mail.gnome.org/archives/xml/2008-August/msg00034.html
http://www.reddit.com/r/programming/comments/65843/time_to_upgrade_libxml2
http://xmlsoft.org/news.html

CPE    80
cpe:/a:xmlsoft:libxml2:1.7.0
cpe:/a:xmlsoft:libxml2:1.7.4
cpe:/a:xmlsoft:libxml2:1.7.3
cpe:/a:xmlsoft:libxml2:2.4.10
...
CWE    1
CWE-189

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